Should my tires be at the max PSI?

Question

They are Goodyear Assurance tires, not the original tires on the car. The only thing (regarding pressure) on the tire is 45 max PSI. Should I keep it there since it generally rides well?

Also, is it better to keep tire pressure a little lower for better traction in the winter?

Answer 1

Ignore most of the answers above. It is time for a professional opinion.

This is what Goodyear, the people who made your tires have to say, taken directly from their web site:

"Proper inflation is the single most important part of tire care. The inflation pressure on the side of the tire is the MAXIMUM operating pressure. It is not necessarily the right inflation for your vehicle. Always use the inflation recommended by the vehicle manufacturer. You can find it in your owner's manual, posted on the edge of the driver's door, on a door post or on the inside of the glovebox door. Always check inflation when tires are COLD: when the vehicle has been driven less than a mile or one hour or more after driving. Use a good quality tire gauge. Note: It's natural for radial tires to have a slight bulge in the sidewall at their proper inflation pressure. Check or adjust inflation every few weeks, before any long trip or if traveling with a heavy load. And don't forget to check the spare. Your Goodyear retailer can answer any questions you may have about tire inflation."

http://www.goodyeartires.com/faqs/Inflation.html

Contrary to popular myth (widely spread around here) inflation pressures do not change if you put a different brand of tire on your car. Inflation requirements are determined by tire size, not brand. All tires of the same size, no matter who made them will have the same inflation requirements.

Answer 2

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It will be difficult to tell you where to find the proper air pressure for your tires because (like everyone else) you have not given us the year, make and model of the vehicle. However, if you look on drivers door or door jam, typically there will be a sticker there. It will give you tire sizes and the recommended air pressure, both front and rear, (may be different) that you should be using. The maximum air pressure on your tire is only to maintain the tires load carrying capacity at the tires maximum load. So, if you do not haul or tow you should never have those tires at max PSI. Use a quality air gauge and always check the tire pressure when the tires are cold. Driving as little as 1 mile can change the air pressure in the tires. .,.

Answer 3

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RE:
Should my tires be at the max PSI?
They are Goodyear Assurance tires, not the original tires on the car. The only thing (regarding pressure) on the tire is 45 max PSI. Should I keep it there since it generally rides well?

Also, is it better to keep tire pressure a little lower for better traction in the winter?

Answer 4

Max Tire Pressure

Answer 5

I would have the pressure at 35 the max PSI is for when you are carrying a heavy load

Answer 6

This does depend on the type of car. But generally, the car manufacturers pressure is the starting point (not the max. on the sidwall of the tire).

Usually, this pressure is influenced by the manufacturer's desire for the car to have a soft and very smooth ride, and is lower than optimum for best mileage and handling. (The proof of this was the fingerpointing between Ford and Firestone over the Explorer blow-out accidents. Firestone said that Ford's tire pressures were way too low.)

So I start with the recommended pressure and then add about 4 or 5 psi, measured with the tires cold. If you know that the car will have a heavy load &/or a long trip on freeways, you should should add 6 or 8 psi to the recommended pressure.

Answer 7

Assurance Tires

Answer 8

Keep the tires inflated to the pressure in the manual,not the sidewall-this is max (on sidewall) and tire pessure will increase as tires get warm(driving).

Answer 9

your vehicle will post (it will be on a label on the door post or under the hood) the recommended tire pressure. this is the pressure at which the vehicle handles best.
the difference between the posted pressure (probably 32) and the max pressure is
1. max will give you slightly better mileage
2. max will give you a substantially worse ride
3. max will give you worse handling on all surfaces-wet and dry

Answer 10

Lowering air pressure does not improve traction, it actually reduces the amount of tread hitting the road.

The proper tire pressure for the tires on your car, is on a sticker on the drivers door, or the drivers door post.