Avon Tire Issue

[xcarguy]

Hey, guys,

 

Looking for opinions/answers. A friend of mine ran at Road Atlanta this weekend. He has a Stalker with an LS1 and runs the same size Avon tire I run (10.7 x 21.5 x 15). His tires are A15 compound where as mine are A11 (A15 being a bit softer). His tires were new and he ran 23psi for both front and rear. Course was run cw. During the third session, the LR tire began to malfunction . . . see photos below.

 

To help put this in perspective, I ran at MSR Cresson this weekend (Stalker w/ LS6) on my A11 tires; 23psi front and 22psi rear. The end of the day marked my third track day on these tires; 18 heat cycles and four hours run time (three track days with 6 twenty-minute esssions each) for my tires with normal wear. Tire pressures for my first track day were 20psi front and rear and the second was 21psi front and 20psi rear. First track day was run cw and the second and third were run ccw.

 

We discussed blistering as a possibility, but why only this one tire? Even though the LR tire is taking the most abuse, the malfunction seems extreme.

 

. . . your thoughts??? :grouphug:

[jlumba81]

Faulty tire? Have you tired contacting Avon? Tires pressures might be a bit high (low psi would have wear on the shoulders and high psi would have wear in the center). Got any alignment specs?

[xcarguy]

Avon has been contacted. As for alignment specs, don't have any. For what it's worth, the tire was mounted on a straight axle rear end.

[xcarguy]

Problem resolved.

 

Roger Kraus Racing admittedly sold my friend the WRONG compound for his application (honest mistake on their part). RKR cut him a great deal on a new set of A11 compound tires and he is going to sell the nearly-new A15's to someone in the autocross crowd.

 

If anyone needs three nearly-new tires, I'll pass it on.