I just got this 2007 LBZ crew 4wd and it has 285 Dunlop Rover Radials ...
pretty stiff, even at 55psi ... and get this, the speedo is off by 6 to 8 % (reads 50 is really 53, reads 55 is really 59). The 'really' numbers are from my Garmin which was 'right on' in a previous truck.
I thought maybe...