The tire on my Blazer was low so I went to Harbor Freight & bought this comperssor cause it looks like the Vair one. So I timed it. The tire is a 31x10.50x15 & had 5 psi. It took 6 min to air it up to 35 psi. Not bad considering the weight of the truck. I paid $50 bucks. I guess I have to deflate my 35's & see what it takes to air up all 4
Edit: This is at sea level