I deal with this on a daily basis. Load rating has very little to do with tow rating.
I get people with 1/2 ton trucks who insist on E load tires all the time.
Let's sit back and look at things logically for a second.
Load rating is what the tire can carry. And tow rating is what then truck can tow. When you tow only the tounge weight is on the tires of the tow vehicle.
If you are towing 8000lbs and have a tongue weight of 800lbs the rear tires are only carrying 800lbs of the 8000. The trailer tires are taking on the rest.
A properly equipped 2022 f150 is certified to tow 14,000lbs (2wd, regular cab 3.5 eco.......) and still does not come from the factory with E load tires.
It is against Federal law to make a vehicle with tires that are under rated for the vehicles capabilites. For example my wife's car has a top speed of approximately 170mph, BUT it is speed limited from the factory to 150, this was because the manufacturer did not believe the average person would appreciate the extra speed but would appreciate the cost savings of a cheaper tire and as such equipped a speed limiter and installed OEM tires with a 150 mph rating.
Also against the law to install a tire of lesser capacity than the vehicle/oem. You own a Corvette Z06, you get Z rated tires. I do not care if you are 85 and only go for coffee on sunny days with it.
Obviously I can install tires that are over rated, I can put Z rated on a prius if the owner wants.
E load is okay on F150 but it is over rated. Standard F150 comes with SL or XL tires so C rating of the Raptor is actually higher than F150 rated for 14,000lbs towing.
