Biggest Tire SIze You Can Fit With No Mods

[Eff0neFitty]

Current stock tires are 275/60/R20. What's the biggest size/diameter that can be fit without bumping into anything when you steer all the way?

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[Wakevictim]

I have 285/60/20s and have no issues. All stock. 2021 XLT

 

[nitrobass24]

Ive seen people claim 285/65/20 without a level kit on factory wheels in other threads.

 

[PB_2021]

I have a 2021 F150 Platinum crew cab long(er) bed FX4 with max tow (not really sure which of these options matters in this conversation so just listing what I think MIGHT). Factory equipped with Hankook Dynapro 275/60/20 tires.

I tow a travel trailer which weighs about 6K lb as towed.

Looking at the Cooper Discoverer (because I need to keep it quiet but want something a little bigger / better looking. Only offroad it sees is campgrounds or the sand @ Daytona Beach), in one of three sizes. Any thoughts if any / all of these will fit my completely stock truck? Also, any thoughts on if these are the right next set of quiet, more-rugged tires?

285/65
295/60
305/55

I've found various posts where tires of all these sizes fit, and others where they rubbed, for all of these sizes though not necessarily this brand/model of tire.

 

[SpaceWhiteF150]

What I’ve heard is 285/65R20 on stocks, have not tried it

 

[wessermgm]

I have 285/65/20 KO2s on my ride. I have a 2" level. I doubt they would fit without the level.

 

[fluffernutter]

I replaced the stocks with ko2s in the stock size 275/60/r20 and it rubs slightly on complete full lock (noticeable when backing into a parking spot). This is with the wheel well liners zip tied back (which helped but didn't eliminate the rubbing). I have a pb without max tow and without fx4.

 

[PB_2021]

I replaced the stocks with ko2s in the stock size 275/60/r20 and it rubs slightly on complete full lock (noticeable when backing into a parking spot). This is with the wheel well liners zip tied back (which helped but didn't eliminate the rubbing). I have a pb without max tow and without fx4.

Dang! Those K02s have quite the sharp shoulder, don't they?! Still, the stock tires must be very close, for the same size in a more-square style to rub! Yikes!

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