Tyre & wheel size advice - Discovery 2

[Forged]

G'day all,

Ive read numerous threads on tyre sizes and what combination works well. Im set on 265/75R16's however i need some advice on wheel sizes.

I can get both 16x7 +25 or 16x8 +30. Which would be the preferred size wheel for those tyres on a Discovery 2 with a 50mm lift?

Do i want to be at the upper end of the width size for those tyres?

Cheers in advance.

Dan

[ramblingboy42]

this has been spoken about many times.

the 265/75 changes your gearing significantly enough.

you can definitely see it on your speedometer.

even with 50mm Lift I would still go for 245/70, I have had both and there is no significant improvement in the vehicles capability with 265's from my experience.

they will possibly stop you from entering underground carparks.

[ramblingboy42]

just to add Forged , without flares the 265's will chuck mud up the side of your car , so assume theyre chucking dirt.

what tyres are you fitting? bridgestone 697's are good but throw stones.

I had Khumo kl71 m/t's for about 80k and will go back to them.

I have recently , surprisingly , very easily reached the 697's adhesion limits in wet weather.

Maybe I like to go thru roundabouts too fast......

[Forged]

this has been spoken about many times.

the 265/75 changes your gearing significantly enough.

you can definitely see it on your speedometer.

even with 50mm Lift I would still go for 245/70, I have had both and there is no significant improvement in the vehicles capability with 265's from my experience.

they will possibly stop you from entering underground carparks.

Thanks Ramblingboy. I do understand the consequences of running those size tyres and im prepared to manage them.

However my question was more focused towards the wheel sizes and offsets. Do you have any thoughts on that?

Cheers

[ramblingboy42]

I'm using standard rims with no offsets, so can't really comment.

with the extra width of a 265 why are you looking for offset?

I'm just not one for changing geometry.

[Forged]

I'm using standard rims with no offsets, so can't really comment.

with the extra width of a 265 why are you looking for offset?

I'm just not one for changing geometry.

Hence why im asking for advice. Im one to obsessively research things before makingdecisions. I've noted a few D2 owners comment on stability when raising theirD2 by 50mm and that increasing the track helped resolve this. Wouldn't the 16x8+30 wheel also provide greater clearance from suspension components?

[singlecell]

Ive heard the 16x8 +30 will place the tyres outside of the stock black guards. The 16x7 + 25 will sit under the stock black guards but stick out if you have just the standard body work.

[Forged]

Ive heard the 16x8 +30 will place the tyres outside of the stock black guards. The 16x7 + 25 will sit under the stock black guards but stick out if you have just the standard body work.

Cheers singlecell, that's extremely helpful! Can anyone confirm that they will sit outside the guards?

[Disco_Fever]

265/75 16s on stock rims do sit outside the guards, but only a little. Was going to post pic, but won't wor for some reason.

[SPROVER]

265/75 16s on stock rims do sit outside the guards, but only a little. Was going to post pic, but won't wor for some reason.

I run 265 75 16s on P38 alloys and they don't stick out past the guards.

[Forged]

Cheers guys.

So I'm assuming the stock, existing setup is +57 with 235/70R16. I measured the distance to the guard from the lip of the wheel which is 45mm. The 16x8 +30 will poke out 39.7mm leaving 5.3mm clearance. I'm unsure how far the tyre 'bulge' at 36psi will extend outside the rim.

[Thingy]

Technically you need 8" rims for 265's . Having said that , i run standard 7" rims with my 265 muddies with no probs.

[phibbzy]

Just had to swap my 265/75R16 Hancook Dynapro RT03 muds from 16x8 Dynamic (I believe they are +30) to the factory 16x7 alloys as they were rubbing hard on any flex and even speed humps.

Fine now on the factory alloys.

Just a bit of info for you on how offset can affect...

[Forged]

Just had to swap my 265/75R16 Hancook Dynapro RT03 muds from 16x8 Dynamic (I believe they are +30) to the factory 16x7 alloys as they were rubbing hard on any flex and even speed humps.

Fine now on the factory alloys.

Just a bit of info for you on how offset can affect...

Thats no good! Thanks for that infromation. Can i ask if you have a lift kit installed?

[Slunnie]

The factory offset I think is the best. I'd expect that if you go to further offset rims that you'll end up rubbing the tyres on the bodywork. I even know of 265's rubbing around the rear doors on standard rims, although this doesn't appear to be the normal.

