Cox89XJ
Tennessee
Senior Member
Joined: 07/27/2006
View Profile
 Offline
|
I usually air my 80 psi rear tires down to 60 psi when not towing since I have an air compressor at home.
|
rouleau
Taylorsville(Salt Lake City area), UT, USA
Senior Member
Joined: 10/23/2003
View Profile
Offline
|
If I am hauling the camper, I inflate the rears to 75 and the fronts to 65.
Otherwise, the recommended pressure.
Bill
|
Jack_Diane_Freedom
Lindsay Ont, and Gulf Coast Florida
Senior Member
Joined: 05/11/2005
View Profile
Offline
|
I run 80 psi rear and 70 front 24/7. The comments about braking are nonsense with ABS brakes. I have run like this on past two trucks for years with never a problem or ususual tire wear. A little rough on the ride but c'mon it's a truck.
|
shorthair
vancouver, wa. usa.
Senior Member
Joined: 03/18/2004
View Profile
Offline
|
BENT ARROW wrote:If they are to high for the load, as the rears on a PU with nothing in the bed, the center of the tire will wear faster. The same as with low pressure the sides wear faster. It would take hundreds of miles to see a difference in the tire wear unless you chalk the tread and run it a short distance.
Plus stopping distances will be greater when overinflated/underloaded.
|
chadsalt
sc
Senior Member
Joined: 04/04/2005
View Profile
Offline
|
Jack_Diane_Freedom wrote:I run 80 psi rear and 70 front 24/7. The comments about braking are nonsense with ABS brakes. I have run like this on past two trucks for years with never a problem or ususual tire wear. A little rough on the ride but c'mon it's a truck.
Like I said, contact patch is lost on some people. Pull the P275's off a Corvette and slap some P155's on.......then see what happens to the stopping distance.
|
|
|
BillyW
North ID
Senior Member
Joined: 10/08/2003
View Profile
Offline
|
It's a half ton right? When I upgraded to LT tires, I left them inflated around 60 lbs for convenience so I wouldn't have to air them up to tow. The middle wore out completely in 30k miles. Now I tow with my E rated BFGs at 45PSI. They perform flawlessly. I understand that tires need to be fully inflated for max stability, cooling, etc., however LT tires on a vehicle that comes from the factory with P-metrics don't need to be inflated any where near their max to provide their inherent advantages. If it's a 7 lug, HD F150 towing near capacity, it may need that additional pressure.
'97 F150 4X4
'04 Pioneer 18T6
|
Rubiranch
Salt Lake City, UT
Senior Member
Joined: 03/09/2004
View Profile
|
rouleau wrote:If I am hauling the camper, I inflate the rears to 75 and the fronts to 65.
Otherwise, the recommended pressure.
Bill
I know where Talorsville is.
I run the same as Bill except I run 40 psi front and rear when not towing.
I do leave the tires "aired-up" while camped.
TV: Mint 1972 Ford F-250 XLT
TT: 1969 19' Excel; entertains 6, feeds 4, sleeps 2
You don't shoot to kill, you shoot to stay alive.
I don't carry because I have to, I carry because I get to.
I like new things-
- when they're 40 years old!
My pictures
|
Rubiranch
Salt Lake City, UT
Senior Member
Joined: 03/09/2004
View Profile
|
Jack_Diane_Freedom wrote:but c'mon it's a truck.
I like my truck to ride like a car.
|
jat4
Upstate New York, Finger Lakes
New Member
Joined: 09/10/2008
View Profile
Offline
|
I really appreciate the responses, as well as the diversity of responses. 
I'm now somewhat less worried about leaving them aired up for short periods of time, but more committed to reducing the tire pressure for extended periods of time. Basically I hadn't thought of 75 psi as "overinflated" on an 80 psi rated tire, but I hadn't really thought about the load factor either. And I get the concept of the contact patch, and in fact I had thought the traction was a little light with them fully aired up. Plus wearing out the center of the tread makes them less useful/safe for towing. So for the moment I have them at about 52-53 psi in the front, 48 psi or so in the rear. And I do have a compressor, I just tend to be on the lazy side when it comes to pulling out my tools, power cords, finding lost chucks, etc.
Anyway. thanks again for all the response, I very much appreciate the feedback.
Jim T.
2008 Jayco 26L
2000 F-150 V8 5.4L
Reese HP dual cam WD hitch
Reese Brakeman controller
|
Al B
Cowtown
Senior Member
Joined: 10/22/2007
View Profile
Offline
|
I do agree with contact patch, but what I don't agree with, is the wear pattern on these LT tires. I run 75 PSI in the rear, year round, (I never know when I'm gonna be hauling weight), and my tires are wearing perfectly in the rear. The fronts are at 47PSI, and they too are wearing perfectly. I do find on wet pavement that it tends to break loose (no load) if I'm not careful, but keeps my driving skills in tune! ha ha Tire manufactuers put ratings on them for a reason. I would not hesitate to keep a tire near 80 PSI, for any amount of time. The only thing you will gain by lowering the pressure, is some contact patch, a little smoother ride, and a pain in the butt to put them back to 80 when the time comes. JMHO tho..
|
|
|
