It probably stems from the fact that, although neither under- inflation nor over-inflation is good for the tire/vehicle, over-inflation is generally SAFER than under-inflation. Under-inflated tires run warmer, have shorter service life, and are more prone to blowout. After the legal debacle surrounding the Ford Exploder issue with Firestones, mfrs will lean toward over-inflation.
I always add a few pounds to our cars in the fall (both TPMS-equipped and not). I do not let air out in the spring, however. By the next fall, all tires are a few pounds low again. No, I do not run Nitrogen, except for the 79% or so that is freely available in the air.
I always add a few pounds to our cars in the fall (both TPMS-equipped and not). I do not let air out in the spring, however. By the next fall, all tires are a few pounds low again. No, I do not run Nitrogen, except for the 79% or so that is freely available in the air.
