These two tires and their wear pattern bring up a question about the TPMS system and the ability of an independent shop even being able to access and therefore change the computers factory set target pressure for the tires to a pressure different ( lower that is ) from the manufactures door jamb sticker which is only indicating what the pressure should be for the maximum allowable axle weights of the truck for example. I realize older vehicles were electronically accessible by a proper two way scan tool but am hearing that the GM global B system is now allowing some shops with their tools ( and could be a Snap On etc ) to gain access to much of anything within the vehicles computer system. So my question is, have you run into this with the newer GM trucks ?. I am also told that some dealerships don't want to lower the tire pressure alarm value in vehicles and if I am correct in what I have been told of non GM factory scanners with their current updated system not being able to access this or really any systems in the vehicle, that is a very bad sign ( the whole John Deere right to service court case for example ). But yes, this all boils down to both tire shops and dealerships automatically jacking up the tire pressure to the door sticker value rather than what the customer may tell them they want to run their tires at because they have done their homework and weighed their axles and used the tire inflation/weight chart and know what pressure to run. Driving around with a near empty 1 ton truck with the rear tires at 80 pounds when 35 pounds easily supports the weight with a safety margin, that is what wears tires like your example or worse. I'd be interested to hear your take on my comments and questions !
These two tires and their wear pattern bring up a question about the TPMS system and the ability of an independent shop even being able to access and therefore change the computers factory set target pressure for the tires to a pressure different ( lower that is ) from the manufactures door jamb sticker which is only indicating what the pressure should be for the maximum allowable axle weights of the truck for example. I realize older vehicles were electronically accessible by a proper two way scan tool but am hearing that the GM global B system is now allowing some shops with their tools ( and could be a Snap On etc ) to gain access to much of anything within the vehicles computer system. So my question is, have you run into this with the newer GM trucks ?. I am also told that some dealerships don't want to lower the tire pressure alarm value in vehicles and if I am correct in what I have been told of non GM factory scanners with their current updated system not being able to access this or really any systems in the vehicle, that is a very bad sign ( the whole John Deere right to service court case for example ). But yes, this all boils down to both tire shops and dealerships automatically jacking up the tire pressure to the door sticker value rather than what the customer may tell them they want to run their tires at because they have done their homework and weighed their axles and used the tire inflation/weight chart and know what pressure to run. Driving around with a near empty 1 ton truck with the rear tires at 80 pounds when 35 pounds easily supports the weight with a safety margin, that is what wears tires like your example or worse. I'd be interested to hear your take on my comments and questions !