what tire pressure
Oh for pete's sake! if you have a white truck use fancy calculation..weight divided by cubic inches etc,etc....keep a calculator in glove box along with tire pressure gauge. For all other colored trucks..get magnifying glass and read min/max tire pressure ratings on sidewall of tire and use common sense. Rotate and watch tire wear.
I'll paint the truck a different color so I won't have to go through all that anymore to get my tires to the proper pressure!
Legend
Joined: Jul 2011
Posts: 8,259
Likes: 4
From: Austin, TX
Running the tires at the MAX PSI as stated on the side of the tire (example 80 PSI) when the door says to run them at 50 PSI will prematurely wear the tires out in the middle.
As argued earlier, PSI = Pounds per square inch. So the amount of weight that will be on the tire divided by the cubic inches inside the tire will equal the PSI you should run. SO... if you are running BIGGER tires with more square inches inside, LESS pressure will be required to achieve the same goal. I run 30 PSI in the front and 28 PSI in the rear with my 37's. It seemed to be the magic numbers to get them to ride and wear properly.
As argued earlier, PSI = Pounds per square inch. So the amount of weight that will be on the tire divided by the cubic inches inside the tire will equal the PSI you should run. SO... if you are running BIGGER tires with more square inches inside, LESS pressure will be required to achieve the same goal. I run 30 PSI in the front and 28 PSI in the rear with my 37's. It seemed to be the magic numbers to get them to ride and wear properly.
One last time, and I am done. Sticker on door has nothing to do with anything other than OEM style and size tire. Nothing. That sticker was put on as truck was being built - with that specific tire on it! Changing type and size of tire voids that information!
OP was talkling about changing tire size and type. Read the damn tire! Check tire manufacturer's website! (and your physics are off in the application there. Cubic inches are NOT the same thing as square inches, so any calcualtions based on such are wrong.)
Last edited by gdstock; Feb 11, 2013 at 09:33 AM.
One last time, and I am done. Sticker on door has nothing to do with anything other than OEM style and size tire. Nothing. That sticker was put on as truck was being built - with that specific tire on it! Changing type and size of tire voids that information! OP was talkling about changing tire size and type. Read the damn tire! Check tire manufacturer's website! (and your physics are off in the application there. Cubic inches are NOT the same thing as square inches, so any calcualtions based on such are wrong.)
OP was talkling about changing tire size and type. Read the damn tire! Check tire manufacturer's website! (and your physics are off in the application there. Cubic inches are NOT the same thing as square inches, so any calcualtions based on such are wrong.)
Administrator
Joined: Apr 2010
Posts: 87,437
Likes: 4,217
From: Clayton MI
Best ways to see what tire pressure is right for you is either putting a line of chalk across the tread, driving the truck IN A STRAIGHT LINE for a ways, and see what the wear on the chalk line looks like. Adjust pressure accordingly.
Another method is using an IR thermometer. Drive the truck for ways, then check temps across the tread. Gotta be quick though, as they cool relatively fast. Want even temps across the tread.
There are companies that make "temp tape" that changes color with temp.... drive truck for a while, slap the tape on the tread, and see what temps look like. Adjust pressure accordingly.
Another method is using an IR thermometer. Drive the truck for ways, then check temps across the tread. Gotta be quick though, as they cool relatively fast. Want even temps across the tread.
There are companies that make "temp tape" that changes color with temp.... drive truck for a while, slap the tape on the tread, and see what temps look like. Adjust pressure accordingly.
Champion
Joined: Sep 2011
Posts: 3,891
Likes: 8
From: NorCal
Correct!! +1
Do wuuut?? Not following the application of this as you'd typically do the pressure at "cold".
Do wuuut?? Not following the application of this as you'd typically do the pressure at "cold".
Record Breaker
Joined: Aug 2010
Posts: 2,241
Likes: 12
From: Ohio
Reading the temp across the tread. Hotter in center means overinflation. Hotter on edges means underinflation. At least I hope Im right. Ive never done it.