Someone made an inquiry about tire pressure in a car. Does not matter to the manufacturer of the vehicle?

Question

Manufacturers put a specific tire pressure for their vehicle. May I include that manufacturers do not check or care about the tire that they put on their vehicles. They have a contract with that company for that vehicle. The tires themselves are rated by the company their made from, not the vehicle they are going to go on. I sold Jeeps for 3 years, and am a Jeep owner. It does not matter about the vehicle, it matters about the tire. I will also add that a major tire company that starts with G and ends in R is a very bad choice for the Jeep Wrangler. I've put only 40 K on this set and they have no tread left. You morons that believe that tire pressure is set by the car company's recommendations.....your wrong it's set by the tire company.

Answer 1

I agree whole heartedly and thanks for setting that straight.
I too have owned Jeeps, four of them and they all came from the factory with G-------S that didn't wear well at all. They developed odd cupping on the tread and howled like big mud and blood tires. They at least had great straight line traction in mud and snow. I switched to Coopers and problem solved. The recent one a Jeep Liberty, has highway type tires on it, can you believe that? During a recent snow storm, it didn't want to turn in the wet snow, just kept going straight. I gotta get some better tires before the next snowfall!!!

Answer 2

You're clueless, but there's no sense arguing the point with you.

Engineers from the auto manufacturers DO work with the tire companies in designing or selecting the tires for a vehicle line as well as determining the tire pressure that is recommended.

The proper tire pressure is based on the load that the tire is carrying on the specific car line. The pressure molded into the sidewall is the MAXIMUM pressure recommended by the tire's manufacturer at its full rated load.

Most tires are rated at a load capacity somewhat higher than the actual load that they will carry on the specific application to provide a margin of safety for vehicle overload conditions that are beyond the vehicle manufacturer's control.

At the high end, a single tire line is developed for a single vehicle model. In that case, the auto engineers and the tire engineers collaborate very closely to get the desired ride and handling characteristics.

If you got 40k out of a set of Goodyears on a Wrangler you did very well indeed. But why the hell did you run them until there was no tread left?? Guess YOU'RE the moron, eh?

Answer 3

Actually, tire manufacturers work together with the vehicle manufacturer to determine the best tire pressure for each application. Contrary to what this idiot says they actually work very closely together.

Sometimes however, they don't listen to each other and you have events like the Explorer tire recalls where Firestone recommended a pressure of 35 psi in the rear to carry the weight of the vehicle but Ford ended up putting 26 psi on the door jamb to solve a handling defect in the vehicle. Hundreds of blown left rear tires later some 30+ million perfectly good tires end up being recalled and sent to the scrap heap.

BTW

OE tires are NEVER chosen for long wear. They are chosen for things like ride comfort, noise and in particular, low rolling resistance, but never because they will last forever, so don't expect them too.

Answer 4

Correct! Tire Manufacturers set the pressures. That is what they do.....manufacture tires. Car Manufactures put their recommended pressures on the LF door jamb tag to achieve the 'perfect' ride.

Answer 5

you shouldn't use goodyears on a vehicle like that. Go for continentals. THey are high quality. you do have to replace them often.

Qoute: "only 40 k"
That is expected, especially if you don't pay any attention to them.