In a message dated 5/10/99 8:40:52 PM Eastern Daylight Time,
talon-95@worldnet.att.net writes:
<< I do agree with the 2-3%. I tried swapping between my R1's and D40M2's
last
year at Salina. I got within 1-1.5 seconds of the R1's with the D40's on a
35-40 second course. The D40's are/were a good tire, but not the best. >>
If you look at the RTP index and calculate some comparative times
between ST and STR [where the tires are the only difference] you find that
the fellow who created that particular index, presumably from some data
gathered from a number of events, thinks something around 4.5% is about right.
Ray
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