PDA

View Full Version : Tyre size



Lockee
12th January 2018, 09:55 PM
Hey All my D3 was fitted with some big rubber by previous owner 275 70 18s that work out to a 33.

What are others running , thinking a 265 60 18 Lt Alk Terrain might be a good size

cripesamighty
12th January 2018, 10:32 PM
I currently have 265/60/18 D697 LT's and they are a good compromise size. Better onroad than 17's and better offroad than 19's, if you know what I mean.

LRD414
12th January 2018, 10:40 PM
The two most popular sizes are 265/60/R18 and 265/65/R18 but there is also quite a few running 285/60/R18. The first one has the advantage of still fitting a fully inflated spare and no rubbing in any position. The other two have the advantage of more sidewall and slightly more clearance but some rubbing and difficulty with fitting the spare. I have also seen the 285 sized spare drag on the ground significantly more in steep pinches. All depends on what trade-offs you’re happiest with.

Scott

specwarop
13th January 2018, 09:30 AM
And setting the new tyre size is possible with the gaptool right?

Lockee
16th January 2018, 12:44 PM
https://www.aulro.com/afvb/images/imported/2018/01/580.jpg

Like the idea of this size

LRD414
16th January 2018, 01:34 PM
Like the idea of this size
255/70/R18 = 814mm diameter.

That's pretty big but slightly narrower than other 18" options.
Hard to say what the rubbing issues would be without test fit.
Would also need to confirm if there's any room in the arches if on the bump stops.
Is the KO2 LT rated in that size?

Scott

Lockee
16th January 2018, 01:36 PM
Running 275 70 18s at present but rubbing

dirvine
16th January 2018, 03:56 PM
Not sure that last size is available in Australia. If it is it is probably a grey import like my BFGs are and BFG Australia will not warranty

Lockee
17th January 2018, 07:21 PM
Bit hard when I do work for BFG....

Lockee
17th January 2018, 07:23 PM
Not sure that last size is available in Australia. If it is it is probably a grey import like my BFGs are and BFG Australia will not warranty

What do you run?

Lockee
17th January 2018, 07:25 PM
https://www.aulro.com/afvb/images/imported/2018/01/621.jpg

275 70 R18LT rub on and off road but pulls them and stops well.


265 65 18 LT May be the go or back to 17s

dirvine
17th January 2018, 07:35 PM
Mine are 265/65/18 but only rated at 114-117. BFG Aust only cover the ones that are 119-121. Whats the difference? The rating only. Both made in USA, Both have same number of plies and band types. So go Figure!. Mine are available in USA, Europe and Africa, but NOT in Aus. Difference in price was $70 per tyre, so go figure? I smell a Aus rip off as usual!!

Lockee
19th January 2018, 07:02 PM
Mine are 265/65/18 but only rated at 114-117. BFG Aust only cover the ones that are 119-121. Whats the difference? The rating only. Both made in USA, Both have same number of plies and band types. So go Figure!. Mine are available in USA, Europe and Africa, but NOT in Aus. Difference in price was $70 per tyre, so go figure? I smell a Aus rip off as usual!!

Leaning to that size. We are a small market and the product guys who decide what we get don’t have much non standard info

dirvine
19th January 2018, 07:23 PM
Leaning to that size. We are a small market and the product guys who decide what we get don’t have much non standard info
This size is available in Australia. I got the cheaper quote on the 119/121 rating but after the tyres were fitted I noticed they were the lower rated ones. I questioned and told them to take them off my new compomotive rims as I wanted the 119 rating. The tyre shop told me they got them directly from BFG! I told them that was not possible. After a bit of a haggle they gave them to me at the cheaper price (as I saw on the internet) Ie $20 cheaper per tyre and they gave me another $50 off as it would have probably cost them that much top remove the tyres. They also gave me a written guarantee they would honour any problems with the tyres in the event that BFG would not. So I really cannot complain. As an aside I can say the tyres have not rubbed on any of the guards. I have LLAMs on the lowest setting all the time and lock to lock has no rubbing. The only issue is that I do have to deflate the spare to fit and I have to remove the tow hitch. The hitch fits OK once the tyre is in place. At the moment In think they are quieter than my old maxxis!

