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Correct tire pressure Sign up here! Search this forum this category all forums for All words Any words Whole Phrase (search options) Auto Repair Home>> Automotive Repair>> Car Troubleshooting Madhu New User May 29, 2005, 11:21 AM Post #1 of 3 (2564 views) Correct tire pressure Sign In Hi, Just a casual query on how I should decide the correct tire pressure for my car. The last time I checked my car tire pressure was in February, when the ambient temperatures are generally cold (I live in Iowa). I had 29psi of air in my car tires then. When I checked the pressure recently (in May), I found that the tire pressure had risen to 34 psi. This is obviously due to the increase in the ambient temperature. The car manufacturer recommends 29psi in all the tires. Should I reduce the current tire pressure to match with the manufacturers recommendations or leave the tire pressure as it is on account of the higher ambient temperatures? I usually take these readings after driving for less than a mile (i.e. under 'cold' conditions). Thanks, Madhu DanD Veteran / Moderator May 29, 2005, 1:23 PM Post #2 of 3 (2560 views) Re: Correct tire pressure Sign In This is a question that has been debated on for a number of years. Ask the auto manufacturer and they will say, (like what yours does) 29 psi because according to them the suspension is set up to run with a softer tire. I think they want the tires that soft just to improve the ride, considering that the tire takes the first shot when we hit a pothole or dump. Ask the tire manufacturer and they say no less then two to three pounds below the tires maximum pressure, to get the best life from the tire. You’ll find that rating printed on the side of the tire. Myself I tend go with the tire provider for a base pressure to start with and then keep a close watch for tire wear. If I see that both outside edges have wear I increase the pressures a little bit. If the center section of tread is showing signs of heavier wear I decrease the pressures. As for when to check a tires pressure is when the tire itself is cold and not right after coming off the highway, regardless of ambient temperature. When there is a swing in the weather sure the pressures will change that’s why you should check the pressures on a regular basis. Dan. Canadian "EH" Tom Greenleaf Ultimate Carjunky / Moderator May 29, 2005, 1:33 PM Post #3 of 3 (2560 views) Re: Correct tire pressure Sign In Tire pressure is real important and the most neglegled thing. TMK pressures will change 1lb for every 10 degrees. I wouldn't get too excited at 34 when 29 is posted average. The most important thing is that they are all the same! When one is off - stop and find out why!! Also the gauges can be off by a couple lbs. What can you do ?   Automotive Repair     Auto Body Repair and Refinishing     Heating or AC Issues     Electrical and Wiring     Brake Systems     Car Stereo Repair Advice     General Discussions     Car Making Funny Noises     Engine Fault Codes     Engine Troubles     Exhaust Systems     Steering and Suspension     Transmission Troubles     Tricks of the Trade Automotive World     General Discussions     Antique Car Talk     Car Shows and Events     The Bargin Bin     Motor Vehicle Inspection     Car Care Tips     Traffic Tickets     Gasoline, Motor Oils, Concept Cars and Engines     Auto Insurance, Financing, Leases, Warranties Truck Repair     General Discussions     Truck Engine Repair     Truck Suspension Repair Motorcycle Repair     General Discussions     Motorcycle Engine Repair CarJunky     Open Posting     Board FAQ's     New Board Suggestions

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