NAH Tire Pressure - GreenHybrid

JTirak · #1 (**permalink**) 04-19-2008, 07:38 PM

Have any of you increased the tire pressure of your NAH over the recommended 35PSI to increase mpg? I went up to 42psi but afraid to go any higher.

TheSpoils · #2 (**permalink**) 04-21-2008, 04:47 PM

Hey Jack, I went to the max 44 psi. As a matter of fact, i have 3 tire psi gauges and they all give me slightly different reading (+/- 1 psi) so during my oil change, i asked my dealer to increase the psi to 44, they had no problem with it. I also spoke with an independent tire shop specialist in newark and he informed me that the only draw back he was aware of is the harsh ride and that the tire failure rate is way above 44 psi. My mpg increased slightly however I immediately noticed the sharper steering and the ability to coast a longer stretch with the increased psi. It also reduced the boat feel that others have mentioned on various posts. My toyota tacoma has huge tires, but the psi max sidewall is 35 psi, i have it at 44 psi also with no ill effects to date. I have heard of some who will increase psi to 50 or 60. Not ready to try that yet. Good luck

ILoveChess100 · #3 (**permalink**) 04-22-2008, 02:05 AM

Quote:

Originally Posted by TheSpoils

Hey Jack, I went to the max 44 psi. As a matter of fact, i have 3 tire psi gauges and they all give me slightly different reading (+/- 1 psi) so during my oil change, i asked my dealer to increase the psi to 44, they had no problem with it. I also spoke with an independent tire shop specialist in newark and he informed me that the only draw back he was aware of is the harsh ride and that the tire failure rate is way above 44 psi. My mpg increased slightly however I immediately noticed the sharper steering and the ability to coast a longer stretch with the increased psi. It also reduced the boat feel that others have mentioned on various posts. My toyota tacoma has huge tires, but the psi max sidewall is 35 psi, i have it at 44 psi also with no ill effects to date. I have heard of some who will increase psi to 50 or 60. Not ready to try that yet. Good luck

If you hit some bigger holes on the road your tires are more likely to blow out at 44 psi as opposed to at 32. If you go into a skid you are more likely to shred a tire with bigger psi... Though contrary to comon belief, eventhough the overinflated tires make less contact with the ground when cornering or braking the higher psi tires will perform slightly better due to their stifness (assuming they don't shred).