Just replaced the worn out stock Goodrich Rugged Trail "E" tires with Michelin Defender LTX. Of course the tire place did not fill to the right pressure....Ford says 55/60.Which go me thinking...for trailers, conventional wisdom is to inflate to max. pressure. What about tow vehicles? Is there an authoritative guide to adjusting inflation based on load?For those that care, my specs are: 2012 F-150, SCrew, 4x4, Eco, Max Tow, HD Payload - door sticker is 2166 payload. Never gave it a thought with the old tires, pulling a fifth that got me right to max. payload, and they lasted 65,000. Now with a TT, payload will be around 1,600. Tire max is 80 lbs. Should I vary from the door sticker inflation?

When not towing use the Ford recommended pressures.When towing, max pressure on the sidewall. If nothing else it will reduce the tire sidewall flex for a more stable tow and will help keep tire temps down when loaded.Adjusted when tires are cold of course.

Go with the tire plackard and you should be good. If you had a HD truck and LT tires, I would suggest 80.

4th tire pressure thread in a week!Read folks, read......

If the maximum load ( or loadindex) and Loadrange ( old LR E) are the same, you can use the same pressures.so give of both tires that maximmum load or loadindex, Loadrange or AT-pressure.and if you can find for both tires, the speedcode wich stands for maximum speed and mostly also the speed for wich the maximum load is calculated.

Grit dog wrote:4th tire pressure thread in a week!Read folks, read......Actually, I do, daily. The threads didn't show up in the last few days when clicking on "Active" to review what's going on that day.....AND.. the other threads all have mostly user opinion. Note that I asked about "authoritative" sources - implying Michelin, Ford, or other. Going all the way to 80lbs may be the best in some opinions, but that is the max., not necessarily the best for traction, handling, stopping, ride, wear, etc. Your advice should be applied to your own responses, also.

TV tire pressure? | Good Sam Community

Flapper
Explorer
May 01, 2017
Grit dog wrote:
4th tire pressure thread in a week!
Read folks, read......

Actually, I do, daily. The threads didn't show up in the last few days when clicking on "Active" to review what's going on that day.....

AND.. the other threads all have mostly user opinion. Note that I asked about "authoritative" sources - implying Michelin, Ford, or other. Going all the way to 80lbs may be the best in some opinions, but that is the max., not necessarily the best for traction, handling, stopping, ride, wear, etc. Your advice should be applied to your own responses, also.
jadatis
Explorer
May 01, 2017
If the maximum load ( or loadindex) and Loadrange ( old LR E) are the same, you can use the same pressures.

so give of both tires that maximmum load or loadindex, Loadrange or AT-pressure.
and if you can find for both tires, the speedcode wich stands for maximum speed and mostly also the speed for wich the maximum load is calculated.
Grit_dog
Navigator
May 01, 2017
4th tire pressure thread in a week!
Read folks, read......
donn0128
Explorer II
May 01, 2017
Go with the tire plackard and you should be good. If you had a HD truck and LT tires, I would suggest 80.
OldShu
Explorer
May 01, 2017
When not towing use the Ford recommended pressures.

When towing, max pressure on the sidewall. If nothing else it will reduce the tire sidewall flex for a more stable tow and will help keep tire temps down when loaded.

Adjusted when tires are cold of course.

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