[QUOTE=IMDSailor;1469177]The question I sent to Mastertow;
Hello, Iím hoping you can shed some light on to the reason for this uneven tire wear. I purchased this dolly, 80THD, last year. It had sat on the dealers lot for a number of years, I believe itís a 08, but had never been used. I tow a 04 Chrysler Sebring with the dolly. We towed for about 3000 miles in the year. Both the left and right side are showing this wear. The picture is of the left side (While looking back) or the passenger side ( looking forward).
Oxidation, not tread wear
According to rubber industry research, trailer tires need to be replaced after 3-5 years of use, even though they usually appear to have plenty of tread left. Unlike your carís tires, it isnít miles of driving but oxidation of the rubber that wears out the tire. Mostly, a trailer tire sits in one spot for days or weeks at a time, and may travel only 10,000 miles (or sometimes a lot less) per year. UV radiation from sunlight and ozone from exhaust cause exterior damage to the sidewalls, and oxygen from pressurized air creates unseen damage deep inside.
In other words they skirted the problem you have completely,kind of a non-answer. I wonder what their answer would have been if you had told them the tires were only 2 years old ?