Different Rim Width On Gtr ? Advice Please!

[Sinista32]

Ok guys,

Would like the guru's to come out and tell me the impact of running a different rim width on a GTR.

Specifically I have a set of Panasports in the following trim and haven't had any issues. I bought my GTR with these rims in late 2003 and they were on my car until 2011.

Front - 17 x 9.5 +15

Rear - 17 x 10 +20

Tyres are 255/40/R17

I've heard not to run different rim widths on the GTR due to the attessa system ?

Why then does this work without issues ? Same tyre size I'm thinking.

Look forward to your comments.

Richard

[Owgasm]

What do you mean works without issues?

I know for a fact my front drive gauge jumps all over the place with a different wheel on. Especially a spare tyre (fitted to the rear).

[GTR-N1]

It's the rolling diameter that's important so as to not burn out the transfer case.

Rim width can vary but on a GTR, people will normally have the same widths all round Richard.

[Sinista32]

What do you mean works without issues?

I know for a fact my front drive gauge jumps all over the place with a different wheel on. Especially a spare tyre (fitted to the rear).

Not experienced this Owgasam. Gauge works fine, car drives the same and no Attessa light on (yes it works).

Wasn't until yesterday after measuring the rims I picked up the rim width difference. Fronts measured 25cm and rears 26cm. Close enough to 9.5 and 10.

I'll measure again today.

Rolling diameter is the same. 255/40/R17

And like you Terry Ive heard the same and my other sets are the same.

[Owgasm]

Tyres are the same. But once you put them on a different size wheel.

Your rolling diameter will be out due to the stretching or bulging of tyre on different size rims.

There is a % of acceptance in difference, someone who remembers will come in soon. But most people just run the same all round.

[Sinista32]

Same all round is obviously the easiest/best. Thanks Simon

I hope we hear % acceptable difference. I'm attempting to sell these rims in the FS section.

Better also do another more precise measure with a straight line today.

[Moodles2]

Most likely one end has more tread than the other making up for the rolling diameter difference.

[jiffo]

Don't fart about with manufacturer's rolling diameter tyre info, get the tape out and measure the circumference of every tyre.

Match them up side for side and put your largest circumference pair on the rear.

ATTESA can allow for some tyre wear.

As it's a 32 your transfer clutch pack isn't preloaded like later models.