Originally Posted by Mike1Six
That's was actually a little bit helpful... It appears 235/55R-17 's may fit the wheels. Has anyone ran with this size on the stock wheel?
They'll fit I'm sure, but not without consequences. I remember reading on the forum that wider tires on a smaller rim can sometimes lead to excessive sidewall flex, so the tradeoff might not be worth it if handling and body roll are important factors in your consideration.
For some reference I run a 255/45/R18 on an 8.5 and I can tell you that I would rather not run anything larger than that without upgrading to a 9" rim. As far as speedo corrections, my factory speedo calibration was off by like 2-3 mph anyway, and after changing my wheels/tires I never saw a noticeable change in error margin as my overall diameter didn't really change a significant amount.
If it was my car, I would save the money as 235s are just as wimpy looking as stock rubber (trust me, mine came with them) and put that money towards a new wheel/tire package with something around or bigger than 245s. American Muscle has some nice options in that category.