tire size and towing

[TXXD]

Howdy, first post here. i am about to pick up a 2021 f150 5.0 CC 4wd LWB with tow pkg, 3.73 gears. first steps i will be adding a leveling kit and going with 20x9 wheels. I am going back n forth on which tire size though... a 33" tire at 275/60/20 OR a 34" tire at 275/65/20
i tow a 6k lbs TT anywhere from 2x to 10x a year, very random on when we decide to go camp/hunt/etc.. im in TX, so not extremely full of inclines, but is hot a bulk of the year. some additional trips would be with simply a 12ft utility trailer hauling a small utv.

any and all input from those that have ran these tire sizes or similar setups would be greatly appreciated!

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[EricR]

Why the 20" wheels?

 

[TXXD]

Why the 20" wheels?

was hesitant about going to 20s but had a great deal in 2019 on a truck with 20s with 33" tires, so i went with it. never had a ding on the wheels with my amount of off roading in 5.5yrs., and shorter/stiffer sidewall seemed to be better when towing (with D and E rated tires). i liked the image, so would like to duplicate it, even considering taking 1 step up in tire size to the 34"

 

[UGADawg96]

I went with LT285/60R20 less than a month after purchase. We tow a 6500lb TT 2-6x/year. Now have over 30k on them and they are still great and would replace with the same when they wear out.

https://www.f150gen14.com/forum/threads/yokohama-geolandar-g015-lt285-60r20.7572/

https://www.f150gen14.com/forum/thr...tate-park-north-georgia-2800-elevation.28956/

 

[FaaWrenchBndr]

The truck is going to tow better with the smaller tire size. With that being said, doubt going 1” larger will affect the abilities much.

 

[Mtnman1]

Howdy, first post here. i am about to pick up a 2021 f150 5.0 CC 4wd LWB with tow pkg, 3.73 gears. first steps i will be adding a leveling kit and going with 20x9 wheels. I am going back n forth on which tire size though... a 33" tire at 275/60/20 OR a 34" tire at 275/65/20
i tow a 6k lbs TT anywhere from 2x to 10x a year, very random on when we decide to go camp/hunt/etc.. im in TX, so not extremely full of inclines, but is hot a bulk of the year. some additional trips would be with simply a 12ft utility trailer hauling a small utv.

any and all input from those that have ran these tire sizes or similar setups would be greatly appreciated!

Buying a truck for towing and leveling is your first plan?

Very weird. I would not waste the money

 

[CND Supercrew]

This chart will give some reference:
https://tiresize.com/gear-ratio-calculator/

 

[TXXD]

Buying a truck for towing and leveling is your first plan?

Very weird. I would not waste the money

did it to all 3 trucks ive had over the previous 24 years without an issue. done by lots of folks without issue. its a daily driver as well as light towing. i want the appearance as well as the performance. if the truck is too level i can add a 1/2" to 1" block in the rear. sag too much when loaded, i can add air bags or a helper leaf.

 

[lrb_35128]

Factory 265/60R20s on mine. I just made certain the load rating of the tires exceeded frame capacity.

 

[Calson]

The difference in circumference of less than 5% is not going to make a difference. As you already have 3.73 gears I would not worry about it.

With the F-150 the payloads are so low that even the passenger tires supplied by Ford are good enough.

 

[SpaceWhiteF150]

With 3:73s you’re golden! I’d run a light 275/65R20 or 285/65R20, I wouldn’t go 33s these trucks need 34-35s!

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