What tire size? help!

boostinms3

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2008.5 ms3 mica black
I've decided i'm going to get 18x8 Rota Torque's for my ms3. What tire size fills out the wheel well the best w/o rubbing or rolling fenders?
 
You might be able to fit a 235/40R18 on those without rolling, but it'll also depend on the brand/model of tire (they're not all necessarily standardized to width).

Is the car lowered?
 
235 40 will get you closet to the stock overall height... most people haven't had issues rubbing with them. other options woudl be 225 45 or a 225 40
 
235 40 will get you closet to the stock overall height... most people haven't had issues rubbing with them. other options woudl be 225 45 or a 225 40

will 235 40 rub? I plan on keeping stock height so i want to fill up the wheel well w/out rubbing
 
will 235 40 rub? I plan on keeping stock height so i want to fill up the wheel well w/out rubbing

I've never rubbed with 235/40's on stock suspension even with the trunk loaded to the ceiling. I think it's worth the bit of extra sidewall over the 225/40' and the 225/45's are a bit too tall. I've read of some rubbing with those. Obviously wheel offset needs to be taken into account when talking about rubbing too... too low of an offset and the tire will be pushed out further increasing the chance of rubbing. I think 235/40's will fit perfect on your 8" wide rims.
 
For what it's worth, I'm running 235/40R18 Kumho Ecsta XS tires on 18x8 et50 wheels (RX-8 wheels) with no rubbing on the the stock suspension.
 

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