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View Full Version : need a favor from a 4.2p driver with stock tires.

pagpc
06-24-2007, 07:26 AM
would one of you with a 4.2p with 265x50x19's tell me your speed at 2400 rpm, please.

peter
MarkItZero
06-24-2007, 10:41 AM
pagpc
06-24-2007, 12:20 PM
MarkItZero
06-24-2007, 12:27 PM
which results in about a 4 mph error. Confirmed via GPS and mile marker signs. You're speedo may show a faster speed as a result of a smaller diameter tire at the same RPM but if you compare to GPS I think you will find error in that reading.
mksap11
06-24-2007, 12:43 PM
MarkItZero
06-24-2007, 12:47 PM
mksap11
06-24-2007, 12:47 PM
MarkItZero
06-24-2007, 12:50 PM
mksap11
06-24-2007, 12:52 PM
Jusforfun
06-24-2007, 07:14 PM
Jusforfun
06-24-2007, 07:18 PM
Jusforfun
06-25-2007, 11:43 AM
pagpc
06-26-2007, 12:48 PM
mksap11
06-26-2007, 12:55 PM
This tire size calculator will show you the differences in speed (among other things) as you change the overall tire dimensions. Stock wheel sizes from Audi are within 1-3% of each other IIRC<ul><li><a href="http://www.1010tires.com/TireSizeCalculator.asp">http://www.1010tires.com/TireSizeCalculator.asp</a</li></ul>
pagpc
06-26-2007, 03:25 PM
mksap11
07-04-2007, 05:39 PM