car tire pressure required 35psi , but the tires I has a max of 51 psi, so how much psi should i put in tires?

You should follow the car manufacturers recommendations which are found on the label attached to the right (or left) door jamb. They are also listed in your owners manual.

You follow the guidlines of the vehicle manufacturer, the Rubber Manufacturers Association, the Tire Industry Association, the company that made your tires and what it actually says on the sidewall (you didn't read the fine print, did you?) and put in what the vehicle manufacturer says.

So what if the tire has a maximum inflation pressure of 51 psi? What does that have to do with the pressure that should be put in that tire when mounted on your particular year/make/model of vehicle?

Absolutely nothing.

Maximum is not the same as recommended. What it says on the sidewall is merely informational - this tire can carry X amount of weight at the not-to-exceed-so-you-don't-kill-yourself maximum inflation pressure of X psi.

On a vehicle that recommends 35 psi inflating the tire to 51 psi will reduce traction and cornering capability, increase stopping distances, reduce ride quality, increase tire wear and make the tires more susceptible to damage from road hazards such as pot holes.

For once, the majority of folks answered this question correctly, the notable exception being Mark W, who clearly does not understand that correct inflation pressure is determined by tire size, not brand or model. It doesn't matter if you have OEM or replacement tires on the car so long as they are the same size the inflation remains what it says in the door.

are they the original tires ? if not then the sticker on the door does not know what kind of tires are on the car it is just a sticker they must be a heavy duty tire to have a max that high. running the tires at the max press. will give you the longest tire life but a rough ride so 40-45psi should make everybody happy

all tires the same size do not mean they need the same psi it depends on the side wall thickness and the ply of the tire expl. a 15 inch 4 ply highway tire only takes 35psi to make the tire ride flat on the ground a 15 10 ply LT or truck tire needs more psi to make the whole surface touch the ground mark f I'am also a tire retailer I hope u explain this to you're customer's better and do not tell them every tire only need's 35 psi just because of the size. the company that built the tire spends alot of money on research to determain the best life for there tires

Contrary to what some people think the pressure on the side of the tire is not the pressure for your particular ride the pressure for your car is on the sticker on the door jamb in this case 32 psi

Go with the manufacturer's recommendation of 35 PSI. The max pressure stated on the tire is just that - maximum rated sustainable pressure at a given load.

Question #1=Who makes the tires, the car manufacturer? Of course not, but then why should they be the authority on how to best take care of a product they don't make? Seems when the tires fail because of overheating they blame the tires or the owner of the vehicle for not having proper inflation which causes tires to FAIL because they can't carry the weight of the vehicle, which brings me to Question #2= Why don't car manufacturers DESIGN a safer size tire to handle the total possible carrying weights "to include" empty vehicle weight, capable weight carrying of passengers (example 5 for a sedan) at adult levels(they are only held to a standard of the driver), and also the possible carrying weight of the rear trunk compartment which can carry much additional weight. Put them all together on the tires that are designed for that vehicle makes the tires non-supportable of the total weight(curb weight) causing overheating and possible failure. That is not the tire's fault because that size can only carry what it can carry, a known factor before design and supported on the sidewall of the size tire. Combine weight and lower inflation and tires fail, certainly wearing out before their time on inside/outside edges. Tell me you haven't been victim to that, and maybe been told by a mechanic that it was mechanical failure or alignment wear? Tires contain air and will give under added weight like your legs give when you carry kids, grandkids, or added weight on your shoulders. On tires, the center tread folds up into and toward the rim while the sidewall overflexes putting extra pressure on the edges and they wear out quicker plus overheat and possibly fail(fail meaning the rubber separates from the cord body causing escaped air bubbles and rubber peeling possibly with tire blowout). If tires are doing this, they are not able to carry the weight which common sense tells one that they are mis-designed, improperly maintained, or both, but not the fault of the tire. Like you, it can only do what it can do by it's strength WHICH is tire size, recommendation of pressure/strength for the CAPABILITIES of the vehicle for weight carrying. Why would they design tires of the size they put on? Simply. they build a lot of vehicles that have four tires(maybe a fifth which also answers why they gave us the 50-mile spare Donut tire in place) If they design and put on "proper" safer tires in bigger sizes, it costs them much more money per vehicle they must absorb or pass on to us. Thus, Safety be damned and confuse the issue so as not to be transparent. That designer gets a bonus and we get the shaft. Not sure of the effects on tires of air pressure/psi? Check charts from the tire and rim association giving carrying weights per psi. Figure out the curb weight empty of your vehicle and add the weight you carry or can carry. See if your tires match up and why air pressure is important. Common sense will tell you who to believe in this article when you have the information to ask and ponder.

32-35 psi don;t put that 51 psi you seen in ever. that 51 is the max when the tire will blow.my tires are at 35

You only add the amount of air that is stated on your drivers side door, if it states 35, you only add 35 when the tires are cold, like 8 am in the morning before you drive off. Now the tire manufacturers imboss this on the tire so if an owner with a inflation rating states 50, he can add these to his car. Understand ?

35psi is the cold tire pressure, 51psi is max tire pressure. as you drive the tire heats up and the air expands, this is thermal dynamics. put 35psi in the tire only when it's cold or it will be an inaccurate reading. you also could just move up to nitrogen and not worry about expanding gas all together.

35PSI

LOAD IT UP, PUT IT THROUGH IT PACES, Make everything and the load excessive.........Tires safe MAX ? 51 PSI

You should run 35 PSI

'BRILLIANT'!!!!