Jack
This spring i noticed my brand new front avon tire with this condition. I bought and had it installed at Sturgis last august. I called avon and they made me get a new one from my local dealer and have the dealer assist with the warranty.
I have now just heard from my dealer that avon has agreed that there is a problem and will reimburse me. I will be going to the dealer tomorrow to see what I will get back.
Original tire in sturgis 90 US and 90 for install.
New tire here in Canada at my stealer...installed 230 Can.
My tire was about the same year model...it wasnt old by any stretch. Avon said that this sometimes happen if the tire is exposed to unnatural products...oil, freon, ozone, antifreeze, etc , while in storage.