So I bought Roctane XD tires about 11 months ago. I really like the tires. After my last ride I noticed my machine developed a bumpy ride. This morning I check the roundness of my tires simply by jacking it up, applying some throttle and sitting a can or something stationary by the tire to compare the distance between the can and the tire tread as it rotated. One rear tire is real bad and the front tire on the same side is pretty bad. Kind of odd if you asked me. Anyways, I submitted a claim to STI for warranty since they have a 2 year period on them. I'm hoping they step up and warranty them. As I was getting pictures of the serial numbers to send them, I noticed this (picture attached). I didn't realize this back tire was rubbing the concrete as I was check the front tires and when I turned it over to get the serial number, you can obviously see the low spot that didn't rub at all.
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