It happens occasionally that one can notice damage to tires, such as a loose side flank or an airless twin tire on a truck on the highway. Once I could also see and smell the “smoky flag” of a trailer fixed brake. That was still when the trailers had a crank with wire rope at the back. Should one draw attention to such defects the driver?? He will not change the tire with the defective side flank immediately anyway. ifen was able to continue with the only half nitrogen charge and to serve the last customer. screwdriver