Tire

Pressure for tires not on manufacturer's sticker

Pressure for tires not on manufacturer's sticker
  • 1477
  • Mark Baldwin
  1. What tire pressure should you not drive on?
  2. Should all your tires be the same PSI?
  3. Should all 4 tires have the same PSI?
  4. What PSI should my aftermarket tires be?
  5. Is 30 psi enough for tires?
  6. Is 40 psi good tire pressure?
  7. How many PSI is overinflated?
  8. Why do dealers overinflate tires?
  9. Is it bad to have uneven tire pressure?
  10. Is 38 psi too high?
  11. Is 28 psi too low for tires?
  12. Should front and rear tire pressure be the same?

What tire pressure should you not drive on?

If you have standard passenger tires (ninety percent of vehicles do) the lowest tire pressure you can generally drive with is 20 pounds per square inch (PSI). Anything under 20 PSI is considered a flat tire, and puts you at risk for a potentially devastating blowout.

Should all your tires be the same PSI?

Often, the vehicle manufacturers specify more air pressure in the back for this very reason. (Sometimes, not often, they specify a couple of pounds lower in the rear, but rarely more than 2 psi.) ... A good rule of thumb would be to keep the same variance front to rear that the vehicle manufacturer recommends.

Should all 4 tires have the same PSI?

Also can lead to vehicle instability problems, since the tires are designed to flex, but uneven tire pressures causes the tires to flex differently. Tires on the same axle, like both fronts, have the same recommended tire pressure and it is not unusual to see different recommended pressures from front to rear.

What PSI should my aftermarket tires be?

General rule is 75% of the max pressure of the tire. The psi on the vehicle is for performance and comfort compromise. If you want max fuel economy, you can go with 90% max tire pressure. I run 39 psi on my stock size (235/45/18) Yokohama's (51 psi max).

Is 30 psi enough for tires?

Being low on pressure doesn't hurt the tire or the wheel at all, unless they get very low, like 10 PSI. Also, you should check your owner's manual to see what the correct tire pressure setting is. 30 PSI is a safe bet, although the odds of your car specifying exactly 30 are rare.

Is 40 psi good tire pressure?

1. What's The Recommended Tire Pressure For My Car? ... Normal tire pressure is usually between 32~40 psi(pounds per square inch) when they are cold. So make sure you check your tire pressure after a long stay and usually, you can do it in the early morning.

How many PSI is overinflated?

Slightly overinflated tires (3 to 5 psi over placard) is sometimes a good thing. It promotes tire wear, fuel economy, steering responsiveness, hydroplaning resistance, snow traction, but the ride quality suffers.

Why do dealers overinflate tires?

Tires are overinflated during the shipping process, so as to help prevent the flat spot from forming in the tire as it sits for days on in during the shipping process. It is supposed to be part of the delivery check process that the service department deflates the tires to the proper pressure.

Is it bad to have uneven tire pressure?

It is normal for tire pressures to be uneven. Since the Maxima is FWD, the front tires are always going to be at slightly higher pressure than the rear because they do all the work to push the car forward, hence more friction, hence higher temperature thus higher tire pressure.

Is 38 psi too high?

Higher pressure generally is not dangerous, as long as you stay well below the “maximum inflation pressure.” That number is listed on each sidewall, and is much higher than your “recommended tire pressure” of 33 psi, Gary. So, in your case, I'd recommend that you put 35 or 36 psi in the tires and just leave it there.

Is 28 psi too low for tires?

Most passenger vehicles recommend 33 to 35 psi. At 28 psi, you're running a little low and really should get them aired back up. That's not what I would call alarmingly low, but anything more than three or four pounds below normal can cause handling problems and increases the potential for a blow-out.

Should front and rear tire pressure be the same?

Tyre pressures are normally higher in the front than the rear, to compensate for the extra weight of the engine and transmission, especially on front-wheel-drive cars. Some makers (BMW is one) run lower pressures in the front, mainly to improve tyre wear on rear-wheel-drive cars.

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