Rzeppa
Rising Sun Member
75mph with 33s according to the gps
Whenever I'd go to cruise Moab, I'd write down the odometer reading at mile marker 100 and then write it down again at the Utah line. On new 33s, my 60 was typically around 13% low, thus if the speedo read 75 the actual speed was 75*1.13=85. This would typically diminish a bit each year with tread wear until new tires and start over. This of course assumes the speedo and odo calibration agree with each other.









