DOT does not approve aftermarket equipment. Only O.E.Yeah, I'm sure that's DOT approved
if they hit the pavement they will shred before combustion. and they wont combust if they are spinning in 25 degree weather on snow or ice........ thats been tested, the liability alone would kill them if they didnt have that base covered.What happens if you are so stuck that even with these you are still spinning?
Are they fire retardant?
Will they melt if they get to hot?