Thread: Odd tyre size?

I would be replacing the tyre.....235.70 is the standard that a lot of disco's came out with not good of the person that changed to 245's and didn't change the spare.

its not good for the car to have such a variant in rolling diameter between the to wheels..
change it as soon as you can

Thanks for that mate.
Yeah, unfortunately the Disco came with the 4 bigger tyres and original spare when I bought it. Something I always knew about, and one of those "I'll get round to changing that one day" things.

Now its too late. Bugger!

Cheers,

..:: KIEREN ::..
2000 Disco II Auto V8
Object Of Mass Consumption

245/70R16 is the next size up but definitely not a common size. It will fit a D2 as easily as the 235/70 so no need for suspension lift etc. What DB said stands, I'd not drive it much until you get a 2 new tyres to mach the other 3 (or 5 new tyres that match).

As an alternative fix for the short term you can use your rolling radius to adjust the air pressure in your car. A higher pressure in the 235 and lower pressure in the 245s adjusted to give you the same height from the hub to the road when hot.

The 235 should be on the rear and not the steer axle.

Diana

Originally Posted by dm_td5

245/70R16

is the next size up but definitely not a common size.

It will fit a D2 as easily as the 235/70 so no need for suspension lift etc. What DB said stands, I'd not drive it much until you get a 2 new tyres to mach the other 3 (or 5 new tyres that match).

I was sure that some disco's got released in 245/70

the later D1's

I could be wrong on that of course

Not in Australia at least. The D2's did come with 235/70R16 and 255/60R18 which are near enough to the same diameter. Coopers and others now make a 255/70R16 which they will tell you is suitable for the Disco - I had these on my D2.

The difference in diameter between 235/70 and a 245/70 or 255/70 is 15mm or 28mm respectively. The overall diameters are: 29", 29.6" and 30.1".

get two replacements and relegate the 235x70 to ebay or a trailer and put the surviving 245X70 onto spare tyre duty.

I would try to get that 235x70 off the car soon without panic but I would not go on holidays with it on the axle.

you won't get wind up unless the center diff lock is on, the differental action will allow for the differance in diameter just as when you go around a corner one wheel is going faster then the other, but if you could imagine the diffs would be doing double time and a half to allow for this and this puts heat and stress on the diffs not good. someone said letting the tyre pressure down on the other tyres could work but remember that lower tyre pressures at highway speed give bad handling and the tyre temperature increases and you can delaminate the tyres so go slow I would say no faster than 70k on the bituman.