Tire Pressure Question
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5th Wheeling
Joined: Feb 2007
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Tire Pressure Question
01 Ex Limited, 5.4L My 01 came with Load Range (LR) D tires as OEM. After some tread separation problems Firestone upgraded the tires to LR E. Now I am experiencing some abnormal tire wear problems and I suspect that the LR E tires should be inflated to a different pressure than the LR D tires. Later model Ex's came with LR E tires as OEM. Would someone with a later model 5.4 EX Limited that came with LR E tires please check the driver's side door labels and tell me what PSI Ford recommends for the LR E tires. Thanks.
Posting Guru
Joined: Oct 2003
Posts: 1,198
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From: Tulsa, OK
I have Michelin LTX M/S load range E. Original tires were BFG and they went 55K miles. The 2nd set were Michelins, and I ran them (without any cupping or strange wear patterns) for another 65K miles. I now have installed another set of Michelins, and they look great after 30K miles. The truck has 150,200 miles on it. I have the tires rotated every 7500 miles. I run at least 65 psig all the time, except when towing. Then, I run 75 - 80 psig. I recommend 65 psig and better tires--either Michelin or BFG.
Sit. Stay.
Joined: Oct 2001
Posts: 18,308
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From: Washington State
The inflation pressures didn't change when Ford put new tires on everybody's trucks.
Most suggest 5-10lbs. over the door jamb label.
E's don't need more air per se. They can just hold more.
Most suggest 5-10lbs. over the door jamb label.
E's don't need more air per se. They can just hold more.
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