fossilfuel Posted June 16, 2009 Report Share Posted June 16, 2009 I had a spectacular low side at Barber during WERA race practice a few weeks ago. I was not on my normal "Dunlop race slicks". I was in a bind and a friend ordered Michelin Power One V-profile. The manufacturer states the cold tire pressure is 31 psi. Michelin does not give hot tire pressures. I had put about ten laps on the tires. I ususally try to get about three laps on a new set before I consider them "scuffed" in. So the front probably was about 36 psi. I was passing on the outside using "maintenance throttle" when the front just went, no warning at all. Unfortunately for me the bike caught on the track, went up in the air and flipped twice before hitting the ground. I had a front row seat. I normally run Dunlop slicks with hot tire pressure of 31 psi front and 30 psi rear. I have been to Barber probably 35 times and never had an issue in turn two. I know, there is always a first time. I love my Dunlop tires and after the crash all I could think about was the tires because in my mind it was unlikely after all the riding and race schools I have been to that I caused the low side mid corner. The questions that run through your mind: Was it a light front end, a seam, marbles on the track, to much pressure on the bars, tire pressure or unfamiliar tire profile? These are the kinds of questions you ask yourself after the fact. It is really hard to do analysis when your trying to pass and maybe that is where more errors occur because you get tunnel vision and lose "feel" I know that three other guys low sided in turn 2 at Barber and two were on Michelin Power Ones with the "V" profile. When I came back in to the paddock several racers commented on the tires. One guy said " He only new two top racers that could ride on them". I talked to the Dunlop tire rep and he said "off the record" you know what he said. So, I guess it is hard for me to admit that I made a bad input. I mean I was smooooth and still can't believe it happened but....Do tires make a difference? Does 31 psi hot vs 36 psi hot make that much of a difference? Does tire profile make a difference? Quote Link to comment Share on other sites More sharing options...
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