295/70/18 on 5.0L with 3.31 gears?

[bcaseyk]

I’m looking for input on how my truck’s performance would be affected by adding a tire much larger/heavier than the stock 275/65/18 tires. Obviously I can expect a hit to my MPG, will I be setting my transmission up for failure as well?

The stock rake and tire size isn’t a pleasing sight to my eyes, and I’d like to give it the GigEmAggies03 treatment (link below), but I don’t want to be driving a turtle either.

Here are 295/70R18 Nitto Ridge Grapplers on the stock 18" sport wheels. Fit perfect, no rubbing!

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[Tizzzo]

You'll feel the difference in acceleration since its more rotational mass you're taking on, but with the 10 speed I'm sure the acceleration wont be too bad since it can always down shift to a lower gear for more power. I'm sure you'll be fine, you just wont have the same take off as 3.73 gear trucks. If you don't want to lose too much performance just go with a less aggressive set up like a 2inch lift instead of 2.25 or 2.50, and slightly smaller tire like a 285/70/18 instead of 295/70/18.

 

[SFBR]

Do it.

 

[Rapid Red]

I want to take off (training wheels) 245-70-17, & upgrade to a 275-65-18 combo. I talked to a couple of ford dealerships, and they weren’t sure that it was in the VID block, in the engine computer. They said it would cost 1 hr of shop time $135 to see if they could change it. They said they could not be sure if they could change it. It’s a lot of money to see IF They could do it? Does anyone know? It’s a stock tire on a super cab, but not on a regular cab.

 

[Rdmiller185]

Do it.

What tire size is this? what offset is the wheel?

 

[Graygoose2021]

That does look good!

 

[ChadSmith]

I’m looking for input on how my truck’s performance would be affected by adding a tire much larger/heavier than the stock 275/65/18 tires. Obviously I can expect a hit to my MPG, will I be setting my transmission up for failure as well?

The stock rake and tire size isn’t a pleasing sight to my eyes, and I’d like to give it the GigEmAggies03 treatment (link below), but I don’t want to be driving a turtle either.

I have a 5.0L with 3.31 gears and 295/70R18 tires. I'm pleased with how my truck rides and drives. Obviously a little slower than it was stock and fuel economy took a hit as well, but it was worth it to me to have the truck look and sit the way I wanted it to.

Like @Tizzzo said, you'll notice it most in city driving where it's a little more sluggish off the line than it was before, but it's not terrible. On the highway it's not really a noticeable difference.

Worst-case scenario if you do it and you don't like it then you could always opt to install lower gears. Hope this helps.

 

[FTLBS]

What tire size is this? what offset is the wheel?

From the thread below, this appears to be 295/70R18 tires with 18x9+1 wheels

https://www.f150gen14.com/forum/thr...build-readylift-fuel-nitto-line-x-tyger.1780/

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