my friends and I, use these wheels to mount our slicks for amateur racing . we never have broken one(and we run brushlless 9T motors with lipos) of these and they are acetone resistant . So you can unglue the tires from the C.A. glue when they are worn and reuse the same wheels with the new tires. This is an excellent buy and with a very good price for 8 wheels . I think thats called a bargain.