I just purchased a 2020 F150 XLT 4x4 Crewcab with a 5.0. I am wanting to change the stock P tires to LT tires with an E load for tt towing. I have the productivity screen that shows each tires pressure. Will this register the higher pressure required for an E load range tire? Will this change in required pressure cause a TPMS fault? Will my oem 18 inch rims withstand the higher pressure required? My tires are 275/65/18. Any suggestion's? Sorry for my ignorance

 

My 16 came with the factory aluminum with E rated tires tires so I presuming you will be alright (same size as yours)
My TPMS reads what the actual tire pressure is & so should yours.....Mine all read 42lbs which is what I have them set at !!
I only run this pressure because it is basically empty & no trailer.... I also like a stiffer tire when empty !!
Of course you may have to adjust your pressure higher as needed when trailer is hooked up !!
Personally I think you will be alright with rims & tires whatever pressure!!

 

I just put E-Rated tires on my HDPP that came with LR-C with 50psi max pressure, with plans to run 60 to 65psi when towing with the E rated tires, and I would think that the rim can handle it with no problems. I would like to think Ford uses the same TPM system for all their trucks, but with various stems lengths for different rims.

I was able to temporarily experience P-rated tires on my truck after selling my Wranglers with 13,000 miles, and the P rated tires rode slightly more comfortably, but felt less responsive. The Michelin E-rated tires with more pressure ride about the same or slightly more comfortable than the Wranglers.

The E-rated Michelins has about the same tread depth as the C-rated Wranglers, and more than the P-rated Michelins.

The Wranglers when off the vehicle has what felt like a stiffer feeling sidewall than even the E-rated Michelins, and it seems as if the Michelins gets its higher ratings from higher tire pressure, not from a brutal stiff feeling sidewall.

My Michelins are at 44psi on the front now, and rides just as comfortable as the Wranglers at 42 front psi...2 less in the rear.

I might leave them there, or drop 2psi.

The Wranglers are quiet enough, but the Michelins are silent. The Wranglers looks like they are partially off-road tires, but since a gravel parking lot is as off-road as I want to go, I wanted a street tire, and I'm expecting the Michelins to tow noticeably better than the Wranglers, and the Wranglers towed pretty good.

 

Posted many times. Your TPMS will need to be reset to the new tire pressure, otherwise it isn't doing its job. Dealer or FORScan.

 

For some reason, mines reset on its own. It was showing a TPM icon on the dash, then I looked up and it was gone.

 

I was considering D or E rated tires, but because of weight and I have 20" rims, I'm consider "XL" version of passenger tires (specifically XL load range Nitto Terra Grappler G2)

I am at GVWR (7050) when towing. My GCW is 11900 lbs with 750ish hitch weight. On my test tow with the stock tires, I didn't really notice any tire issues, just an overall "jostling" feeling that I attribute to the platform. (I did add Bilsteins all way around and rear air bags) I do tow the trailer in very sandy wash so I want a more aggressive tread. My natural choice would be an D or E tire, but to stay legal I will go with the Grapplers.

 

What is meant by 'reset' is you can adjust the psi for low pressure alert. All trucks will show up to 100psi (may be higher, don't remember) in the monitor page. The only other difference behind the scenes is trailer monitoring.

 

FWIW I swapped out my P-rated tires for same size E-rated tires and no TPMS reset was needed. I went from factory recommended 35 PSI on the P's to 60 PSI on the E's. I haven't aired them up to the max of 80 PSI yet, so not sure if that would cause the TPMS to revolt.

 

I haven't had any problems or had to reset anything when I installed E rated tires on a 16, 18 and now a 19. I run them around 55 psi and that's what the TPMS shows without any warnings going off.

 

TPMS is set to alert at ~20% below the sticker. So 28 for 35.

Put on tires needing 50 without resetting via dealer or FORScan, and you could be running at 29 pounds instead of 50 with no alert. You really would want to have your TPMS alert at ~40 pounds if 50 is your regular tire pressure, no? Depends on the tire, but running a tire significantly below its intended temperature causes a lot of heat, which can destroy the tire, as well as affecting handling. And TPMS is intended to help you catch a slow leak before it gets dangerous.