Lowering TV tire pressures
For those of you with diesel HD trucks that lower their tire pressures when not towing, what do you set them to? My Ram calls for 60psi front and 80 in the rear. As most know, this gives a pretty h...
Forum Discussion
wilber1 wrote:
Load charts are about load, not wear. You can have two different vehicles, weighing the same using the same tires that will need very different pressures to give optimum performance because they are very different in other ways and uses. The tire manufacturer doesn’t know how the tire will be used in every case, only how much weight it can support at a given pressure.
For a given class of tire (Class 3 - 5 trucks), how much can the intended use differ? I'd imagine A Ram 3500, vs F450, vs Silverado 3500, all towing a 30k horse trailer, or carrying 5k lbs of cement in bed, would put very similar loads on a tire - mostly vertical.
NASCAR is a whole new extreme, where a 3000 lbs car can weigh 10,000 lbs on a steep enough embankment, and generate over 7000 lbs laterally. Therefore the tire loads are significantly different than say, a street going Camry.