Lockee
19th January 2018, 07:28 PM
Grey imports

Russrobe
20th January 2018, 03:45 PM
I'll stick to the 285 60 18s for touring. So much more comfortable on road than the 265 60 18s. I set them both to 36 psi and the difference is huge. Hardly feel any bump in the road at all with the 286 60s.

I'd keep the 285s on for city driving too if they didn't cost me an extra 0.6l/100kms in fuel use.

265 65 is another option but they would have to be cheaper than the 285 60s for me to consider them as the overall size difference is next to nothing in sidewall height.

I'm 40 000 kilometers into the 285 60 18 LT 697s now... Still 50% wear left.

Russrobe
20th January 2018, 03:49 PM
I'll stick to the 285 60 18s for touring. So much more comfortable on road than the 265 60 18s. I set them both to 36 psi and the difference is huge. Hardly feel any bump in the road at all with the 286 60s.

I'd keep the 285s on for city driving too if they didn't cost me an extra 0.6l/100kms in fuel use.

265 65 is another option but they would have to be cheaper than the 285 60s for me to consider them as the overall size difference is next to nothing in sidewall height.

I'm 40 000 kilometers into the 285 60 18 LT 697s now... Still 50% wear left.As mentioned though the 285 60 18 does hang down significantly and was a factor in me deciding to get the long range tank and RWC.

That driving difference on road though... I just put the 285 back on last night in prep for a beach run tomorrow and the drive is noticeably slower but so much comfier.

rar110
20th January 2018, 06:42 PM
https://www.aulro.com/afvb/images/imported/2018/01/580.jpg

Like the idea of this size

Me too. But you’re unlikely to find a spare if you needed it, when outside a capital.

Lockee
20th January 2018, 06:46 PM
Me too. But you’re unlikely to find a spare if you needed it, when outside a capital.

Will be more now that Prado’s Cruisers jeeps top of line dual cabs and others running this type of size

I would recommend taking a second tyre no rim if required.
Same Said of the 255 85 16s Running on my Rangie Classic Ute

Russrobe
20th January 2018, 07:18 PM
285 60 18 is standard 18" LC200 series size... Don't think it gets any more common than that.

rar110
21st January 2018, 09:29 AM
I went with 265/60/18s as available in regional/remote areas. I’ll be looking for a replacement in 2 years. Will look at 255/70/18.

shanegtr
21st January 2018, 09:52 AM
I run a 265/65/17 on my D3 - practically the same diameter as a 265/60/18. Its a stock Prado size so has good availability for spares

specwarop
21st January 2018, 09:58 AM
So hows the theory work? If you do more city/highway driving than offroad, would it not be better to go for a thinner tyre, like a 235 or 245?

loanrangie
21st January 2018, 11:31 AM
I wouldn't go narrower than original width.

scarry
21st January 2018, 12:02 PM
i went with 265/60/18,which is stock Prado and Pajero size,so would be one of the most common sizes around.
It is also almost exactly OEM tyre diameter for D3/4.
Prado also run 245/70/17 on the GX model.

Uberdisco
21st January 2018, 01:23 PM
275 65 18....rubs on hard cornering.... or roundabouts otherwise fine.... added GOE rods... runs comfortable

JGuestyBoy
5th February 2018, 07:20 PM
Tossing up between 285/60/R18 and 265/60/R18.

How bad is the rubbing on the larger size?

I'm heading up to the cape in a couple of months and I'm undecided as to what size to pick! Of course I'm mindful that off road, I don't want to damage anything at full articulation and still want it to drive as good as it does now on the bitumen.

