2nd Gen Non-Engine/Transmission Tire pressure

[Paulsdodge]

Guys,

I'm having trouble with the tires on my truck. They are the Mich LTX M/S OEM tires. The problem is wearing the outside (outer part of the tread) more than the center of the tread. I went by the manual and set the tire pressure at 55 for the front and 45 for the back. The tires were still wearing unevenly, so I set them at 60 psi all the way around. They are still wearing so I have set them to 70 psi recently. What do you guys run your tire pressure at ?? Oo.

 

[ceastmen]

Paul,

I have the same problem you have, 55 psi. front and rear and am getting

wear on the outside and inside of both tires.

My youngest son pointed the wear out to me on our last visit, he runs

his tires at 60-70 psi.

When I run the pressure that high the ride suffers.

It's probably from living in the mountains here in Colorado, lots of corners

which I should take a click or two slower.

Chuck

 

[PaulG]

a good rule of thumb guys is to run 10 PSI lower than max for everyday driving anything less is to soft and will wear faster than normal. now not all tire brands will be effected by running less but if ask any tire places that what they say.

myself i run 65psi all around

 

[Jerky]

I run 65 F & 50 R unloaded, 65-70 F & 75 R loaded

 

[WBlackburn]

I run 50R and 65F for a long time. I have a 01 and a 92 both with the same tires as you mentioned. dont really seem to have the problem. If I get 50k on a set of tires I feel lucky here in Colorado. Oo.

 

[Paulsdodge]

Thanks guys

 

[FourBarR]

my truck has 321000km or about 200000k. came with good years. put on michelins after i wore out the g/ys . now on second set of michelins . i have always used 50 psi all around when unloaded, which is most of the time . adjust rear up to match the load. last set of tires lasted 95000 k. my 2 cts.

 

[continentaldrifter]

i run 72 in the front and 65 in the rear ,pump 'em up!!

 

[WaynesWorld]

Pualsdodge,

What is the rating on your tires? Look to the sidewall for the best air pressure, which I'm certain you did already. I've got "E" rated & run 80 lbs. in them. My wear is even. I drive it like i do my Corvette, so it gets put thru the paces. If we drive like we stole it, thats how we pay for tires.



WAYNES WORLD

 

[Paulsdodge]

Waynesworld,

My tires are rated the same as yours, 80psi max and load range E. I choose to look in the recommended tire pressure guide instead of the sidewall of the tire for the redcommended tire pressure, hoping for a softer ride. Well once again I have made a mistake . I believe you should inflate your tire to within 10% of the recommended maxium tire pressure. Oo.

 

[RT66DOC]

D-rated BFG ATs - Front 65 Rear 50. 55k on these tires with even wear and >1/3 tread left. Rancho 9000s: Front max firm - Rear one click up from soft. Rides good.

 

[FDziurda]

Calculating Tire Pressure

This hasn't been posted in quite awhile, but is the method, I have used since my truck was new. Ist set of Michelins went 60k miles and second set is still going strong at 95k miles.



Look at the ratings on the sidewalls of your tires. My Load Range "E" Michelins All-Terrains state Max Load of 3042 lbs at 80 psi. Weigh your truck's front and rear axles. Mine weighs 4300# front and 3300# rear. My truck is a 2500, so 2 tires have a single axle load handling capacity of 3042 lbs X 2 = 6,084 lbs. To determine the tire pressure, take the actual axle weight and divide it by the max the tires can handle, then multiply it times the max tire pressure (80psi). Example: My front axle weighs 4,300#. to find the tire pressure 4300/6084 x 80 psi = 56 psi. I round it up to 60 psi to make it easy to remember. My rear axle weighs 3300#, so the tire pressure is calculated as 3300/6084 X 80 psi = 43 psi. I round it up to 45 psi. If you tow, you will need to know your axle weights with your 5er or trailer hooked up.



This method works with any kind of tire on any vehicle. I use this method on all my vehicles and have had great tire wear and the ride/handling is excellent.



Hope it works for everyone else,



Frank Dz

 

[George O]

My oem's were Michelin and got 103,000 on them. Always ran 42R 52 to 55F unloaded and 55R 65F when loaded. Almost all my miles are highway.



So satisified, bought some more Michelin's, now at 145,000. Rotate everytime I change oil which is every 6000 miles.

 

[MatthewPark]

Some tires have a load vs tire pressure chart from the manufacturer. If you have one of these and a scale nearby, the correct tire pressure is real easy to find. Just ask the place where you got your tires, someone there will know if such chart exists for your tires.

 

[John - K5AWO]

When the tires wear on the outside edges, there is one of two things wrong. Maybe both. Maybe a third reason, a posi-tract rear axle emphasizes the front tire edge wear.



under inflation or highspeed cornering. under inflation will cause the sidewalls to droop and the center of the tread to cup up off the roadbed.



Either air them up or quit the highspeed corners.



I take corners at low speeds and coasting, no power on at all. That is here in the Phoenix area.



When I used to live in the mountain areas (Rockies) and was driving posted speed plus 20, I kept the treads at the MAX sidewall pressure rating and would get 50k to 75k on a Dodge RamCharger 4x4. Tread wear would be even across the tread.



currently, I am running 65F and 55R on my dually. Ride is a tad harsher, but the improved MPG makes it worth it to me. Want soft ride? Buy new tires more often.

 

[RWatson]

I run the same tires and am on my second set of Michelin's. I experimented with tire pressures after I began experiencing feathering around 5k after I owned the truck. What I have found that worked best for me that also got me 70K on my first set of tires, was 65 Front and 60 Rear (empty) and 65 front and 70 to 75 (loaded towing 10k 5thr). I would have gotten a little longer life out of the first set except that a large piece of metal decided to play road warrior with both passenger tire side walls I also rotate tires every 7,500 miles. Yeah the ride is a little rough, but gas milage is around 20+ mpg @ 75 mph average and the tires seem to wear nice and even.



Randy

 

[DKupfrian]

Frank Dz,

I've always used the same formula to calculate what pressure I should run. I just replaced my stock Michelins at 80k and could have gone another 10k if I wanted. These tires aren't cheap. It's a shame they wear out quickly for some. I do 75% highway driving and that may have played a strong part in them lasting.