Wheel issues

[thstone]

Originally Posted by jcslocum

First of all, the Box was not designed to have the same sized tire at all 4 corners. It's designed to have a stagger, front to back.

Yes and no.

Yes, the stock setup is staggered.

But no, the car is designed to accept a 8.5" wheel with a 255 width tire on the front without rubbing. Jay is correct that the racing guys do this all of the time without any problems.

The reason that the car doesn't come with a 255 square setup from the factory has to do with handling, not rubbing. The staggered setup creates significant understeer which Porsche feels is a safer handling characteristic than neutral or oversteer. A stock Boxster running 255 square tires with the factory sway bars will slide the rear end around like a drift car - but they won't rub. (Racers get the car back to neutral handling by using non-stock adjustable sway bars).

Thus, the likely problem is that the front wheels have the incorrect offset which is causing the 255 width tire to rub.