One of North Park's combined tire-and-mechanic operations on the University Ave corridor, Joel's Tire Shop at 3578 University Ave pairs tire sales with on-site mechanical service in the 92104 ZIP code. Vehicles that fail a California Bureau of Automotive Repair emissions retest after engine work can head to North Park Smog Test Only on Bancroft St for an independent test-only inspection. The in-house mechanic bay handles brake jobs, wheel bearings, and basic drivetrain repairs alongside tire mounting and balancing. For deeper engine or transmission diagnosis beyond the shop's scope, Ron's Auto Clinic on Alabama St runs full OBD-II and oscilloscope-level electrical testing. Joel's manages full-vehicle tire-and-brake packages where all four corners receive new rubber, rotors, and pads in a single appointment.