I think the liability is the real question here. I can do what I want to my bike, I understand that.
But plenty of bikes are sold with illegal equipment, pipes (in some areas) turn signals, improperly mounted plates, etc..
My theory is if a man buys a bike with a car tire and he crashes soon after, not even related to the tire, maybe related to his own action or lack of skill, I wonder if that person has a valid right to a liability or civil claim?
I know every state is different but here, buying a used vehicle from a non-dealer, its buyer beware, know what you are buying. The ink can still be wet on the paperwork but its yours!
It is a topic that I have not seen discussed on any of the darkside threads or websites.
To add to this, what if a motorcycle hits your car or person and is equipped with a car tire? In NC we are a contributory negligence state meaning if 1% of the accident can be contributed to the innocent, they have no claim for liability.
A car tire is a DOT certified tire for road use, as far as I know there is no law that makes this illegal...
Food for thought or good discussion maybe.