2022 Timberline Tire Pressures
- Thread starter LazSlate
- Start date
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99WhiteC5Coupe
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If the tire pressure in your vehicle’s tires were set at 50 psi when you took delivery, it means that the dealer service department that did the pre-delivery inspection (for which they are paid by Ford) did a poor job.
The decal is the recommend cold pressure from the vehicle manufacturer. If you changed tires, but bought tires with the same tire specification on the sidewall, the recommended pressure would not change (unless Ford has a recommendation in the owner’s manual for specific situations such as towing or driving on sand).
I do not know if the TPMS will alert to an over-inflated tire.
chuck s
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The decal in the drivers door jam is specific to the vehicle including the tires fitted at the factory. It's the pressure needed to support the maximum weight of the truck including all passengers and cargo. In this case 35psi will do it all. Increasing to 50psi will simply make the ride rougher but the truck won't have more capacity which is also listed on the placard.
-- Chuck
-- Chuck
Lou Hamilton
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The Goodyears should be 35psi.
I swapped out and run my Nitto's at 40-42. I liked how they felt on my old one, so why change.
BTW, I pump up the rears to 50psi when towing.
I swapped out and run my Nitto's at 40-42. I liked how they felt on my old one, so why change.
BTW, I pump up the rears to 50psi when towing.
chuck s
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Increased tire pressure lessens tire squirm when towing. Especially with the OEM P-metrics.
-- Chuck
-- Chuck
3rd Expyowner123
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I believe the 50psi is intentional from the factory, to prevent flat spots forming while having the vehicle stationary during shipping. As per LazSlate’s comments, tire pressure should be part of dealer’s pre-delivery review process.
chuck s
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Makes sense. Just fill 'em all to 50psi at the factory before they go on the car and eliminate one more thing to do after they're mounted on the truck.
51psi is maximum psi. Beyond that you risk a blow out. When tires roll down the road, they heat up increasing pressure. 35 psi is done to make the truck ride soft and smooth - very important when taking a test drive. When towing, I run mine at 43 psi cold. When headed towing 7K trailer, they heat up to about 45-47 psi -ish.
If you start out at 50psi, you leave no room for expansion. Naturally, this is if you are running regular air. Nitrogen will remain consistent pressure cold vs hot.
I'd like to upgrade the OEM tires to a heavier grade LT tire to cut down on the squirreliness and to add a bit more of a buffer from the max capacities of the oem tires.
If you start out at 50psi, you leave no room for expansion. Naturally, this is if you are running regular air. Nitrogen will remain consistent pressure cold vs hot.
I'd like to upgrade the OEM tires to a heavier grade LT tire to cut down on the squirreliness and to add a bit more of a buffer from the max capacities of the oem tires.
chuck s
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If your goal is to make your Expedition ride like a truck (instead of a Town Car) put LT (truck) tires on it. That's all they'll do for you. The Gross Vehicle Weight Rating -- the maximum legally allowable weight -- of the Expedition won't change and the tires on it now are more than capable.
My data:
GVWR: 7,500 pounds.
P-Metric OEM tires: 4 @ 2,735 pounds (each) = 10,940 pounds
My "Buffer"
= 3,440 pounds.
-- Chuck
My data:
GVWR: 7,500 pounds.
P-Metric OEM tires: 4 @ 2,735 pounds (each) = 10,940 pounds
My "Buffer"
= 3,440 pounds.-- Chuck
I see. So an upgrade to the tire capacity wont help the stability of the rig? Maybe a tad bit wider, thicker sidewalls, but no increase in height or GVW that's currently within the limits. Not looking to increase towing capacity as outlined on the door jamb sticker. But perhaps in an emergency maneuver with a trailer, the thing that connects me to the road could use a bump in capacity. FWIW, the concept Timberline ran larger tires.
