Pounds of Pressure in Your Tires
03-06-11, 02:21 PM
#16
executive matchup
OK, I am going to say 2 things first:
1. I work at Discount Tire
2. My family owns a buisness, where we test tires.
You should always inflate your tires to the manufacturers recommended pressure. This is important for several reasons
-Underinflation will wear the outsides of the tire faster, while killing your gas mileage.
-Overinflation will wear the center faster than normal and can give you a harsher ride.
There are a few times you may want to run lower or higher than normal.
-Inflating your tires OVER the recommended pressure can give you better gas mileage and help if your vehicle is heavier than usual(like while towing something)
-Inflating UNDER the recommended tire pressure can be useful if you need more traction (like on a 1/4 mile run)
If you are running stretched tires, you may want to inflate over the recommended tire pressure(pure guess, say 40PSI) since the shoulders are getting used more, overinflation may help even out tire wear(Disclaimer: It is NEVER recommended to run stretched tires)
1. I work at Discount Tire
2. My family owns a buisness, where we test tires.
You should always inflate your tires to the manufacturers recommended pressure. This is important for several reasons
-Underinflation will wear the outsides of the tire faster, while killing your gas mileage.
-Overinflation will wear the center faster than normal and can give you a harsher ride.
There are a few times you may want to run lower or higher than normal.
-Inflating your tires OVER the recommended pressure can give you better gas mileage and help if your vehicle is heavier than usual(like while towing something)
-Inflating UNDER the recommended tire pressure can be useful if you need more traction (like on a 1/4 mile run)
If you are running stretched tires, you may want to inflate over the recommended tire pressure(pure guess, say 40PSI) since the shoulders are getting used more, overinflation may help even out tire wear(Disclaimer: It is NEVER recommended to run stretched tires)
03-06-11, 04:19 PM
#18
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Ok, so skip most of what I said before about under-inflation then, but can you tell us why you think running at least 10+ psi OVER-inflated is a good idea? Are you stretched or something? That just seems really high and must ride quite rough.
03-06-11, 07:18 PM
#19
Mythbuster and a few magazines did a Test of over-inflation, Manufactures recommendation and under-inflation for gas mpg. The found it is best to stick with recommended psi. You have a far greater risk of getting a blowout running that close to a max psi, especially if your climate is that of a hot one.
Link to video
http://dsc.discovery.com/videos/myth...sure-test.html
Link to video
http://dsc.discovery.com/videos/myth...sure-test.html
03-06-11, 07:46 PM
#20
Mythbuster and a few magazines did a Test of over-inflation, Manufactures recommendation and under-inflation for gas mpg. The found it is best to stick with recommended psi. You have a far greater risk of getting a blowout running that close to a max psi, especially if your climate is that of a hot one.
Link to video
http://dsc.discovery.com/videos/myth...sure-test.html
Link to video
http://dsc.discovery.com/videos/myth...sure-test.html
03-06-11, 09:44 PM
#25
I don't think that's safe. Depends on how far your stretch is. I was running 35 once on a 235 on a 10.5 and the tire fell off the bead while I was driving twice. Ever since I've ran 45 to be on the safe side, and has never happened again.
I take hard corners and track my car with stretched rims. I need to run high tire pressure.
I take hard corners and track my car with stretched rims. I need to run high tire pressure.
03-07-11, 02:33 AM
#26
Instructor
Thread Starter
dam, didnt think this thread would stir up so much controversy. My stock tires were @ 30lbs till i checked them an my ride wasnt so great, probably cuz my tires were old but once I inflated them to 36 all around, it seemed better
03-07-11, 07:16 AM
#28
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I don't think that's safe. Depends on how far your stretch is. I was running 35 once on a 235 on a 10.5 and the tire fell off the bead while I was driving twice. Ever since I've ran 45 to be on the safe side, and has never happened again.
I take hard corners and track my car with stretched rims. I need to run high tire pressure.
I take hard corners and track my car with stretched rims. I need to run high tire pressure.
03-07-11, 07:47 AM
#30
Ever since I switched brands, I've been fine. Your experience might be different than mine, since you may be running a different set up. I'm just stating my personal opinion on what I've noticed.