Opinions on towing overweight compared to vehicle weight rating.

rear axle and tire rating seems to be the biggest hurdle when you do all the math. Also double check the rims
 
Oh man, if we are talking bigger tires, I will give my input.

Changing tire size from OEM effectively changes the gear ratio in the diffs.
That change goes in the wrong direction.
For example, you truck comes from Ford with 3.73 gears.
You change tires, always bigger, you change that effective gear ratio down to say a 3.55, depends on tire size change. There are calculators out there to help with that.

GVWR and GCWR are dependent on gear ratio.

Essentially, you change tires to bigger, you change your gear ratio the wrong way, you lower your effective tow ratings. GVWR and GCWR will go down.
This is really getting into the weeds, but it is reality.
 
lincster said:
Oh man, if we are talking bigger tires, I will give my input.

Changing tire size from OEM effectively changes the gear ratio in the diffs.
That change goes in the wrong direction.
For example, you truck comes from Ford with 3.73 gears.
You change tires, always bigger, you change that effective gear ratio down to say a 3.55, depends on tire size change. There are calculators out there to help with that.

GVWR and GCWR are dependent on gear ratio.

Essentially, you change tires to bigger, you change your gear ratio the wrong way, you lower your effective tow ratings. GVWR and GCWR will go down.
This is really getting into the weeds, but it is reality.
Click to expand...
I would definitely keep the stock tire size on whatever I buy.
 
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