11-15-2017, 11:28 AM
On the issue of variations in readings of tire pressure gauges, this summer Tom and I compared our tire gauges in Ruidoso, NM. Between our 3 tire gauges and his new TPMS readings, we had variances of about 8 psi (lowest to highest readings) at 110 psi as I recall. So compared to temperature and altitude changes, individual tire pressure gauges still seem to be the biggest variable.
Coming back from Montana this summer, I had an elevation drop of over 5,000' between southern Colorado and Austin for a decreased tire pressure of roughly 3 psi due to altitude. Temperatures changes were actually not much different but in the opposite direction as it was still pretty warm in Colorado in early September.
Coming back from Montana this summer, I had an elevation drop of over 5,000' between southern Colorado and Austin for a decreased tire pressure of roughly 3 psi due to altitude. Temperatures changes were actually not much different but in the opposite direction as it was still pretty warm in Colorado in early September.