Max tire pressure vs. safe pressure for car?

Tire pressure sticker info is for a vehicle that is loaded with passengers and luggage to the maximum limits and with a full tank of gas. Otherwise, a lower tire pressure is preferred for riding quality and tire wear. 

Anon: your statement is irrelevant. . Many nose wheel tires are 65  PSI,  many  mains are 300. And,  filed with  Nitrogen. The maximum is not even mentioned on aircraft tires. . 

GA tires are usually much lower. 

Adjust your tire pressure according to the driver door's sticker, every car has different setting, that is the safest way to get maximum handling and tire life. at the bottom is the spare tire pressure 

The max pressure shown is that which the tire carcass is tested to, and is nothing to do with what the car requires. The latter varies from car to car, even with identical tires, and the one for your car is what you must use. 

The only time the max pressure is relevant is when overinflating the tire to seat the beads.  It isn't even shown in most countries as it is pointless.  Using it on the road will result in very poor grip, poor wear, increased risk of blowout and a hard ride.

NEVER USE MAX PRESSURES when the Tyre gets hot the Pressure goes up above max pressure and because the tyre is hot it is soft and you can have a Blow out when the Tyre Leaves the Rim Use your Handbook or 30psi if too soft go up in 2 psi increments until it feels compfortable

My 220 Sb Mercedes said 28 PSI for Cross-ply tyres and nothing about Radials i fitted 195 70 R 14found 30 psi rear and 28 Front a Nice ride and tyres lasted

On top of the tire being more likely to rupture if you hit a pothole or something, there would be uneven wear on the treads. And less traction obviously. 

The MAX PSI on the tire sidewall is only for when installing the tires on the rim to seal the bead!

Trailer tires are usually run at max pressure - car tires at max pressure would be very rough riding and poor handling due a smaller contact patch, but nothing that would make you run off the road due to lack of traction unless your were travelling too fast for conditions. 

Your temperature gauge doesn't run at  max, same for oil pressure, and amp/volt meter. Max is for safe inflation. If a sidewall blows out or beat splits and takes off a lip after 50 PSI it is not the fault of the tire company.

Follow your owners manual for tire pressure

Aircraft tires are at 200 psi.