Mis-match Gtr Wheels

[bn_sil80]

Ok, I've heard its bad to run mis-match size wheels, front and back, on a GTR because it puts more strain on the centre diff. Is this true?

I have seen a few standard and big horsepower GTR's running mis-match size wheels. I'm looking at purchasing a set of front 9 inch and rear 10 inch wheels for my R33 GTR.

[(OO)SKYLINE(OO)]

Yes you can stress out the Centre Transfer Case.

Just from memory, I think the tyres has to be the same height... So you can go wider but the height needs to be same front and rear...

[bn_sil80]

Yeah it's going to be the same height, but different widths. I plan of running 255 or 265 tyres all round though. Is this still a problem?

[nisskid]

rolling diameter needs to be close to equal front and rear, u can run whatever width/diameter wheel u want front and rear, as long as the profile is there to match. if u want, post up what sizes u want then we can recommend the profile ull need.

[nisskid]

for instance, u can run a 205/45 R18 at the front, and a 265/40 R17 at the rear, and have no issues.

[donkey]

hmm, i ran into this problem with my r33gtr, had 285x18x30 car was tramlining, so the tyre shop 'professionals' put a 255x35 up front.

i drove of and the car was putting all the power up to front diff (torque split was going to max) they put original tyres back on, fixed the problem, but the gauge still flicks up momenteraly on take off, even when driving slow.....so not to sure whats happened to it? even using a 30 series will still cause this problem with a smaller width tyre

oh yeah remember to check with tyre shop the 'actual' rolling height of the tyre sizes, remembering that even though the tyres (with different widths) are both '30 series' etc it is still 30% of the width of the tyre, so there will be a small profile difference in rolling height.....so for me matching profile sizes didnt mean crap

like nisskid said check rolling diameter

this was my mare of an experience, maybe it was just my crazy cash pit playing up?ha

robbie

Edited August 30, 2008 by donkey

[bn_sil80]

Sorry guys, i should have been more clear on the topic. The wheels are 19x9 and 19x10. I'll prob take the tyres off the rims, which are 235 and 275's and replace with a new set of 265's all around or if the 275's are ok just get a pair of 275's.

thanks for the info guys,

Roshan

[Bakes]

The overall rolling diameter will be the same if you use the same tyre on different rim widths so it will be OK in that sense.

I think you will find that most 275 tyres are suited to 9.5 to 10.5 inch wide tyres though