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Be very afraid...
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What goes on a 7.5" rim? 245-255's? I think you're gonna end up rubbing bad in the well unless you have some serious offset. Stock rims are 6" and can carry up to 215-225. Anyone use 7.5"?
 

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was up
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mine are 7.5" wide but i have 16's with 205/55 so i dont think they have to be 245s like creature said. but 215/45 17 should be fine
 

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Registered
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Discussion Starter #6
Hey thanks guys for your help. I got some more dumb questions though. What does the first number stand for? e.g. 215 What does the second number stand for? e.g. 45 Thanks again.
 

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founding father
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1,952 Posts
the 1st number is how wide in millimeters the tire is acrossfrom shoulder to shoulder. so on a 215 the cross section width is 215 millimeters wide. the 2nd number is the % of height the sidewall is in comparison to the width of the tire. so a 215-45 would mean that the sidewall height is 45% of the width of the tire.
that said now you can realize that not all 35, 40, or 45 series tires are the same height. obviously like on some super cars out there that will wear something like a 315-30-18 tire on the rear, even though it is a 30 series tire it is going to have a taller sidewall height than say my 215-35...since 30% of 315 is more than 35% of 215.
Get it?
 
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