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Old 08-07-2003, 01:39 PM   #1
Scooby Specialist
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Join Date: Apr 2001
Chapter/Region: South East
Location: Boone, NC
2005 STi

Default Proper tire size?

I've been running 225/40's on my 18" Prodrive P1s. I've heard of people running 225/45's, and 235/40's too. I think my rims are 7.5" wide (could anyone confirm?). Is 225/40/18 what I want to stick with?


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Old 08-07-2003, 02:03 PM   #2
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225/40-18 is correct
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Old 08-07-2003, 08:11 PM   #3
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Location: St. Louis, MO
2005 Lotus Elise
Yellow, #94 SS


225/45 is the "right" tire size for a 17" rim, that might be where that number comes from. 235/40 is another reasonable option for 17" if you have wide enough wheels.
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Old 08-07-2003, 08:42 PM   #4
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Use this tool to check out the different sizes yourself:


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