Cooper ST's on a Disco 2

[Chazb]

Hi,

Can someone tell me if a set of Cooper STs (60% road, 40% dirt & mud) will fit on my 1999 Disco 2 as follows;

Current tyres: Michelin XPC 235/70/R16
New tyres: Cooper ST 245/75/R16

I understand the basics of tyre sizes but really want to know if anyone else has this tried these Coopers and if they fit ok on standard 16" rims?

Thanks in advance,
Chazb.

[BigJon]

They will fit just fine. A friend of mine has those tyres (newly fitted) on 8 in Disco II rims, they look a touch narrow, but on 7 inch standard rims they will be fine.

[Chazb]

Thanks BigJon.

The guy at the tyre shop near my work reckoned the 245/75/R16s would rub the suspension arm under the arch - I told him the car model etc.

How do I check the rim size to be sure - or is it easier to take it into the tyre shop and show them?

[BigJon]

Most Discovery IIs came with 16x7 inch rims standard. Some (Classic Country pack) came with 16x8 inch and same (Classic City pack) came with 18 inch, although I am not sure of the width. 245/75 R16 tyres will not rub anywhere.

[Chazb]

So, with that in mind, Cooper STs in light truck spec sized at....

225/75/R16 and 245/75/R16

...would both fit to the Disco II standard 16" 7J rims. I dont understand why two tyre places I spoke to (both Cooper dealers in Melbourne) said the 245/75s wouldnt fit?

Anyway I got a letter through today from Coopers after I put my details in on their website the other day, describing what driving I would be doing, etc and they recommend the 225/75/R16s, so that has to be ok I figure.

Thanks again for your help BigJon.

[McDisco]

Chazb

The 245/75's will definitely fit and will not be a problem. I run 265/75/r16s and they dont rub, but I have a 2 inch lift.

The 245's are a good size. They dont alter the gearing too much and they fill the guards a bit better. The 235's always look a little small IMHO.

I would rethink the Coopers though. They are relatively expensive and have a history of failing. But then again I am sure plenty on this site use them without hassles. I would suggest the Pirelli AT's as they apparently wear very well, are very quite and grip well.

Angus

[dhard]

245 75 will definately fit on d2 steering stops might need adjusting. I have 245 70 16 pirelli at tyres on my d1 which has a smaller rear wheel arch do not have any issues. I had Cooper at's on b4 and was unhappy with the tread starting to chip as they got older. ST are probably slightly more aggresive all terrain tyre than the pirelli at's but unless the tracks are muddy they would perform just as good plus they are probably better on the road. Another good choice would be one of the all terrains from Mickey thomson.

[p38arover]

Another good choice would be one of the all terrains from Mickey thomson.

Aren't Mickey Thompsons made by Cooper (part of the Cooper Tire family)

Later edit:

Ahh! Here we are from the MT website:


Cooper Tire & Rubber Company's purchase of Mickey Thompson Tires in 2003 has helped to continue the company passion for innovative product design and helped to grow Mickey Thompson Performance Tires and Wheels into an industry leader with a network of thousands of dealers worldwide

[PAT303]

I couldn't be more disappointed with the coopers I had and replaced them with Pirelli A/T's and I am going to buy them again when these ones wear out. Pat

[McDisco]

Lol - would have thought at least someone would defend the Coopers....I mean someone must be buying them right?! I just find them too expensive to consider next to cheaper and better built tyres.

Angus

[p38arover]

I've got Cooper ST 245/75R16 on my P38A. I'm happy with them - although they are nearly worn out. Fortunately I have a spare set in the garage and which will soon have to go on.

[CraigE]

Chazb

The 245/75's will definitely fit and will not be a problem. I run 265/75/r16s and they dont rub, but I have a 2 inch lift.

The 245's are a good size. They dont alter the gearing too much and they fill the guards a bit better. The 235's always look a little small IMHO.

I would rethink the Coopers though. They are relatively expensive and have a history of failing. But then again I am sure plenty on this site use them without hassles. I would suggest the Pirelli AT's as they apparently wear very well, are very quite and grip well.

