2012White5.0

I bought a set of stock boss 302 wheels, and need help with tire size. 19x9 Front, and 19x9.5 Rear. I don't like the factory size choice since they look too small, and the diameter of the tire on the back is smaller than the front.

I like the sidewall height on my stock 245/45/19, but want to get a better performing tire. I know that I want 275/40/19's on the back, and this will keep the diameter the same as stock. If I go with the 255/40/19 up front the diameter is smaller than stock. Can I run a 245/45/19 up front on the 9" rim without issues? This would give me a matching diameter tire on all 4 corners. I also don't want to mess with speedometer calibration.

I've found a few tires that I like that state they have a 9.7" width, and an 9.1" tread width.

1slow67

I ran a 245/45/17 on a 17x9 and run a 245/40/18 on an 18x9 right now. So I don't see why a 245/45/19 wouldn't fit.

Norm Peterson

I don't know what you've done about this over the past month, but yes, a 245/45-19 tire can be legitimately mounted on 9" wide wheels (it's a max-recommended fitment). The only caution I have is that it may appear to be slightly stretched, which as a matter of appearance bothers some people. But the improved cornering response that comes with it is kind of nice and you might get spoiled.




Norm