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      02-29-2012, 01:56 PM   #1
sig5x
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Grip increase from running wider (255/275) tires? How much?

I was wondering if anyone had input on how much of an increase (in "g) in grip from switching to slightly wider tires?

It's common to upsize from a 245 fr / 265 rr width to 255/275 or even 255/285.

Assuming the same car, suspension and tire model, how much of a quantifiable gain could this result in?

Aside from the increased rolling resistance and added tire weight, are there any other drawbacks?

Thanks.
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      02-29-2012, 02:45 PM   #2
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Increase in g is exactly 0.1257230829123472395235208
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      02-29-2012, 02:53 PM   #3
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255mm is roughly 4% wider than 245mm
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      02-29-2012, 03:00 PM   #4
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1.21 gigawatts
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      02-29-2012, 03:19 PM   #5
Alex07M3
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I can't tell you in Gs , but I run 255 and 295 on ZCP wheels and it makes a BIG difference , the rear wheels has a lot more grip in acceleration and in cornering ! As for the extra weight(lost of power) , I don't feel it !
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      02-29-2012, 03:20 PM   #6
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seriously op..its negligible.. on a street driven car even more so.
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      02-29-2012, 03:38 PM   #7
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The fact that I use AD08 instead of PS2 probably also help !
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