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Open Track Racing
BFG R1 tire pressures
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<blockquote data-quote="TXPD" data-source="post: 7043904" data-attributes="member: 46922"><p>David: Our hot pressures were 38-39. </p><p>Yes, we are running the ARRC enduro again. We will have two cars entered for that. The Cobra R and my '08/'09 magazine project, a '99 Cobra Bondurant car.</p><p></p><p>I may run one of the cars in the ITO sprint race just to get some practice for the enduro. There will be 500-600hp cars running in the sprint in ITO and no point in racing them.</p><p></p><p>I think we will run the October VIR SARRC in AS for the first time. Try and get a base line on that question. 3680 is ridiculous. Tom Ellis is going to run the ARRC enduro with us and he told me today that the weight penalty is prohibitive.</p><p></p><p>Cassidy: The reason for the 31psi in the right front and 29psi in the LF at Road Atlanta is to balance the tire pressures when they heat up. RA has several high speed right handers that had our left front 2 to 4psi higher than the right front. That caused us to have an evil loose in condition that was VERY uncomfortable at Road Atlanta. Without that the right front pressures are two to four psi higher than the left front and the car gets real nervous under hard braking. </p><p></p><p>We have found that the tires grip better when cool and the better grip at that time washes a good deal of the unsteadyness til the pressures build up to even. Then when the tires are hot and not gripping so well, the pressures are even and the car handles much better.</p><p></p><p>As for going out with even pressures, my car tends to be a tick loose. I've found that raising the rear tire pressures is a sure fire way to tighten a car up. However, my preference after finding the new pressures working, is to then change the rear shock settings to mimick the increased tire pressures and then reduce the pressures back to soften the rear tires for forward bite.</p></blockquote><p></p>
[QUOTE="TXPD, post: 7043904, member: 46922"] David: Our hot pressures were 38-39. Yes, we are running the ARRC enduro again. We will have two cars entered for that. The Cobra R and my '08/'09 magazine project, a '99 Cobra Bondurant car. I may run one of the cars in the ITO sprint race just to get some practice for the enduro. There will be 500-600hp cars running in the sprint in ITO and no point in racing them. I think we will run the October VIR SARRC in AS for the first time. Try and get a base line on that question. 3680 is ridiculous. Tom Ellis is going to run the ARRC enduro with us and he told me today that the weight penalty is prohibitive. Cassidy: The reason for the 31psi in the right front and 29psi in the LF at Road Atlanta is to balance the tire pressures when they heat up. RA has several high speed right handers that had our left front 2 to 4psi higher than the right front. That caused us to have an evil loose in condition that was VERY uncomfortable at Road Atlanta. Without that the right front pressures are two to four psi higher than the left front and the car gets real nervous under hard braking. We have found that the tires grip better when cool and the better grip at that time washes a good deal of the unsteadyness til the pressures build up to even. Then when the tires are hot and not gripping so well, the pressures are even and the car handles much better. As for going out with even pressures, my car tends to be a tick loose. I've found that raising the rear tire pressures is a sure fire way to tighten a car up. However, my preference after finding the new pressures working, is to then change the rear shock settings to mimick the increased tire pressures and then reduce the pressures back to soften the rear tires for forward bite. [/QUOTE]
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