We sold and installed PacBrake and their products for years.. I can tell you that the small air compressor used by Firestone, PacBrake, etc are nice for the kids tires... your air bags, exhaust brakes but don't have the duty cycle for a vehicle tire... they are designed to run at a 15% duty cycle.... it would just overheat and die.... I picked up a simple larger capacity compressor for under $50... actually I've never used it.. but it would pump up a truck tire... Hope this helps..