2007-08-21 01:43:53 · 3 answers · asked by Anonymous in Cars & Transportation ➔ Maintenance & Repairs
I vote for the maximum posted on the tire sidewall also. Spend a few bucks extra and have your tires inflated with nitrogen. The molecules are enormous, helping to prevent leaks. It's an inert gas with no moisture, rust or contamination. It resists heat / pressure fluctuations and inside surfaces of your valuable aluminum wheels will never dis-color or corrode. Tire life is extended up to an honest 20% because the inert gas does not degrade the inside of the tire.
If your car feels like your getting a a rough ride with the increased air pressure jot down the suggested tire pressure posted on your door post, add the maximum pressure posted on the tire and divide by two. Try this pressure to soften up the ride.
2007-08-21 02:18:11 · answer #1 · answered by Country Boy 7 · 0⤊ 1⤋
DO NOT use the maximum psi listed on the sidewall! Only morons do that.
I can give you a specific, scientific answer and tell you how I arrived at it but I need to know the exact tire size that you are using now, right down to the load index. The stock size for example on most Alero's is a "P215/60R15 93S" with the "93" being the load index. Whenever considering different tire sizes you have to consider the entire number, not just the dimensions. There are only a few hundred 17-inch tire sizes all with different load and inflation tables so just knowing the tire has a 17-inch hole in the middle isn't enough to give an answer to your question.
ASE Certified Automotive Service Advisor working in the tire industry.
2007-08-21 09:44:07 · answer #2 · answered by Naughtums 7 · 0⤊ 0⤋
The maximum psi shown on the sidewall of the tire.
2007-08-21 08:51:58 · answer #3 · answered by James A 4 · 0⤊ 1⤋