Angus
They do not have a recent history of failing. This was around 5-6 years ago and that type of tyre is no longer available. I have been running them for 4 years now in STT and they are great. many others I know have them in ST and STT and have had no issues. The first time I was going to buy them the dealer told me not to (8 years ago) until the issues were resolved with the current batch of ST tyres failing and informed me when they were ok again.
You do get what you pay for with most of the cheaper tyres like the Pirellis (which are a good tyre) etc getting significantly less mileage (average 50,000kms max, less on commercial vehicles like our fire vehicles and ambulances, at a mine site I worked at Dunlops, Pirellis etc were getting 20,000kms max). I have done 65,000kms on my current set of Cooper STTs and there is at least another 40,000kms left. I would considder the STT as they are good on road as well, depending on how much road driving you do. Personally I would only consider Coopers, BFG, Mickey Thompson and maybe Wranglers for medium off road work, maybe Pirelli ATs for on road (and most big name ATs). Generally it comes down to budget.

[BMKal]

Chazb

I've just had 265 x 70 R16 fitted to my Disco II. It is not lifted, and I have no problem with rubbing. I'm running the standard Landrover 8" rims. The only issue that I had was that the spare tyre carrier was too low and the spare rubbed on the bumper so that I couldn't close the rear door with the spare tyre mounted. This was easily fixed by re-drilling the carrier to raise it about an inch - also took the opportunity to make up and install a rear work light mount while I had the tyre carrier off.

[PAT303]

My scorpion A/T's have 65k on them and still have another 20k running left in them at least.The coopers last because they have deep and hard tread,when I had them my truck used to lock the back wheels and the handling went west and I spun at a set of lights at bathurst in the rain doing 40k/hr with my camper on the back.I want grip not granite. Pat

[dhard]

My scorpion A/T's have 65k on them and still have another 20k running left in them at least.The coopers last because they have deep and hard tread,when I had them my truck used to lock the back wheels and the handling went west and I spun at a set of lights at bathurst in the rain doing 40k/hr with my camper on the back.I want grip not granite. Pat

Hit nail right on the head there. They last a long time because they are hard hence not very grippy on the road. Mind you michelin tyres have the same problem in my opinion. Most tyres out there will give you good performance as long as you make sure you by the right ones for your use. What type of off road use are you using them for as if it is mainly beach work h/t or a/t are you're best bet as smoother edges help float over the sand. Aggressive tyes with edges designed for digging as in m/t style are not as good as they can dig you into the sand when what you want is to float on top. On the other hand if you're mud plugging or rock hopping every other weekend aggressive a/t such as the cooper st would be better or even a set of m/t. You then just have alter your on road driving to suit and get used to the noise. I have seen a fair amount of people recently fitting tyres from the maxiss range as they are bit cheaper. I can't comment on how good they are but sometimes price does not dictate quality.

[hiline]

My scorpion A/T's have 65k on them and still have another 20k running left in them at least.The coopers last because they have deep and hard tread,when I had them my truck used to lock the back wheels and the handling went west and I spun at a set of lights at bathurst in the rain doing 40k/hr with my camper on the back.I want grip not granite. Pat

on my 130 running A/T scorpions i got 125,000k's on them :D
and worked hard all their life

now running Cooper STT's:( but never again
they wear badly on my car, uneven tread wear and the rear tyres are starting to crack around the external lugs :eek:

[CraigE]

Hit nail right on the head there. They last a long time because they are hard hence not very grippy on the road. Mind you michelin tyres have the same problem in my opinion. Most tyres out there will give you good performance as long as you make sure you by the right ones for your use. What type of off road use are you using them for as if it is mainly beach work h/t or a/t are you're best bet as smoother edges help float over the sand. Aggressive tyes with edges designed for digging as in m/t style are not as good as they can dig you into the sand when what you want is to float on top. On the other hand if you're mud plugging or rock hopping every other weekend aggressive a/t such as the cooper st would be better or even a set of m/t. You then just have alter your on road driving to suit and get used to the noise. I have seen a fair amount of people recently fitting tyres from the maxiss range as they are bit cheaper. I can't comment on how good they are but sometimes price does not dictate quality.
MM different experiences. I find the Coopers grip well and have had no issue with them, the BFG ATs were actually worse. You do have to remember any mud tyre will not get the same road grip as an AT, hence why a lot of people run two sets of tyres. I actually find the STTs great on the beach and there has been many times where companions have had o let tyre pressures right down and we have not had to and have not chewed up the beach. The only issue I have with the Coopers is I staked one right through the tread with a bolt and their warranty is not worth a piece of cow dung.
I suppose once you have a bad experience with a product you are loath to go back. I am the same with Bridgestone Desert Duellers and any Dunlop tyre.
It all comes down to the intended use of your 4x4, personal experiences and probablly most importantlly price. Remember to shop around as often tyre retailers have a preffered supplier they can offer cheaper. I know when I got the STTs there was a price difference of $70 per tyre in the same town between 5 tyre shops. Same with BFG, Pirelli and Goodyear. The Pirelli and Hankooks are good budget road orientated tyres though.
The problem with wanting optimum grip and braking is that the tyre will have to be a soft compound and will wear a lot quicker and is often why tyres are a compromise.