With regards to offset differences between the factory 16x7 and 16x8, irrespective of if they were from a Disco2 or P38a Rangie, they are all offset the same. So, within the guards, the tyres will sit in the same place despite the rim width change. You will however get a slightly larger bag width from the tyre but thats about it.

My opinion is to stay with factory rims also. They also have significantly better bead retention than any aftermarket rim that I've ever seen which is good for offroading.

[Jazzman]

Cheers singlecell, that's extremely helpful! Can anyone confirm that they will sit outside the guards?



I run 265X75 16 MTZ's on 25mm off set Dynamic rims and they just sit inside the stock flares on flat ground.


Before my 2" suspension lift the front tires hit the guards during small flex and turning, e.g entering driveways

[Jazzman]

123
I run 265X75 16 MTZ's on 25mm off set Dynamic rims and they just sit inside the stock flares on flat ground.


Before my 2" suspension lift the front tires hit the guards during small flex and turning, e.g entering driveways. Now it is fine. In fact I would recommend the 25mm offset with flares and 265 75 16 to anyone who wanted to drive challenging off road 4WD tracks. I had the 30mm offset on my RRC and they stuck out too far and don't recommend them for those not willing to cut guards.

[Jazzman]

I think I hit the wrong button somewhere there.

[muddymatt]

The factory offset I think is the best. I'd expect that if you go to further offset rims that you'll end up rubbing the tyres on the bodywork. I even know of 265's rubbing around the rear doors on standard rims, although this doesn't appear to be the normal.

With regards to offset differences between the factory 16x7 and 16x8, irrespective of if they were from a Disco2 or P38a Rangie, they are all offset the same. So, within the guards, the tyres will sit in the same place despite the rim width change. You will however get a slightly larger bag width from the tyre but thats about it.

My opinion is to stay with factory rims also. They also have significantly better bead retention than any aftermarket rim that I've ever seen which is good for offroading.

I maybe asking a silly question but I presume all D2 stock rims fit all D2's?
I have just got a TD5 2004 D2a on 18's (factory hurricane rims) with 255/55/18 very road based tyres.
I'm planning on a second set of 16's with mud tyres (probably 245/70/16) on rims like these...
Discovery 2 rims x5 | Trade Me (http://www.trademe.co.nz/Browse/Listing.aspx?id=857469306)

Will these clear my brakes?

Thanks for a great forum too - this is my 1st post here!

[Jazzman]

As far as I know the Range Rover P38 and Discovery 2 rims have the same offset and stud pattern.

These being Disco 2 rims I'd be pretty confident they will fit with that tire size and no modification required.

[DiscoTurtle]

Hi gents, very new here but I've searched and read about 45 pages back looking for help.
I've recently purchased a disco '02 td5, and would like some advice on rims/tyres.
its currently running 245/70/17 (aftermarket allied rims, not sure of width)
the Spare is a 245/75/16, so i'd like to replace all 5.
I'd like to change to some pro comp steel series, and am happy with 245's or 265's, would I need to get 16x7 or 16x8 rims?
I'd be looking for BF A/T's
Sorry to hijack the post, all help would be appreciated.
Cheers

[mate]

just wondering what PCD should i look for im looking to get some sunrasia rims and 33" tyres for mine but have no idea what the pcd is so i cant start looking

[AndrewMilne]

just wondering what PCD should i look for im looking to get some sunrasia rims and 33" tyres for mine but have no idea what the pcd is so i cant start looking
Gooday, Mate
PCD stands for "Pitch Circle Diameter".
It is the diameter of the circle on which lie the centres of all the wheel nuts / studs.
For a wheel with only 4 studs, it is simply the distance between directly opposite ones.
Cheers, Andrew

[Tombie]

Technically you need 8" rims for 265's . Having said that , i run standard 7" rims with my 265 muddies with no probs.


No you don't....

[Tombie]

The factory offset I think is the best. I'd expect that if you go to further offset rims that you'll end up rubbing the tyres on the bodywork. I even know of 265's rubbing around the rear doors on standard rims, although this doesn't appear to be the normal.

With regards to offset differences between the factory 16x7 and 16x8, irrespective of if they were from a Disco2 or P38a Rangie, they are all offset the same. So, within the guards, the tyres will sit in the same place despite the rim width change. You will however get a slightly larger bag width from the tyre but thats about it.

Not quite correct... And it's why the 8" rims need steering stop adjustment.

