Sharing info: Running a square tire setup on a boxster

[JoeFromPA]

Hey Topless,

That's an interesting comment. I haven't considered running wheels that are 1.5" difference in width with the same tire.

Do you know anyone who has done that, even with a 1" difference? I have no experience in that, but i'd imagine that's alot different tire support of the sidewall. I'd think it'd be easy to de-bead the 225 wide tire fitted on a 8.5" rim with hard cornering.

I care about wheel well filling out, but only in terms of if something looks silly. I mainly am concerned with:

1. Reducing sprung, rotating mass
2. Enhancing ride comfort AND the ability of the suspension to soak up mid-corner bumpy roads without skittering
3. Perhaps aiding low-end acceleration a bit with less to spin in the rear
4. Balancing out the car more in the turns
5. Being able to get long-life out of the tires and even tread-wear

I'll check out 225/45/17 a bit more....I'd like to go as narrow as possible while still working great and holding on ridiculously in the corners.

[Topless]

[QUOTE=JoeFromPA]Hey Topless,

That's an interesting comment. I haven't considered running wheels that are 1.5" difference in width with the same tire.

Do you know anyone who has done that, even with a 1" difference? I have no experience in that, but i'd imagine that's alot different tire support of the sidewall. I'd think it'd be easy to de-bead the 225 wide tire fitted on a 8.5" rim with hard cornering. (=QUOTE)


Michelin, Bridgestone, Nitto and Dunlop all say that a 225 tire will fit 7-8.5 rims. I defer to their tire knowledge and expertise.
http://www.tirerack.com/tires/tires.jsp?tireMake=Dunlop&tireModel=Direzza+Sport+Z1+Star+Spec&sidewall=&partnum=245WR7Z1SS&tab=Specs