[CraigE]

on my 130 running A/T scorpions i got 125,000k's on them :D
and worked hard all their life

now running Cooper STT's:( but never again
they wear badly on my car, uneven tread wear and the rear tyres are starting to crack around the external lugs :eek:
Ray,
Have you investigated why they are wearing like that??:( If it is attributable to the tyre construction then they should be replaced or given a credit on wear basis. More often than not though it is due to poor steering / suspension geometry or inflation pressures. This you would already know, but may be worth investigation with a tyre specialist or maybe the Cooper distributor. Mine have worn well. Only thing I have noted is that when you rotate the wheels and tyres are reversed road noise increases.

[hiline]

i'm not a big fan of BFG A/T's either

but we wont go there ;) nor Brigdestones or Dunlops

[hiline]

Ray,
Have you investigated why they are wearing like that??:( If it is attributable to the tyre construction then they should be replaced or given a credit on wear basis. More often than not though it is due to poor steering / suspension geometry or inflation pressures. This you would already know, but may be worth investigation with a tyre specialist or maybe the Cooper distributor. Mine have worn well. Only thing I have noted is that when you rotate the wheels and tyres are reversed road noise increases.

i can tell you i got them off a mate of mine that runs a tyre dealer;)
i got them cheap at around ($165) each:Djust as a experiment

so yes we have keep all the right pro's and cons recommended by Coopers
so once they get to the almost end of their life we'll try for a new set;)

like you said its all down personal feel and i dont feel right on them

[mrapocalypse]

I am currently running 265/70/16 ST on my D2. They don't rub, but give a 7% incorrect speedo reading. The gearing hasn't been noticeably affected.

I have a 2" lift though.

They have been really good, but now I want a bigger STT so mine are for sale. they have about 70% tread.

I'm in Brisbane and they will be pretty cheap!

0418747371

[njz]

I've had cooper STT's on my 2nd set of rims since June and had zero problems with them.

[CraigE]

I am currently running 265/70/16 ST on my D2. They don't rub, but give a 7% incorrect speedo reading. The gearing hasn't been noticeably affected.

I have a 2" lift though.

They have been really good, but now I want a bigger STT so mine are for sale. they have about 70% tread.

I'm in Brisbane and they will be pretty cheap!

0418747371
Are not 70 size tyres standard on Discos?? If so there should be no speedo error, that should only occur if you go to say 75s or 80s changing the tyre overall diameter. Something LR should be callibrating for you.
I have noticed since using GPS for speed callibration that most 4x4s have a discrepency straight off the show room floor. I think the standard from memory is + or - 5%.
The only thing that should change with these tyres is the width and this has no effect on speedo callibration.

[BigJon]

They do not have a recent history of failing.

They do in this part of the world. Cooper tyres are renowned for extreme chipping in driving conditions that pose no problems for other types of tyres.

[hiline]

sorry Chazb for getting off track :(

[harlie]

Might be able to throw some light on dealers that don’t want to fit tyres like 245/75 (or larger). Australia has laws on vehicle modifications and these still vary slightly from state to state but are basically very similar. The rules in Queensland (other states maybe vary with different sizes quoted) are very clear - you cannot increase the Total Rolling Diameter by more than 15mm over the largest tyre offered by the manufacturer on your vehicle with your braking spec. There are also points on tyre width, rim offset, rim spacers and others but diameter is what is targeted.
Disco 11 had the choice of 255/55r18 (738mm total RD) or 235/70r16 (735mm total RD). So to keep the vehicle legal the tyre choice can only be (738 +15) 753mm rolling diameter.
245/70r16 = 749 - yes
245/75r16 = 774 - no
265/70r16 = 777 - no
265/75r16 = 804 - no
255/65r16 = 738 – was this the size fitted on 8’ wheels?
This is a legal requirement designed to keep braking to manufacturers spec – the larger diameter tyre the less effective your brakes are – simple. To go over 15mm (in QLD) you are required to get a “Blue Plate” which is the modification inspection and approval process used for all vehicles operational mods including things like larger fuel tanks.

