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Open Track Racing
BFG R1 tire pressures
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<blockquote data-quote="David Hester" data-source="post: 7035976" data-attributes="member: 6794"><p>36 F 34 R is a good place to start cold and work up to 40-42 hot. </p><p>I start at 36/34 and then check again as soon as I come off track. If they are 40-42 great, leave them and let them cool.</p><p>If over 42, I let them cool and then drop another couple of psi when they cool. I DON'T let any air out till they cool back down. </p><p>I've found if you get into the 45 psi region, tires start going away and get greasy. 35-36 psi hot and they seem to wallow.</p><p>I've done that for years when you could actually talk to a BFG engineer at divisional and national SCCA autocrosses.</p><p>Heard the same thing from Kumho and the guys at Hoosier at SEDIV roadraces, although they say the new R6 can run a couple of psi less but still in the 40 psi hot range.</p><p>29 psi cold and you will never get the rears up to temp, unless you are just spinning tires on every corner. Not good.</p><p>BTW we used to start with 10 PSI on Hoosier and Goodyear slicks with the formula ford.</p></blockquote><p></p>
[QUOTE="David Hester, post: 7035976, member: 6794"] 36 F 34 R is a good place to start cold and work up to 40-42 hot. I start at 36/34 and then check again as soon as I come off track. If they are 40-42 great, leave them and let them cool. If over 42, I let them cool and then drop another couple of psi when they cool. I DON'T let any air out till they cool back down. I've found if you get into the 45 psi region, tires start going away and get greasy. 35-36 psi hot and they seem to wallow. I've done that for years when you could actually talk to a BFG engineer at divisional and national SCCA autocrosses. Heard the same thing from Kumho and the guys at Hoosier at SEDIV roadraces, although they say the new R6 can run a couple of psi less but still in the 40 psi hot range. 29 psi cold and you will never get the rears up to temp, unless you are just spinning tires on every corner. Not good. BTW we used to start with 10 PSI on Hoosier and Goodyear slicks with the formula ford. [/QUOTE]
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