8" = 203mm (centre is 101.5mm)
7" = 178mm (centre is 89mm)

101.5 + 57 = 158.5mm behind flange

89 + 57 = 147mm behind flange

The OUTER face will be in the same position relative to the guard.




My opinion is to stay with factory rims also. They also have significantly better bead retention than any aftermarket rim that I've ever seen which is good for offroading.


Agreed....

And the offset the OP is quoting +30 is unroadworthy as well...

[mate]

Gooday, Mate
PCD stands for "Pitch Circle Diameter".
It is the diameter of the circle on which lie the centres of all the wheel nuts / studs.
For a wheel with only 4 studs, it is simply the distance between directly opposite ones.
Cheers, Andrew


thanks for that. Whats the pcd of stock land rover d2 stud pattern lol

[PhilipA]

Not quite correct... And it's why the 8" rims need steering stop adjustment

Er I have 16x8 38A rims and they don't need lock stop adjustment with 255x70x16 . I don't know is 38A rims are the same as D2 8 inch rims however.
In fact I shortened mine as mine had the mysterious long stops with 18 inch rims.
I still think the long stops are because most 18 inch cars in UK spec have ACE and the pipes travel along the outside of the RH front chassis rail.

Regards Philip A

[gusthedog]

Hi gents, very new here but I've searched and read about 45 pages back looking for help.
I've recently purchased a disco '02 td5, and would like some advice on rims/tyres.
its currently running 245/70/17 (aftermarket allied rims, not sure of width)
the Spare is a 245/75/16, so i'd like to replace all 5.
I'd like to change to some pro comp steel series, and am happy with 245's or 265's, would I need to get 16x7 or 16x8 rims?
I'd be looking for BF A/T's
Sorry to hijack the post, all help would be appreciated.
Cheers

Buy these APT Fabrication Custom Land Rover Parts & Accessories - Land Rover Discovery 2 steel wheels - set of 5 (http://aptfabrication.com.au/discovery-2/product/284-land-rover-discovery-2-steel-wheels-set-of-5)

And put 265/70 for close to standard height or 265/75 for a little less power but more clearance under the diff.

[DiscoTurtle]

Buy these APT Fabrication Custom Land Rover Parts & Accessories - Land Rover Discovery 2 steel wheels - set of 5 (http://aptfabrication.com.au/discovery-2/product/284-land-rover-discovery-2-steel-wheels-set-of-5)

And put 265/70 for close to standard height or 265/75 for a little less power but more clearance under the diff.

Brilliant! Thanks!

[AndrewMilne]

thanks for that. Whats the pcd of stock land rover d2 stud pattern lol


For a rim with 5 stud holes;


If you measure the straight-line distance between the centre of one stud (or hole in the rim) to the nearest one, the PCD is:

(Stud-centre to stud-centre distance) x 1.701


If you measure the distance between centres in mm, the PCD will be in mm. For example, if the distance between the centres of 2 adjacent studs is 40 mm, the PCD for that rim is 68.04 mm.

[AndrewMilne]

thanks for that. Whats the pcd of stock land rover d2 stud pattern lol

..... and for a standard 5-stud 7J x 16 Discovery 2 rim, the PCD is 120 mm.


Hope that helps,
Andrew

[gusthedog]

For a rim with 5 stud holes;


If you measure the straight-line distance between the centre of one stud (or hole in the rim) to the nearest one, the PCD is:

(Stud-centre to stud-centre distance) x 1.701


If you measure the distance between centres in mm, the PCD will be in mm. For example, if the distance between the centres of 2 adjacent studs is 40 mm, the PCD for that rim is 68.04 mm.

I believe technically PCD is supposed to be calculated like they say on this link Trailer wheel PCD how to work out 4 and 5 stud PCD's with diagrams (http://www.towingandtrailers.co.uk/shop/132/137/165/index.htm)

That is PCD is the centre bore of the wheel + two times the distance between the centre of two studs. The results will be within a few mm of each other but that can be significant.

[AndrewMilne]

That is PCD is the centre bore of the wheel + two times the distance between the centre of two studs. The results will be within a few mm of each other but that can be significant.



Hi Pricey,
I had a look at your link, and it seems to me that what you have written should be:
"That is PCD is the centre bore of the wheel + two times the radial distance between the edge of the bore and the centre of any stud".
In any case, it would be interesting to calculate the PCD for the same rim, by both methods - do you have internal caliper etc to do that?
I don't, but I'd be interested in your results both ways, if you do.
Cheers, Andrew