Driving from Flagstaff to Tucson, barametric pressure decreases, altitude decreases, heat greatly increases. 20 miles from Tucson tire blows the tread - still holding pressure, went to tire guy, did pressure test - shot the gauge out of his hand (about 75 psi on both fron tires) any ideas on what happened - Tire guy said the only way to increase pressure was to physically aid air. Thanks
2007-07-21 21:13:49 · 10 answers · asked by Anonymous in Cars & Transportation ➔ Maintenance & Repairs
Air can expand and contract with heat/cold... but I doubt the pressure difference would be more than +/- 5 lbs. It is most likely the tires were over inflated to begin with. Most passenger cars only require 30-35 lbs of tire pressure. No road circumstance would cause the air pressure to double.
What's my guess? Go back to the tire gauge used when the tires were FIRST inflated... I'll bet its defective, or it was used improperly. Either that, or no tire gauge was used at all, and the tires were inflated by eye... heaven forbid.
It should also be noted that many people read the max inflation notice on the sides of their tires, and promptly fill them all the way up... 40-50 lbs. Your CAR, however, may have different requirements. The auto manufacturer has the appropriate air pressure for your tires listed on a placard inside the driver side door jamb, the glove box, or the user manual. As stated before, usually no more than 29-35 lbs.
2007-07-21 21:27:26 · answer #1 · answered by stonedog_33 3 · 0⤊ 0⤋
Increase Air Pressure
2016-12-12 03:47:10 · answer #2 · answered by cerchia 4 · 0⤊ 0⤋
Remember that hot air expands. Therefore, the air pressure inside the tyre will increase as you drive. Under normal driving conditions around town this is not a problem, but on the open road and the race track you need to keep it in mind. The same goes for oil pressure. That is why you must always check tyre pressure and oil levels before leaving on a long trip. The manufacturers take this into account and they recomend pressures accordingly.
2007-07-21 21:20:52 · answer #3 · answered by Anonymous · 1⤊ 0⤋
Tyre pressure will increase with temperature. This is one of the basic gas laws. This is why aircraft and high end racing teams use nitrogen to inflate tyres.
To get to 75psi, the tyres must have been over-inflated in the first place.
Were you using retreads? They are a recipie for disaster in hot climates. If there are any air pockets between the tread and the case, as temps rise the air expands and blows the tread off. I would not use retreads on my wheel-barrow.
Good luck to you.
2007-07-21 21:28:34 · answer #4 · answered by skytrain18 3 · 0⤊ 0⤋
the heat from the road causes tire pressure to raise thats why the factory pressure measurments say cold
2007-07-21 21:22:29 · answer #5 · answered by Azn Street Racer 5 · 1⤊ 0⤋
Hot and cold both affect tire pressure but not that much. they had to have been terribly over inflated to begin with.
2007-07-22 05:10:14 · answer #6 · answered by Chris 2 · 0⤊ 1⤋
Heat will raise pressure, .........but not up to 75 lb.s from any reasonable starting pressure.
Generally cold to hot is only about 5 lb.s difference.
Who last inflated those tires??????????????
2007-07-21 22:45:50 · answer #7 · answered by Irv S 7 · 0⤊ 0⤋
Road heat can really raise internal pressure.
2007-07-21 21:17:44 · answer #8 · answered by (A) 7 · 1⤊ 0⤋
my tyres keep going from 34 to either 38 or 40 and i have used different gauges for same result any ideas why?
2014-02-26 09:17:17 · answer #9 · answered by Russell 1 · 0⤊ 0⤋
For a tire man he sure was dumb.Heat and cold will change air pressure.especially heat.
2007-07-21 21:21:05 · answer #10 · answered by joystoy33 3 · 1⤊ 0⤋