I have never purchased aftermarket wheels before. I have been doing some research, but I have questions. My 2019 came with 17's. Can I go to 18's or 20's with no modifications?
I will post a pic of my rims and you will see why I want to change them.
I would like to fill in the wheel well some.
I don't get offset and back spacing either. I am not going to lift it also.

 

Yes you can fit 18s and 20s with no modifications. Honestly just put a 2 inch level on the front and throw some 33s on it, that's what I got. 275/60R20. Looks perfect IMO.

 

Did your mpg change with the 33's?
Good looking truck by the way!!!!!

 

It didn't change much that I noticed, but I have a lead foot anyway so my mileage is crappy lol. Helps that the tires are not heavy because they are P rated. A lot of the big tires you see guys putting on here are LT rated, which is heavier and honestly not really needed. Stick to P rated IMO.

 

OP, your tire is more than likely a 245/70-17 with a +/- 30.5" overall diameter. Tire diameter is a consideration when figuring "effective" final drive gearing.

I would agree that a 33" (a 285/70-17 tire is 32.8" dia.) would look good, and be the upper limit in a bigger tire without the need to change axle gearing. Still, though, you would be making the truck's effective final drive gearing "taller", meaning slower to accelerate.

Too, an LT tire will be heavier than a P-Metric, but the biggest effect a tire will have on fuel mileage will be it's tread pattern. A mud tire (M/T) will have the highest rolling resistance and can effect your average MPG by 2.0 mpg.

If you're not going to lift your truck then consider a 265/70-17 tire, and in a P-Metric All Terrain (A/T). This would be your best bet for a slightly bigger tire, and give you the best possible fuel economy after a tire size upgrade. Good luck.

 

Apples thanks. My truck has 265/65/17's now. I bought this truck used 14k miles. I think the previous owner changed them or the dealer did , they are brand new.

Also I have searched the inter web and I cannot find an other 2019 F150 with these rims.

 

265/70R17 should have been standard on a 4x4.
Check the tire information placard in your door jamb to confirm.

Offset is how far the wheel mounting flange is from.the center of the wheel.

0mm would mean the flange is 3.75" inches from the tire mounting surface on each side (7.5" Wheel).

+45mm (Factory I think) means the wheel mounting flange is moved OUT 45mm (1.8") which moves the tire IN that far

Negative would be the opposite like an old deep dish on a 60's Musclecar to help clear the leaf springs with wide tires.

Be careful on this because tire and wheel shops will sometimes use reverse of correct terminology. I would ask backspace as well just to make sure we are using the same terms.
Backspace is simply how much distance from the back of the wheel to the wheel mounting flange. The wrench in comparing the two is backspace is just what it's called. Not how far to the tire mounting surface.

You might have a 7.5" Wide wheel with 0 Offset and the backspace might be 4.23" because it's 3.75" to the tire seating surface but the wheel rim is 0.48" thick and included in the backspace measurement.

Without known measurements the rim is usually assumed to be 1/2 inch think. IE a 8" Wheel with 0 Offset is 4" to tire seating surface and 4.5" Backspace.

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OEM installation of a 265/70 may have been the case, but judging by this particular photo, that isn't a 265/70 on there now.

Bah. Nevermind. If Tarkus says they're 265/65? then that would explain the short sidewall height.

 

I thought they looked very 11th-generation to me. They're a 2004-2008 chrome clad steel wheel (chrome face over steel rim), definitely not a 2019 rim.

Likely, one of these 2 rims would have been on your truck from factory, 18-inch alloy (left) or 17-inch steel (right).

 

That is odd. Those old wheels and mis-sized tires on there.

Thinking someone swapped wheels with the older truck before trading. They got good tires, larger tires and upgraded wheels and took it to the dealer with old tires. The dealer simply put new tires of the same size on the wheels back on there instead of correct tires by door placard. I suspect your odometer is recording high as well.

Even a set of 275/65R18 takeoffs with tires would help with the looks a lot.



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