I've narrowed the tyres down to 3:
Nitto Terra Grapper G2
Hankook Dynapro ATM RF10
Kumho Road Venture MT51

Would love some opinions on choice of tyre and size!

letherm
5th February 2018, 08:08 PM
Tossing up between 285/60/R18 and 265/60/R18.

How bad is the rubbing on the larger size?

I'm heading up to the cape in a couple of months and I'm undecided as to what size to pick! Of course I'm mindful that off road, I don't want to damage anything at full articulation and still want it to drive as good as it does now on the bitumen.

I've narrowed the tyres down to 3:
Nitto Terra Grapper G2
Hankook Dynapro ATM RF10
Kumho Road Venture MT51

Would love some opinions on choice of tyre and size!

I'm waiting for 18" compomotives and was considering these :

Michelin - LTX FORCE 265/60 R18 110T


From the reviews I read they look OK.

Just something to further muddy the waters.[bigsmile1]

Martin

Ean Austral
5th February 2018, 08:46 PM
From D3/D4 FAQ

LR3 Tire Size Chart (http://johnsonrods.com/johnson_rods_2_004.htm)


Cheers Ean

Ean Austral
5th February 2018, 08:54 PM
i went with 265/60/18,which is stock Prado and Pajero size,so would be one of the most common sizes around.
It is also almost exactly OEM tyre diameter for D3/4.
Prado also run 245/70/17 on the GX model.

I run the same on my 18' and on my 17' steel rims I run 265 65 17 which seems to be a common size with Hilux and Ranger from all the adverts I see.

Cheers Ean

whitedisco
6th February 2018, 07:27 PM
Tossing up between 285/60/R18 and 265/60/R18.

I've narrowed the tyres down to 3:
Nitto Terra Grapper G2
Hankook Dynapro ATM RF10
Kumho Road Venture MT51

Would love some opinions on choice of tyre and size!

I have have had Hankook DynaPro AT-M RF10 265/60R18T XL 114s on the D3 for 48k, mostly bitumen roads and one run down the Oodnadatta track. They are great and are lasting well. Tread depth started at 11mm, now about 6.5mm and nice and even. That is with an unused one as spare. Very quiet.
So impressed I got some for the caravan and Hankook Ventus for the boat trailer - an expensive month or two!
cheers
Peter

DiscoMick
6th February 2018, 07:51 PM
A 285 would have to be more absorbent than a 265.

jazzopuk
6th February 2018, 09:27 PM
Very happy with KO2’s

cruiseh
7th February 2018, 04:26 PM
im booked in for some nitto terra grappler G2 275/55/20 on friday, Ill report how the go. done nearly 50K on the factory pirellias, but have lost a tyre dues to screws int he sidewalls during that time, plus rotated the spare, so unsure if thats acceptable lifetime, they still have loads of tread depth, we are just tired of punctures (got glass bottle through a sidewall during the xmas break)

Ive got a friend with a D4 running the same rubber and he loves it, no more noisier, and good all rounder..

this specific size BTW is not LT rated, the two either side of it apparently, are though? i dont do a huge amount of offroading (got a trip on 18th with thelocal LR club) so im not overly bothered, just want a tyre with better sidewall tread faces so i hopefully wont get any more screws through. Nearly always front left too..wierd..

Russrobe
14th February 2018, 11:45 PM
Tossing up between 285/60/R18 and 265/60/R18.

How bad is the rubbing on the larger size?

I'm heading up to the cape in a couple of months and I'm undecided as to what size to pick! Of course I'm mindful that off road, I don't want to damage anything at full articulation and still want it to drive as good as it does now on the bitumen.

I've narrowed the tyres down to 3:
Nitto Terra Grapper G2
Hankook Dynapro ATM RF10
Kumho Road Venture MT51

Would love some opinions on choice of tyre and size!For 285 60 18s:
Zero rubbing on the front, will rub on the rear plastic inner guard if you don't partially remove it to bend a bit of excess steel poking through that it rubs on before putting the guard back on. Most people dont bother though and the only damage is a 10mm long slit to the plastic, zero tyre damage. I didn't bother and I've driven around on the bump stops several times with nothing but a slit in the plastic on one side only.

