18x9.5r 18x8.5f on gtr

[KILL HSV]

just imported picked up my car about a week ago, and noticed the wheels are 18x9.5 on the back and 18x8.5 on the front

now i know that it affects the attessa system somewhat, but it has the same tires on all round, and was wondering how much it makes a difference.

also it has like a different smaller grey tag thing stuck with double sided tape, (the same that all aftermarket wheels have) which says 10 all round, wtf? why would they put that there?

[blind_elk]

If it has the same size tyres all round, then the rears will have a slightly less rolling circumference. This will cause problems for ATTESSA, because the rears will rotate faster than the fronts, simulating rear-wheel slip.

[Sydneykid]

The change in rolling diameter would be greater due to tyre wear, which the ATTESSA handles easily. Take a front and rear wheel off and measure the circumfrance if you are worried, I will bet it's not as much as 8mm of tread depth.

[KILL HSV]

ok sounds good sk