So I think you will find they don’t really know (or care) if it will fit – their book will tell them that it’s not legal, and they might be concerned that if you are involved in a fatal accident on you new taller tyres they will be receiving a visit from the coroner’s investigator to chat (and charge) the guy who fitted said tyre. It’s the Liability thing. And I know that this is happening up here – bloke next door owns a tyre dealer and won’t do it.
I know this is not going to go down well here but these are the facts – increase tyre sizes above the allowed without the Authorities inspection process and you run the risk of the insurance not playing ball, and (we all hope we never are) if you’re involved in a fatal you risk prosecution.

[harlie]

On the Coopers - I bought my td5 2nd hand about 4yrs ago and the previous owner had fitted cooper ST. Vehicle was down right dangerous in the wet, and because most of the driving (with family/kids) is around town the coopers went in the bin.

[Scouse]

Are not 70 size tyres standard on Discos?? If so there should be no speedo error, that should only occur if you go to say 75s or 80s changing the tyre overall diameter.


The only thing that should change with these tyres is the width and this has no effect on speedo callibration.The '70' is actually 70% of the width. A 265 will be a taller tyre than a 245, despite them both being 70 series tyres.

[Chazb]

Hey All,

I wasn't expecting such a good response to this thread! Obviously a lot of people have a lot of different opinions on their choice of tyre - and thanks to all of those who have expressed them and given general advice on tyres too.

I think my best bet is to get a few prices for a few different specs (and tyre vendors) and then see what the dealer says they will fit, i.e. what is legal on my Disco 2 according to them. Its gonna mean some homework and shopping around, but is going to be worthwhile if I am going to be safe and not ripped off!

Just for info if anyone is interested I am planning a "big trip" anti clockwise around the country (I have another thread running on prep for this trip) starting in April so will be doing mainly road, some beach and Cape York hopefully. So I need an a/t I figure.

Thanks again to all who have posted.

[BCC]

I bought Coopers (although I don't recall the actual spec) for my previous vehicle (Jackaroo, not a powerhouse) because I was impressed by the "Up To 80,000km" claims. When they wore out at 25,000km and I approached the folk who sold them to me, I was assured that 25,000 does indeed fit under the "Up to 80,000" claim.

Never again.

[Zute]

I had STT's on my Pajero ( I'm sure they got me a better trade in price :D ) Had no problems with them (rotated every oil change 10,000k ) Wanted 31" but tyre guy would only recommend 30" .
I'm thinking of fitting 265/70x16 ST because they don't seem to sell that size in STT.
I found the Braking and Handling OK on the STT, you had to be hooning to get out of shape. Braking, is something you really need to do an emergency test just so you know and drive with more care. ABS should help.
But they are 70% dirt 30% road and its in the dirt where they show there stuff.

[hiline]

g'day Chazb

didn't realize you were in Melb :angel:

i can give my mates details if you want a good price on tyres

and sound advice as well ..............

just send me a PM

cheers Ray

[CraigE]

The '70' is actually 70% of the width. A 265 will be a taller tyre than a 245, despite them both being 70 series tyres.
MM should clarify a bit if it is a 70/16 they should be the same or damn close. I have several different old tyres in the shed in different widths and they are almost identical diameter eg 225/70/16 235, 245 and 265 in 4x4 tyres. Same in car tyres 60, 50 and 40s. I thought the 70 number was actually the profile (wall size of tyre) so therefore you could go 60/70/75/80/85 in a 16" tyre and would get some differences in overall diameter. The 16" should be the size of the inside diameter of the tyre (wheel). Please let me know if this is wrong.:)
Obvously different manufacturers tolerances may mean mm in difference but should not be any huge variation, tread depth may also effect eg a M/T may have a slightly bigger diameter than an A/T even though they are listed as the same size due to deeper chunkier tread on the M/T.

