Thank you, but I'm going to pursue a warranty on this. I should have another tire shipped to my door for freeI have a brand new Shinko 777 front tire for sale. $60 shipped to your door...
Chunking is the term used to describe missing sections of tread from a tire. It almost looks as though the tread has been sliced or torn off in chunks from seemingly random areas.
Tire damage like this typically occurs for one of two reasons. The first is related to suspension problems, such as a bad shock absorber making it impossible for the tire to maintain constant contact with the road. As it bounces up and down on the pavement, the force of the impact can cause tread chunking. A second common cause of chunking is related to heat — specifically, not warming up a tire before subjecting it to severe stress on an autocross or road course.
Chunked tires are not immediately dangerous, but their lifespan has been significantly shortened. The more tread that’s missing, the less grip they’ll have on the asphalt, which in turn can lead to unpredictable behavior under braking, in inclement weather or when cornering.
The tire was down two PSI from when I had it mounted in April, so it holds air well.Has the tire always held air, or have you found it to be quite a bit low at different times?
Found this at Napa:
3 Tire Damage Warning Signs That It's Time to Replace Your RubberNAPA Know How Blog
I've seen this most often on large truck tires, those trucks never see autocross as mentioned below. Bad shocks? I don't think many companies replace shocks on their trucks But searching the term 'tire chunking' shows it happens somewhat often, even to the top brands.
I live in Illinois. We don't believe in paving roads until there is more potholes than smooth areas! :grin2:Any irregular road surfaces around you?