Vehicle & Technical > Discovery

Tyres

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Jimbo:
Hi, long time - no posts !

I know that the subject of tyres/wheels/sizes etc, has been done to death on various forums, but I have a couple of questions that I cant find the answers to.....

My Disco currently wears 18" wheels, fitted with 255/55/18 rubber, and I now need to get it some new boots. Ideally, I'd like an AT tyre (had BFG AT's on my last Disco), but they dont make them in 18" size, so I've acquired a set of five D2 16" wheels, fitted with part-worn 235/70/16's.

1. When the time comes (when SWMBO is not looking !), can I fit 245/75/16 tyres to these wheels, with no adverse affect to the truck ?

2. Will I have to change the steering lock stops (longer ones fitted at the moment)

3. I have SLS, will 245/75's cause any problems ?

TIA, and sorry for asking what are probably really dumb questions !

Jim

muddyweb:
BFG Rugged Trail come in 18" sizes...

http://www.devon4x4.com/news/13


They are an all terrain style tyre..

Jimbo:
Tim

I saw this tyre on a refurbed 90 in LRE - spoke to the garage and they said that the tyre is not suitable for the Disco, it would 'upset' the gearing apparently !

Jim

muddyweb:
Actually... they will probably be a bit big for what you want   :oops:

Mace:
255/55/18's give a 10.5" width and 29" diameter approx
235/70/16's give a 9.5" width and 29" diameter approx
245/75/16's give a 9.6" width and 30.6" diameter approx

So in relation to your original tyres, the 245's will be narrower but taller without any obvious problems. You'll find your speedo reads approx 5% less than you're actually doing. You should be able to wind your bump stops in a few turns also. Shouldn't need to change them. You'll gain approx 3/4" under each axle in the process which is always worth while when venturing off the tarmac.

I'd say No Probs at all.

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