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View Poll Results: What is the best performing size combo for 9"f 12"r 18" rims?
245/305
3
14.29%
245/315
4
19.05%
245/325
1
4.76%
255/305
1
4.76%
255/315
6
28.57%
255/325
1
4.76%
265/315
2
9.52%
265/325
0
0%
265/335
3
14.29%
Voters: 21. You may not vote on this poll

Best performing tires sizes for 18" 9"f 12"r rims

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Old 06-04-2010, 01:12 PM
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utkinpol
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Default Best performing tires sizes for 18" 9"f 12"r rims

Hi,

just want to make a small poll about best performing tire size choices.
quite obviously not all sizes do exist in some brands like hoosiers A6, toyo RA1, etc, but still I would like to see overall consensus of what tire sizes people put on most commonly.

thanks, paul.

PS. As it was noted below we obviously have different cars but I specified exact wheel size in my question, so, hopefully results will have some practical relevance, even if only from a statistical point of view.

Last edited by utkinpol; 06-04-2010 at 03:26 PM.
Old 06-04-2010, 02:29 PM
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mdrums
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Depends on your car...your 997 the best will be
245/305

or

255/315 downsized and lower your car.
Old 06-04-2010, 03:01 PM
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utkinpol
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Originally Posted by mdrums
Depends on your car...your 997 the best will be
245/305

or

255/315 downsized and lower your car.
BTW on auto-x forum i was just told best performance camber setting for C2/C2s will be in area of -4f -3r. Would you concur?
Old 06-04-2010, 04:07 PM
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10 GT3
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When I had my 996 and my CCW Classic Race wheels (18x9/18x11), tire size was very dependant on when tire model I was running. With MPSCs, 235/315s worked best. Corsas (old style) liked being run wide, 255/315. R888s were terrible run wide; but ran great narrow, 235/295.

If I were to run the sizes you are indicating on my GT3, I would go 235/315 to start.
Old 06-04-2010, 06:10 PM
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wanna911
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I was going to say it has a lot to do with the sidewall construction and grip level of the tire you are running. I don't think there is a one size fits all for every tire. I like shorter sidewalls on anything with sidewalls softer than a full slick. Big sidewalls are mushy on tires like NT-01. Especially on heavier cars.
Old 06-04-2010, 06:18 PM
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TRAKCAR
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FWIW, I run 255 and 335 or 245 and 335 on those rims.
Old 06-07-2010, 11:49 AM
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utkinpol
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is here anybody who could confirm if shaved kumho v700 265/35r18 on 9" wide rims with 50mm offset fits into 997 narrow body cars? shocks are stock but LCAs are from GT3 so wheel is pushed out a bit more than stock - does it give enough clearance to fit 265 tires?
Old 06-07-2010, 01:01 PM
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mark kibort
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+1

Originally Posted by TRAKCAR
FWIW, I run 255 and 335 or 245 and 335 on those rims.
Old 06-09-2010, 06:00 PM
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atr911
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It should be noted that the 997 runs different ratios than the 996. 996 is same front back. 997 is larger rolling diamater rear by about an inch.



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