No. of Recommendations: 2
Okay, I'm bored and playing with Excel. Here are the possible
combinations of tire width/aspect ratio on the 16 and 17 inch rims.
The diff column is the percent change in the diameter/circumference of
the tire. You'd probably prefer to have that be positive rather than
negative, since the overall diameter will decrease as the tire tread
wears. Remember, +diff and you're going faster than the speedometer,
-diff is slower than what the speedo says.
The closest overall combination is the 215/35 on a 17" rim, but it's up
to you if you want to go that low profile. Higher cost, generally
better handling, reduced comfort. Given the choice, I'd always go up a
width, and try to offset with a lower profile. I pushed my GS-R from
195/55 to 205/50 on the stock rims with no problems.
width ratio rim total diam. diff
stock 205 50 15 23.07086614 0
205 40 16 22.45669291 -2.66%
205 45 16 23.26377953 0.84%
215 40 16 22.77165354 -1.30%
215 45 16 23.61811024 2.37%
205 35 17 22.6496063 -1.83%
205 40 17 23.45669291 1.67%
215 35 17 22.92519685 -0.63%
215 40 17 23.77165354 3.04%
If anyone wants a copy of the excel formula or spreadsheet to play
around with, just post or drop me an email.
Gotta go play with the numbers for my car.....hmmm, if I had 18s
instead of 15s....
Hope that helps,
Jeff