[PAT303]

I have never had so many alignments,rotations etc as when I had coopers and they still wore uneven.The cooper tyre center people always blamed my vehicle(it's an old land rover was common),funny thing was never had the problem before or since.To end it the place now sells Pirelli and Michelin and don't recommend cooper. Pat

[hiline]

same thing here .....

never had a problem with tyres wearing uneven before them
and i dont rotate my tryes normally

but these STT you just have to

[TheLowRanger]

MM should clarify a bit if it is a 70/16 they should be the same or damn close. I have several different old tyres in the shed in different widths and they are almost identical diameter eg 225/70/16 235, 245 and 265 in 4x4 tyres. Same in car tyres 60, 50 and 40s. I thought the 70 number was actually the profile (wall size of tyre) so therefore you could go 60/70/75/80/85 in a 16" tyre and would get some differences in overall diameter. The 16" should be the size of the inside diameter of the tyre (wheel). Please let me know if this is wrong.:)
Obvously different manufacturers tolerances may mean mm in difference but should not be any huge variation, tread depth may also effect eg a M/T may have a slightly bigger diameter than an A/T even though they are listed as the same size due to deeper chunkier tread on the M/T.
As was mentioned, the 70 is expressed as a percentage of the tyres width, regardless of what the rim size is. Eg. 235/70/16 means the tyre is 235mm wide, the sidewall profile is 70% x 235mm which equals 164.5mm and the 16 is the rim size. Overall tyre diameter is 406.4mm (16") + 2x164.5 (top and bottom sidewalls) = 735.4mm. This can be used as a reasonably accurate guide, but bear in mind that different brands will have different overall diameters for the same size tyre. Using this formula, the diameter for a 265/70/16 tyre is 777.4 which means the tyre is around 1.5 inches taller than the standard tyre, therefore giving the speedo inaccuracy.

[TheLowRanger]

I ran a set of Cooper ST's on my RRC for over 100 000k's with still more than legal tread depth. I did have some chipping issues with them (this was 5-6 years ago) but this didn't affect the life of the tyre. I was very impressed with these tyres off road, but their downfall was wet bitumen. I have just put a set of 245/75/16 STT's on my D1 and am extremely happy with their grip and noise levels in all circumstances. I would recommend the STT over the ST due to the fact that I still have very good wet bitumen handling with the STT's, with more grip off road and less on road noise. I was talking to a guy in Broome the day before I picked up my tyres, who was running STT's on his D2, and his front tyres had so far done 120 000k's. Not too bad for a muddy. I did have to trim up the rear wheel arches a bit to stop them from scrubbing, and I still have to do a slight adjustment to the steering stops, but as mentioned the rear wheel arches are bigger on the D2.

[ak]

Now I could have this wrong as the older I get the more I am losing it, but didn't Redback or someome one on here post a little while ago that Cooper ST or STT's are no good on a D2 due to being too grippy for the traction control to work properly.

Apoligies if this was not you Baz.

[davros]

My 2000 disco II handbook lists 3 possible tyre and rim combos Harlie,

7J x 16 rim with 235/70 R16
8J x 16 rim with 255/65 R16
8J x 16 rim with 255/55 R18

LowRanger, if this is the case then I presume the sidewall "% of the width" numbers (70, 65, 55) decreasing as the tire width increases or rim size expands, means the overall outside diameter of the tyre remains about the same?

Dave

[BigJon]

My 2000 disco II handbook lists 3 possible tyre and rim combos Harlie,

7J x 16 rim with 235/70 R16
8J x 16 rim with 255/65 R16
8J x 16 rim with 255/55 R18

LowRanger, if this is the case then I presume the sidewall "% of the width" numbers (70, 65, 55) decreasing as the tire width increases or rim size expands, means the overall outside diameter of the tyre remains about the same?

Dave

Yes, all of those tyres listed are about the same diameter.

[CraigE]

As was mentioned, the 70 is expressed as a percentage of the tyres width, regardless of what the rim size is. Eg. 235/70/16 means the tyre is 235mm wide, the sidewall profile is 70% x 235mm which equals 164.5mm and the 16 is the rim size. Overall tyre diameter is 406.4mm (16") + 2x164.5 (top and bottom sidewalls) = 735.4mm. This can be used as a reasonably accurate guide, but bear in mind that different brands will have different overall diameters for the same size tyre. Using this formula, the diameter for a 265/70/16 tyre is 777.4 which means the tyre is around 1.5 inches taller than the standard tyre, therefore giving the speedo inaccuracy.


Good explanation.
This site is useful to calculate differences between tyres
Tire size calculator (http://www.miata.net/garage/tirecalc.html)

[Chazb]

Yes, all of those tyres listed are about the same diameter.

