What PSI and CFM should I look for to inflate truck or SUV tires?

For light-truck and SUV tires up to about 33 inches, specialist overlanding threads generally point to compressors rated to at least 120-150 PSI with a duty cycle of 25-30 minutes or better. For 35-inch tires or heavier off-road use, reviewers in the overlanding communities push toward units with 150 PSI max pressure, 2+ CFM free-flow ratings, and 100% duty-cycle claims.