It is the largest overall size I'd go though as any bigger could cause problems if you were stranded on the bump stops.

As previously mentioned, i own 265 60s and 285 60s and the 285s give a noticeably smoother ride for touring. 265s you can feel every bump in the road by comparison. If you like a firmer ride, go the 265s.

LRD414
15th February 2018, 06:04 AM
Russ, I have two friends with KO2s (both D4s); one on 265/65 and one on 285/60. These sizes are almost identical for diameter and both have rubbing at the front on the chassis protrusion and slightly on the liner. The rubbing is relatively mild and I’ve read other people mention the same thing in here, so I’m surprised you’ve got zero rubbing on the front.

Another thing to consider is how much the spare protrudes in 285, it noticeably reduces clearance at the back and I’ve seen it drag a lot more comparatively exiting steep gullies. Getting the spare up in place is quite difficult even when fully deflated for both 265/65 and 285/60 (I’ve helped with both).

These factors are not showstoppers but should be considered when choosing a size. I also wonder about increased load on CVs etc with the larger diameters. Obviously no way to quantify this but is something in the back of my mind.

Cheers,
Scott

Disco4Dave
15th February 2018, 08:15 AM
Regarding the relative comfort of the various tyre sizes, I assume the reported greater comfort of the 285/60R18s over the 265/60R18s is mainly due to the greater sidewall height of the 285/60s?
If that is correct, then will a switch from OEM 255/50R20 Pirelli Scorpion tyres to 265/60R18 D697s also result in a more comfortable ride, given the LT construction of the D697s?

LRD414
15th February 2018, 09:03 AM
.... will a switch from OEM 255/50R20 Pirelli Scorpion tyres to 265/60R18 D697s also result in a more comfortable ride, given the LT construction of the D697s?
I can report an improvement in ride comfort going from 255/55/R19 HTs to 265/60/R18 D697s.
Not a huge difference and not a main criteria to change (for me).
The flip side is not as tight for handling on the road.

Scott

letherm
15th February 2018, 11:02 AM
The flip side is not as tight for handling on the road.
Scott

Hi Scott.

Could you expand on this? What downside is there exactly? Not sure what you mean by "not as tight".

Martin

Milton477
15th February 2018, 11:47 AM
I can report an improvement in ride comfort going from 255/55/R19 HTs to 265/60/R18 D697s.
Not a huge difference and not a main criteria to change (for me).
The flip side is not as tight for handling on the road.

Scott

The possible difference in handling is precisely the factor that is preventing me from changing to 18's as I tow a van & the D4 tows like a dream.
Thanks Scott, you have confirmed my suspicions.

LRD414
15th February 2018, 12:30 PM
Could you expand on this? What downside is there exactly? Not sure what you mean by "not as tight".
As you change from 18 to 19 to 20 the feeling is sharper with better steering input and turn-in for cornering, however road bumps are more noticeable and the ride less comfortable. So it's not really upside/downside, rather there's factors that are more or less important depending on your usage.

Some of this is down to the tyre volume decreasing with larger wheels but of course some of it relates to the tyre itself. My experience with 19s is road tyres and with 20s Nittos (as a passenger). So I guess a better comparison would be say KO2s on both 18s and 20s to eliminate the difference a tyre makes. Russrobe's comparison between different tyre sizes in 18" suggests tyre volume plays a part but I'm not sure if there's tyre differences in his comparison too.

Hope that makes sense.

Cheers,
Scott

letherm
15th February 2018, 01:14 PM
As you change from 18 to 19 to 20 the feeling is sharper with better steering input and turn-in for cornering, however road bumps are more noticeable and the ride less comfortable. So it's not really upside/downside, rather there's factors that are more or less important depending on your usage.

