Hey guys well I want to know what psi I should set my tires to. The manual says 35 at most. The tires are Yokohama Type S(I KNOW, NOT THE BEST TIRE OUT THERE BUT ITS OK) on the tires it says 51psi MAX. I was told that you should always go 5psi under the max. Is this true? Or should I always fill it up to the MAX? Also which psi do I fallow the 35max on the manual or the 51psi MAX on the tire?
For the best answers, search on this site shorturl.im/avEoo That is because the tire does not tell you the tire pressure you should use - how could it? The tire has no idea if it is mounted on a BMW, a Pontiac or a Toyota so how could a recommended inflation pressure possibly be listed there? All the tire tells you is a safety warning about the maximum load the tire can support at its maximum inflation pressure. That is a safety warning, not a suggestion. Go ahead, read it again. The recommended inflation pressure is the one on the car.
Unlike tires on bicycles (where we inflate to just a few PSi below Max), car tire pressures are inflated to the car manufacturer's specs (ie; your owner's manual or door sticker pressure figures). It is because they know your car's weight, suspension/brake designs. They match with with an ideal pressure to ensure optimum tire footprint on the road. This is because tire manufacturers make tires for a whole range of vehicle sizes/weights, the max pressure figure will say what upper limit the tires can withstand. It doesn't mean you have to inflate it all the way there. If you fill it to the 51PSi, you will have very poor grip and harse ride comfort. You will also experience premature wear on the center of the tire because the threads will bulge up along the center. NEVER fill it to the Max pressure stated on the tire unless your manual says it.
