Review on Slime Elite HD Tire Inflator (Model 40063): Heavy-Duty Performance Boost by Gerardo Goodson

Proven tire 225/55R17 (approx 27" diameter). Pressure dropped to 18psi. It took exactly 2 minutes to get the pressure up to 30psi. 8 minutes, which is less than that recommended maximum run time is 10 minutes. Probably enough for tires up to 30-31". Electronic gauge reads 5psi - set auto shut off to 35psi to measure 30psi with a reliable gauge.