Tire pressure
Senior User
Joined: Feb 2007
Posts: 194
Likes: 1
From: Cheyenne, Wyoming
Tire Pressure Confusion
I am totally confused with my tires. I am running Michelin LT235/85 R16. The tires themselves say if running single or dual, pressure 80PSI. I would have thought that this is the MAX.
Yet, on the sticker in the door jam, it says FRONT 55 and REAR 80. Do they really want me running the rears at 80psi.
I will give up on comfort for the BEST gas mileage and longest life of the tires. Trying to figure out the proper balance here. Here are the stats on the truck. Any suggestions? Thx... Mike.....
1994 FORD F250
Standard Cab
7.5l 460 engine
Limited Slip Differential
4 speed E4OD auto
55,500 original miles. (Just bought it)
Michelin LT235/85R16
Thanks again. Later.... Mike....
Yet, on the sticker in the door jam, it says FRONT 55 and REAR 80. Do they really want me running the rears at 80psi.
I will give up on comfort for the BEST gas mileage and longest life of the tires. Trying to figure out the proper balance here. Here are the stats on the truck. Any suggestions? Thx... Mike.....
1994 FORD F250
Standard Cab
7.5l 460 engine
Limited Slip Differential
4 speed E4OD auto
55,500 original miles. (Just bought it)
Michelin LT235/85R16
Thanks again. Later.... Mike....
Senior User
Joined: Dec 2006
Posts: 241
Likes: 0
From: Damascus
see malikenya' post this was part of the second ford firestone fiasco firestone preempted ford on this one and forced a recall if you check the load that a load range D is rated at it will not safely carry the gvrw of a loaded (towing) ex therefore the switch to E rated tires Ford was looking for a softer ride hence lighter springs and D rated tires Took my Ex into firestone and the first thing they did was scrape off the doorpost sticker. the second thing they did was drill holes in four perfectly good tires.
I run 60 psi all four all the time and the tires are wearing well
I run 60 psi all four all the time and the tires are wearing well
Senior User
Joined: Dec 2006
Posts: 253
Likes: 1
Make sure you check your rims psi rating. My early 99 CC Dually had aluminum rims on it and I brought the truck into the tire place for a free rotation(last time i will do that) the guy put 80psi in the tires. 2 days later i was towing my 9000lbs camper on our way to fla, I 95 and we stopped for lunch, i heard air coming from somewhere, front left tire looked low, so i ran my hand round the tire and nothing. I put my fingers inside the wheel and sure enough there was a 14 in crack inside the wheel. First thing i did was lower all the other tire pressures to 60 and then i put my spare on. That could have been a disaster if it blew, It cost me 350.00 for a new wheel which took forever to get. Just remember that tire ratings are for the tire, an E rated tire can have a max psi rating of 80 but the rim may not be rated for that. Mostly E rated tires are used on steel wheel applications. So check your rims !!!!!!!!
Posting Guru
Joined: Jul 2006
Posts: 1,720
Likes: 1
Originally Posted by betontheturtle
Took my Ex into firestone and the first thing they did was scrape off the doorpost sticker. the second thing they did was drill holes in four perfectly good tires.
I run 60 psi all four all the time and the tires are wearing well
I run 60 psi all four all the time and the tires are wearing well
For them to drill holes,, as long as they bought the tires.
Just my $.02. Jim
Mountain Pass
Joined: Sep 2003
Posts: 131
Likes: 0
From: Germantown (Memphis), TN
My 2000 has two stickers. the main one on the vehicle part of the door jamb with the VIN, paint codes, axles, barcodes, etc says 45f/55r. There is another on the catch part of teh door that says 38f/45r.
Am I to assume the one on the door with 38/45 should be removed? Those pressures seem way low for basically any tire.
https://www.ford-trucks.com/user_gal...142889.520.390
The 2nd part is the tires on my Ex are Firestone Destination A/Ts. They are only Load Range C, but claim a max of 2470 lbs each (that's 9880 total). The odd part is that they max the weight rating at a max pressure of 50 psi.
Should run them at 45-50f and 50r all the time? I'm especially curious as I am about to make a 1200+ mile road trip (NOTtowing) and don't want them to get too hot and have any issues.
*edit* They are stock sized LT265/75R15s
Am I to assume the one on the door with 38/45 should be removed? Those pressures seem way low for basically any tire.
https://www.ford-trucks.com/user_gal...142889.520.390
The 2nd part is the tires on my Ex are Firestone Destination A/Ts. They are only Load Range C, but claim a max of 2470 lbs each (that's 9880 total). The odd part is that they max the weight rating at a max pressure of 50 psi.
Should run them at 45-50f and 50r all the time? I'm especially curious as I am about to make a 1200+ mile road trip (NOTtowing) and don't want them to get too hot and have any issues.
*edit* They are stock sized LT265/75R15s
Last edited by JAY95gt; Mar 6, 2007 at 03:51 PM.
Senior User
Joined: Dec 2006
Posts: 241
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From: Damascus
jay thats the sticker firestone scraped off my ex . load range C seems way wrong but they are cheaper fewer plies in the consruction load range D was spec as issued and later upgraded to load range E. my ex came with lt 265/75R 16s
Logistics Pro
Joined: Feb 2005
Posts: 3,529
Likes: 390
From: SEVA
Originally Posted by JAY95gt
Should run them at 45-50f and 50r all the time? I'm especially curious as I am about to make a 1200+ mile road trip (NOTtowing) and don't want them to get too hot and have any issues.
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Mountain Pass
Joined: Apr 2002
Posts: 106
Likes: 1
From: SF Bay Area
I'm running 60PSI (cold) on all four corners. Good handling. Great wear. Driven 100% on city/hiway.
Tires: Yokohama Geolander H/T-S, LT285/75-16, Load Range D on stock rims.
Max Load = 3305 lbs @ 65psi
Tires: Yokohama Geolander H/T-S, LT285/75-16, Load Range D on stock rims.
Max Load = 3305 lbs @ 65psi
Last edited by Cobra 427; Mar 6, 2007 at 04:57 PM.
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