What size tire should I be getting
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What size tire should I be getting
My new rims are 18 x 8
What exact size should I be looking for?! 225/40/18 or 235/45/18 or 235/40/18?! I am planning to do some autocrossing.
thx
What exact size should I be looking for?! 225/40/18 or 235/45/18 or 235/40/18?! I am planning to do some autocrossing.
thx
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Originally Posted by hueman
good question... there's been a lot of arguing in this forum recently about tire sizes and it's making me very paranoid. i have the same size wheels en route and am freaking out over this.
Here's what I found out by searching.
Your choices are
225/40/18
235/40/18
245/40/18
255/35-18
The stock wheels have a 25.32" dia. If you use
225/40-18 = 25.086" dia or about 1/4" smaller.
235/40-18 = 25.40" dia or about .08" larger
245/40-18 = 25.72" dia or about 3/8" larger
The smaller diameter will probably allow quicker accelation, but will cause a bit more revs per mile.
The larger diameters will slow the acceleration a bit more (the bigger the slower) and will give you less revs per mph, but will also show less speed than you are actually travelling.
If it were I doing the choosing, I'd go with 235/40-18 because it's the closest to the stock diameter and the same width as stock.
Alot of people tend to have 245/40/18 with 18x8 wheels
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