Childsy

Ok somehow I've not recognised that my front right tyre is a Bridgestone reo40 rather than a reo50 like the rest! Could this cause the pulling?

CHIPPO

Indeed it could be your problem , why do people mix up tyres , I wont even do it on a mundane car

You need to sort that , sort the geo and check the calipers.

Childsy

God knows! Not like the reo40 is any cheaper.....

But hey will get a reo50, unseize the camber bolts, check calipers and hope for the best :-)

CHIPPO

Agian , you need 2 tyres minimum , so they have the same rolling radius , i.e tread depth, and come from the same batch , so thier age is the same and the compound is from the same mix.

I am not familiar with the tread paterns of the 2 bridgstone tyres or the constrution but i bet they differ, as a result the levels of grip and rolling resistance will differ.

Childsy

Yh you are probably right, they must be constructed differently as there would be no point making both a reo40 and reo50 tyre.

s2k_Nut

That odd tyre would defo cause a problem like you are encountering I reckon, especially as you reckon it's not under braking but on acceleration?

Childsy

Well I certainly hope so as that's a lovely simple fix!

BenRNBP

There was a thread a while back that had "identical" tyres (same make and model) but suffered the same symptoms as you - pulled one way on acceleration and the other on braking. They discovered (at Centre Gravity I think) that they had been made months apart in different fabs so it's definitely worth sorting out if something that small can make a difference. I can't find the thread but will post it up if I find it.

Childsy

Thanks that would be an interesting read! Crazy that the same tyres can be made differently and effect handling of the car like its doing!

BenRNBP

Here you go https://www.s2ki.com/s2000/topic/992...-was-the-tyres