Aha....and now I am confused again! So if my 1999 Disco 2 handbook says the same thing (dont have it to hand, but think its similar), is it ok for me to go and put 225/75/R16 tyres on it or not?!

I went to my local Cooper dealer at lunchtime and he definitely will not put 245/75/R16s on. He says they rub without a doubt. I kind of believe him as what does he has to lose? He is actually persuading me into getting the cheaper STs at 225/75/R16.....

[Xavie]

Lol - would have thought at least someone would defend the Coopers....I mean someone must be buying them right?! I just find them too expensive to consider next to cheaper and better built tyres.

Angus

They were great on my forester!

[BigJon]

You can fit them, but they might be a little smaller.

The 245/75 R 16 won't cause any dramas. As mentioned, a friend of mine has that size on his Disco II, although on 8 inch wide rims.

[mrapocalypse]

My 265/70/16 didn't rub but they looked HUGE in the arches. Now they look small with a 2" lift.

[Graeme]

I went to my local Cooper dealer at lunchtime and he definitely will not put 245/75/R16s on. He says they rub without a doubt. I kind of believe him as what does he has to lose? He is actually persuading me into getting the cheaper STs at 225/75/R16.....
Any chance he has a set that he's finding hard to sell?

[Slunnie]

Now I could have this wrong as the older I get the more I am losing it, but didn't Redback or someome one on here post a little while ago that Cooper ST or STT's are no good on a D2 due to being too grippy for the traction control to work properly.

Apoligies if this was not you Baz.
Yep, I would read this thread carefully. The original Cooper ST is still the same as when it came out. There was the ST-C which is the same tread pattern but with a softer compound which they thought would prevent the outer lugs from being torn off the tyre - and this in it's limited size range has been met with mixed success.
http://www.aulro.com/afvb/technical-chatter/41007-tyres.html


I would not ever fit the Cooper ST to a Disco2. I don't believe the manufacture of the tyre is satisfactory, and I believe the fragile design of the tyre which is intolerant of wheel spin (which causes outer lugs to tear off) is incompatible with ETC traction systems.

[BMKal]

My 265/70/16 didn't rub but they looked HUGE in the arches. Now they look small with a 2" lift.

These are 265/70/16's on a D2 which has not been lifted.

6151 6152

They do fill the arches a fair bit more than the original Michelin's, but there is no problem with rubbing on anything. They have made a huge improvement in the way the vehicle rides / travels. The only problems are that the speedo is definitely a bit out, though I haven't had a chance yet to measure against GPS (I'm guessing about 10% error based on indicated speed vs rpm compared to previous), and that the spare would not fit onto the carrier in it's orginal position - had to raise it by about an inch, which is a very easy mod.

[BigJon]

(I'm guessing about 10% error based on indicated speed vs rpm compared to previous),

Changing tyre size won't have any effect on the indicated speed vs RPM equation. The change is downstream of both the RPM sensing (tacho) and speed sensing (speedo) so the relationship between the two won't be altered.

[mrapocalypse]

I went and measured my 265/70/16 ST tyre yesterday. Here's what I came up with....
it is 265mm Wide.
It isn't 70% though.... I got 155mm from rim to tread. It should be 185!
It is 760mm in height in total. Roughly 30 inches (2.99 inches) measured.

What do we make of that?

[BMKal]

Changing tyre size won't have any effect on the indicated speed vs RPM equation. The change is downstream of both the RPM sensing (tacho) and speed sensing (speedo) so the relationship between the two won't be altered.

Ah yep - you're right there BigJon. I should have said "estimated" speed. :bangin:

[cockie55]

As every one says with a D2 you are fine at that size of 245/75/R16 ....D1 however is a bit of a squeeze and potential for some steeering stop adjustment. Contrary supplier advice you have got on that size is probably based on your rolling diam change probably exceeding self certified statutory max change to factory (change usualy 15mm in most states) and they worried about liability if they fit them. If you worried get insurance endorsement to that size. For D1's many consider that size is probably the better all round size than factory yet it is around a 35mm increase over factrir rolling diameter.

[2 rocks]

Well I'm running 265 STs on my D2 and have found no problems - apart from being noisier on the road than my old Dueler 693's were on the Paj. Had the "old" pattern STTs on the Wrangler and they used to "interesting" in the wet, especially on a short wheelbase...but fun! :)
Mike