Some of this is down to the tyre volume decreasing with larger wheels but of course some of it relates to the tyre itself. My experience with 19s is road tyres and with 20s Nittos (as a passenger). So I guess a better comparison would be say KO2s on both 18s and 20s to eliminate the difference a tyre makes. Russrobe's comparison between different tyre sizes in 18" suggests tyre volume plays a part but I'm not sure if there's tyre differences in his comparison too.

Hope that makes sense.

Cheers,
Scott

Thanks Scott.

That's helpful. Sounds like it's not a problem, more a slight softening of responsiveness if that makes sense. I ordered GOE rims to be able to get a more comfortable ride, even if it's marginal, for SWMBO who has a lot of health problems. I'm looking at 265/60/18 in Hankook ATM RF10's, Bridgestone Dueler A/T 697"s and possibly the Michelin LTX Force which has a "cushion guard" layer to minimise road vibrations/shocks (if you can believe the statement on their web site). Don't do any off road driving ATM unfortunately. [bigsad]

Thanks for your reply,
Martin

scarry
16th February 2018, 08:29 PM
Thanks Scott.

That's helpful. Sounds like it's not a problem, more a slight softening of responsiveness if that makes sense. I ordered GOE rims to be able to get a more comfortable ride, even if it's marginal, for SWMBO who has a lot of health problems. I'm looking at 265/60/18 in Hankook ATM RF10's, Bridgestone Dueler A/T 697"s and possibly the Michelin LTX Force which has a "cushion guard" layer to minimise road vibrations/shocks (if you can believe the statement on their web site). Don't do any off road driving ATM unfortunately. [bigsad]

Thanks for your reply,
Martin

A 'P' rated tyre will give a much more comfortable ride than an 'LT' rated tyre of the same size.

But if you want a robust tyre,you may have to go LT.

I would also experiment with pressures,as they affect ride comfort as well.

letherm
16th February 2018, 09:29 PM
A 'P' rated tyre will give a much more comfortable ride than an 'LT' rated tyre of the same size.

But if you want a robust tyre,you may have to go LT.

I would also experiment with pressures,as they affect ride comfort as well.

Thanks Paul.

I had a slight bump against a kerb going through one of those rotten calming devices and split the sidewall on a tyre with only about 5000km on it so was looking for a more robust tyre to avoid this type of problem. Lost confidence in H/T tyres because of that incident. I'll give the pressure change a go too.

Appreciate the advice.

Martin

Russrobe
16th February 2018, 09:42 PM
Russ, I have two friends with KO2s (both D4s); one on 265/65 and one on 285/60. These sizes are almost identical for diameter and both have rubbing at the front on the chassis protrusion and slightly on the liner. The rubbing is relatively mild and I’ve read other people mention the same thing in here, so I’m surprised you’ve got zero rubbing on the front.

Another thing to consider is how much the spare protrudes in 285, it noticeably reduces clearance at the back and I’ve seen it drag a lot more comparatively exiting steep gullies. Getting the spare up in place is quite difficult even when fully deflated for both 265/65 and 285/60 (I’ve helped with both).

These factors are not showstoppers but should be considered when choosing a size. I also wonder about increased load on CVs etc with the larger diameters. Obviously no way to quantify this but is something in the back of my mind.

Cheers,
ScottTip is to add an extra .10 of a degree castor to keep the fronts off the chassis horn. I achieved zero rubbing by doing just this and still staying near on exactly within factory wheel alignment spec. Can near on guarantee whoever has 285 60 18s is either running precisely they correct castor or just under.

My 265 60s are passenger tyres for on road only and yet they're still much firmer than the 285 B stone 697LTs [emoji3] Same pressures of course. 38psi all round unloaded.


Definitely worth considering you'll want a RWC later, which will also lead to a long range tank, because everyone hates jerry's!