PSI ?

What psi do you run in your tires, I put 35 psi in my 265-70-16, looked on the side of my tires, "damn" it said 50 psi, this would be like ridding a pogo stick, question is what does everybody else run ? First I'm not as smart as the tire engineers , but I know what my ass is telling me . Thanks guys, milo

 

50 is most likely the max psi for the tire.

 

inside your driver's side door panel it should say to keep your psi 29. the 50 psi on the tire is what the max of what your tire can handle before blowing or becoming unsafe. somewhere on here I think someone suggested running 32 front and 30 rear but it may be the other way around. worth a search if your really want to know.

 

I run the same tires on 17's, 32 psi

 

32 up front & 30 in the rear. World of difference in ride and handling over 29.

 

I run 36 PSI F&R for improved fuel Economy.

 

I run 34 all 4 and I dunno why

 

look up a tire chalk test - best way to get the longest wear

 

I run whatever that sticker says on all my vehicles

 

Chalk test.

 

Thanks Guys, ya'll are the best, gonna back down to 32 psi for the ride, my ass is worth more than long wearing tires. I assume the 32 psi is cold ? milo

 

I run the suggested from the manufacture of 29 front & 32 rear (for my truck). There is significant scientific testing out there from the government and other sources that show how much or what percentage of power is used to overcome the different forms of resistance in making our trucks (actually vehicles in general) move & I've done some of my own (obviously non-scientific) experiments and haven't noted a significant deference in MPG regardless of how high my PSIG is, just so it's at or above the vehicle manufacture recommendation.

As far as tire longevity, I've got about 65,000 miles on my original tires. They still have good tread remaining. And I'm satisfied with the ride & handling quality.

If you're interested there are threads with links attached to non-biased sites comparing MPG etc. in the not too distant past.

ON EDIT: Yes, set your pressure with cold tires.

 

As long as you are not hauling anything 35 psi is fine and will give a better ride, but your MPG will suffer. If you haul weight you should increase the PSI closer to the max to keep the sidewalls from breaking down.

 

How does MPG suffer with 35 PSI? Generally an inflated tire gives a bit less rolling resistance and an increase in MPG.

 

40 PSI front and 38PSI rear, chalk tested. Have very even wear at about 20K miles.

 

I inflate per the toyota directions.
increased (overinflated) tire pressure = increased suspension component wear.

 

http://www.fueleconomy.gov/feg/atv.shtml

This link provides data about where the energy goes. Rolling resistance consumes approximately 5% to 6% of all the energy produced (combined). IMO, not exactly a large amount. Even if I could cut that number in half to something like 2.5 to 3%, at ~20mpg it isn't much. I would question even being able to shave that number by a tenth even going from 35psi to 50psi (but I really don't know). At 12,000 miles a year with 20mpg at $3 a gallon it's only around $45 a year. Skip the Starbucks a few times if its an issue and you're there....

 

32 front, 30 rear.