New LT tires on f150, what PSI
Hi, just bought new tires for my 2011 F150 max tow, had the p285/65 r80 and upgraded to the Michelin LTX M/S2 E rated tire same size. I used to run the p tires at 35 unloaded and 45 towing. When I che...
Forum Discussion
dodge guy wrote:goducks10 wrote:dodge guy wrote:
E rated are too much for a standard 150. for a standard 150 "C" rated tires are all that is necessary. running "E" tires underinflated for extended periods of time while under a load will heat them up considerably. you want to at least run them at 55-65psi to get the best use of them!
Why? My 12 CTD 2500 Ram's tire sticker says 65f, 45r.
Yes. But you truck has the need for "E" rated tires. A standard 1/2 ton does not!
Yes but my Ram is heavier than an F150. I ran my 10 F150 with Michelin E rated tires at 36psi for 16,000 miles before trading it in. Never had an issue. Sure that's not 40-50,000 miles but just because a tire is rated at 80 psi doesn't mean it needs to be at 60& psi to run properly. Running a lower psi with a lighter load is not a problem. Why would Discount Tire tell me to run 45psi for my max load if it was detrimental to the tire? How does the tire know if it's on a 1/2 ton or a 3/4 ton? I just fail to see your logic in needing to run 65psi simply because it's an E rated tire. What's interesting is my 12 Ram and my 10 F150 had almost identical rear weights and the Ram says 45r and discount said 45psi. It's not about the need, it's about the load when determining psi. The reason the Ram says 65f, 45r is because the load is lighter in the rear. Same goes for the F150 since it can't carry a heavy of load as the 3/4 ton, therefore the need for higher psi is not necessary.
