Forum Discussion
MitchF150
Oct 22, 2019Explorer III
Depends on what "diameter" of the tire you are looking to reduce?
I've got OEM 20" wheels on my 13 F150. Stock size is 275/55/20. They are about 32" tall overall.
The OEM spare tire for my truck is an 18" wheel diameter...
They are basically the same overall height of 32".
Your brother might be thinking that reducing the overall height of the tire is better.. And yes, that will change your final rear gear drive ratio, but then you will have to re-calibrate your speedo/odo depending on where you go with it..
Most folks go for taller tires and want that "big tire look", and that's all fine and dandy, but if you increase the overall height of your tires, to say, 33" or 35" or taller, you are changing your overall gear ratio for the worse if TOWING is your goal..
I'd stick with the stock size tire and if you get a #5000 GVWR TT (not #5000 dry weight) you should be just fine..
Good luck!
Mitch
I've got OEM 20" wheels on my 13 F150. Stock size is 275/55/20. They are about 32" tall overall.
The OEM spare tire for my truck is an 18" wheel diameter...
They are basically the same overall height of 32".
Your brother might be thinking that reducing the overall height of the tire is better.. And yes, that will change your final rear gear drive ratio, but then you will have to re-calibrate your speedo/odo depending on where you go with it..
Most folks go for taller tires and want that "big tire look", and that's all fine and dandy, but if you increase the overall height of your tires, to say, 33" or 35" or taller, you are changing your overall gear ratio for the worse if TOWING is your goal..
I'd stick with the stock size tire and if you get a #5000 GVWR TT (not #5000 dry weight) you should be just fine..
Good luck!
Mitch
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