2007-01-23 12:34:57 · 8 answers · asked by rmreed03 2 in Cars & Transportation ➔ Other - Cars & Transportation
This is common on rear drive, front-engine cars. Check the recommended tire pressure label on many cars today inside the driver door and you'll see that the recommended pressure for the rear is often higher than for the front.
There are a couple reasons for this. One is to increase the surface contact patch on the front tires for more grip. In an emergency manuever, it's always better to have the rear tires break loose first so you can steer into the turn and correct it, than the front tires to break loose.
Second, the additional weight of the engine over the front wheels puts an additional load on the front wheels and less air in the tire forces the tire to absorb some of the impact when the car rides over a bump.
Always follow the manufacturer's recommended pressures. You'll also find a maximum pressure rating molded into the side of the tires themselves, but ignore that. Running tires above the manufacturer specs on pressure will cause poor traction, poor handling and premature wear to the center of the tire tread, wheel bearings and suspension components.
2007-01-23 12:49:24 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Your recommended air pressure is indicated on your door sticker and/or your owners manual. Air pressure will change by 1psi for every 6C or 10F so check often. Your tires will also lose about 1psi per month (25% through the wheel/tire interface and 75% through the tire's membrane). This does not mean you should over-inflate your tires! When you fuel up, just check your air pressure. You will save money in the long run.
The maximum pressure indicated on the side of your tire is a warning not a guide. It is telling you what not to exceed, not what is recommended for your vehicle. Tire manufacturers and vehicle manufacturers work together to determine the correct air pressure to optimize performance, economy, weight capacity and tire wear.
It is frightening to read some of these answers. If you don't know, please don't answer.
Readers should always practice due diligence.
2007-01-27 07:00:59 · answer #2 · answered by psiseal 1 · 0⤊ 0⤋
I agree with CCRider77. Accurate answer.
*ALWAYS*, no matter who you are, or what your beliefs in car maintenance is, or what your father told you, always, always, always check the label on the door jamb of your vehicle for the correct tire pressure. Do not just put "35" or "30" lbs psi in them simply because that is always what you have done - you can create an unsafe circumstance in an emergency situation, and find yourself upside down, hurt, or dead, simply because you didn't follow the door jamb label's recommended inflation.
The psi is usually different for the front and rear tires, and can even change based on the size of factory wheels and tires that came with your car, and beyond that it may also change with the load in the vehicle if you are carrying more passengers and cargo, for instance. All of this information will be on the label, but you will have to search all of your door jambs since there is no standard as to which jamb it is installed on.
Having the correct pressure will also increase the longevity of the tread life of your tires and ensure you're getting the maximum MPG that your vehicle was designed to deliver.
[can you tell I was in the tire biz previously? hehe] :Þ
2007-01-23 13:01:09 · answer #3 · answered by gtimandan 2 · 1⤊ 1⤋
Do Not go by the label on the door jamb..... this is the manufacturer of the cars suggestion..... how can they suggest what the tire company's max pressure is on their tire?? All tires have different max pressure's as well. Go by the maximum pressure of your tire and fill it 5 pounds under the max. I have been doing it this way for 25 years and my tires wear perfect and I get great mileage and the ride is comfortable.
2007-01-23 13:14:13 · answer #4 · answered by Anonymous · 0⤊ 1⤋
I really don't know why unless they figure you are going to carry weight in the back, I take my trailblazer in for oil changes and they put 40 lbs. in all the tires and thats a GM dealer.
2007-01-23 12:40:41 · answer #5 · answered by mister ss 7 · 0⤊ 0⤋
it is normal for tires to lose air pressure.I usually check my tire pressure at least once a month and i always have to add some air .you might want to listen closely,to see if you can hear a small leak in one of the tires.
2007-01-23 12:47:18 · answer #6 · answered by Heike P 4 · 0⤊ 0⤋
look on the door jamb sticker drivers side that seems a little strange
2007-01-24 12:25:12 · answer #7 · answered by 51 6 · 0⤊ 0⤋
weight. front is heavier so less air to distribute the weight. rear less weight so more air to keep traction.
2007-01-23 12:46:54 · answer #8 · answered by Anonymous · 0⤊ 0⤋