Rims and Tyres

[Teotwauki]

G'day

I'm looking at replacing the rims and tyres on my 110 tdi (rear discs). I will most likley be going with a set of big horns, as they seems to have a great rep, especialy for the price. My main concearn, and the reason for this thread is that I would like to find out what the largest size tyre I can reasonably fir with stock suspension. I was considering a 2" lift and some guard chops to fir 35"'s but in reality something closer to a 33" is probably the better option considering legalities. My preference is to a 15" rim due to the extra sidewall.

A mate of mine has quite a few old range rover rims sitting around, and is willing to let me trial a set with some new buckshots. What are your oppinions on range rover rims, does anyone know the specs, offset and width? How strong are they?

In short, what's the largest tyre, hight and width wise, that I can fit without issues legaly and phisicaly, and what's the best rim size option? Will range rover rims fit the bill?

[cal415]

Alot of people run 35s on daily driven trucks without much hassles legally, on a fender 35s are an easy fit with a little bit of lift and a slight trim on the flares, i ran 35s on my county on stock suspension(very sagged) without cutting but it did rub a bit, i run 37s now but i have cut a bit out of the gaurds and flares, not heaps though i also have lifted it about 2in now.

Rangie steel rims are 16x6 i think? not sure about the offset, you should be able to find some steel rims from most tyre places that will have about 30-50mm back space over standard, if you fit 35x12.5 50mm will be needed, narrow/shorter tyres 30mm will be fine. Ive been looking around lately for some more rims myself and i have found 15x8s and 16x8s in good offsets are fairly easy to get ahold of and usualy sell for about 100-120 a rim.

If you decide 35s are to big/to much hassle, then 255/85-16s work great on a fender and come in at about 33.5in i think. a set of maxxis bighorns in this size will set you back about 260 a tyre i think.

[Teotwauki]

I may be wrong here, but if not then your Mick, Chris's brother. I'm a mate of Chris and Dobbo, so chances are I'll see you round some time. Thanks allot for that reply about tyres and rims aswell, just what I needed. Now I just need to give my springs a measure and see how they are going. Chopping the cuards doesn't worry me if it is needed, I may go with the 35's if you don't think it will cause any major problems.
Jim

[Jock The Rock]

I'll be running 255/85 on Landrover Alloys when I get the money to upgrade tyres.

Where you say Rangie Rims are they the alloys or steelies?

I've been told a 255 will fit nicely on a stock Defender, and it will also correct the speedo :D

[rick130]

<snip>

I've been told a 255 will fit nicely on a stock Defender, and it will also correct the speedo :D

yep, been running them for years.
Minimum rim width needed is 6.5".

[DeeJay]

The Range Rover rims (alloys) I have on my County very slightly rub the shock absorber mounts on full articulation.
So I guess they are not quite as offset as the County.
Easy enough to measure if your mate has some.

[geckos]

255/85 r16 (33) fit on 16 x 7 rims..... im looking 16x8 rim soon steelies from LRA $95 a friend got them for.

[Mrlandyman100]

I'll be running 255/85 on Landrover Alloys when I get the money to upgrade tyres.

Where you say Rangie Rims are they the alloys or steelies?

I've been told a 255 will fit nicely on a stock Defender, and it will also correct the speedo :D

Can you give me some info on the correction of the speedo? I think my speedo is reading about 9% too slow because when i am on the high way and sit at about 93km/h thats the speed every one else is going. At 100km/h i am over taking most peoples... :D

Cheers
Ben

[rovercare]

15x10"s and 35's what more could you want:angel:

[Jock The Rock]

Can you give me some info on the correction of the speedo? I think my speedo is reading about 9% too slow because when i am on the high way and sit at about 93km/h thats the speed every one else is going. At 100km/h i am over taking most peoples... :D

Cheers
Ben

When sitting on 100 on the speedo I'm only doing about 92. justinc a member on the forum told me that one of his clients, fitted 255/85s too his Td5 130 and it made the speedo perfect :)

[nzlandies]

Some 90s came out on 205-16s which have a different speedo pinion. If you use this gear instead your speedo will read 1% over with 265-75, 235-85 or 7-50 16s. This is what I have.

[OZ Landy]

Has anybody 255/85/R16 on his Defender 130?
Do you need any modification or will they fit nicely.
Which brand did you choose?

Thanks for your info guys

[Benny_IIA]

Has anybody 255/85/R16 on his Defender 130?

Do you need any modification or will they fit nicely.
Which brand did you choose?

Thanks for your info guys


They should fit nicely on a 130, they have wider rims STD 6.5”

255's are not a very common size only a few companies make them

BFG, Maxxis and I think Cooper (**** anyway)


ben.....

[Carslil Jim]

Can you give me some info on the correction of the speedo? I think my speedo is reading about 9% too slow because when i am on the high way and sit at about 93km/h thats the speed every one else is going. At 100km/h i am over taking most peoples...

I have given up on speedos. I use the GPS for the true speed and here is why. I think speedos can only be 100% accurate for one moment of time on one day, because of tyre wear. Here is the math. My tyres are new and measure 805mm diameter. The tread is 10mm deep. If we compare the wheel revolutions for full tread and no tread this is what we get:







Diameter Pye Circumf Rotations/k 805 3.14 2530 395.26 785 3.14 2467 405.33



So you can see there is a potential difference of 10 revolutions per kilometre between new and worn tires...and that is about 25 metres extra to travel on the worn tyres. At least your acceleration will be better (marginally) on the worn tyres (as long as they dont slip!).

[Carslil Jim]

The spreadsheet copy did not come out formatted correctly so I will redo it here:

Tyre Diameter Pye Circumference Revolutions/km
805mm 3.14 2530mm 395
795mm 3.14 2467mm 405

I think I have the maths right, but I have made mistakes with the dreaded milimetre, centremetre, kilometre etc in the past!

[MacFamily]

Gday Teotwauki

Iam running a 285/75 16 just under a 33" tyre on a 16x8 zero offset rim with no problems yet :).

If you want to see sum pics look here http://www.aulro.com/afvb/members-rides/51687-mac-familys-new-old-wagon-tourer-defender-just-fitted-dual-bat-uhf-compressor-3.html

[Mikey0211]

I used to run 33 x 12.5 x 15's on a ( i think a ) -20mm offset rim.. They stuck out about 2" past the gaurds..

They looked great and worked awesome offroad but have recently just gone back to a 16x7 rim with 255 85 16's bighorns.... It made it sooo much more drivable and didn't wander as much as the other tyres...

[JDNSW]

The spreadsheet copy did not come out formatted correctly so I will redo it here:

Tyre Diameter Pye Circumference Revolutions/km
805mm 3.14 2530mm 395
795mm 3.14 2467mm 405

I think I have the maths right, but I have made mistakes with the dreaded milimetre, centremetre, kilometre etc in the past!

Without checking your maths, may I point out that the difference is about 2% - which is just a fraction more than the width of the speedo needle at 100kph - considerably less than the calibration error in my experience!

While on the subject, although not mentioned, I would point out that tyre pressure, for any reasonable pressure, does not make any difference - if you think about it for a moment, the apparent radius of the tyre changes, but the circumference of the tread does not - and that is what is laid down on the road every turn. regardless of the pressure (unless the pressure is high enough to stretch the belt or low enough to allow it to shrink - which with any realistic pressure is not going to happen!).

John

[Carslil Jim]

You are right. Its just another one of the contributers to speed error. The GPS is great as it is not subject to vehicle based deficiencies.