I aired my Sequoia up yesterday from the sub-30 psi that it was at for some unknown reason to 40 psi. When I backed up the driveway and spun the rear tires I knew that the added contact pressure had resulted in superior traction (for leaving black marks at least) and it was clear that the tire was crowning as expected so I dropped them back to 35 psi. The Smittybuilt compressor did an efficient job or airing up the 265/70/R17 tires to 40 psi.
