37" Tires on Raptor.

[johnlocal3]

Raptizzle,

Thankyou for the picture showing the firewall mod that is exactly what I was looking for.

Now about the gas milage, does 2"s really drop you're mpg to a noticable level? Same thing with the speedometer, is it adjustable?

My main reason for getting the bigger tires was more aesthetic than anything. I like the more aggressive slightly taller look.

 

[Humvee21]

I agree with Raptizzle.

 

[Raptizzle]

Raptizzle,

Thankyou for the picture showing the firewall mod that is exactly what I was looking for.

Now about the gas milage, does 2"s really drop you're mpg to a noticable level? Same thing with the speedometer, is it adjustable?

My main reason for getting the bigger tires was more aesthetic than anything. I like the more aggressive slightly taller look.

No worries... Believe it or not, I haven't even done this mod to my truck (yet) but my shop did this for Chrisandalex's. He was running 35's but the offset on his 20" rims were so extreme that they rubbed really bad. Even my 37's with a 0mm offset wheel had less rubbing issues than his.

I haven't re-calibrated my instrument gauges because I'm really not all that worried but I'm sure it's possible. The mileage difference isn't all that bad but c'mon, we didn't buy these trucks to be concerned with MPG's...

 

[BIRDMAN]

Wider would provide more surface area, not taller.

Aside from looking more aggressive, I think there are more negatives than positives.

1) Speedo is now not accurate.
2) Our already ****** gas milege is now even worse
3) Firewall and suspension mods required
3) More weight

They do look good, I admit that!

he's right, well you both are...but a taller tire will provide a longer contact surface area. wider tires provide a wider contact surface area.

 

[INI]

Bigger tire means bigger holes you can roll through. Both of our Trophey Trucks run 39s and we also have 42s now.

Bigger tire
Ground Clearence - you say it doesn't matter but you can always use another inch
Tire size equals more contact on the ground - yes and yes

I will take pics of the TT. If you want to go for a ride let me know. I will glady arrange a
"test" so you can see the difference between 2-4 inches

You will be shocked I promise

 

[GRT4DRT]

5-star tune should take care of #1 & #2.....

 

[INI]

The five star tune makes adjustments for the speedo???

Where is that setting on the custom tuner??

5-star tune should take care of #1 & #2.....

 

[crashmc302]

On my 2007 F150 XLT, I put a Superchip programmer in it that mounted on the dash. All I had to do was go thru piece by piece and recalibrate it for 35s, 4.10 gears, and so on. I don't see why you couldn't find a programmer that does the same for your Raptor

 

[kman54]

am i crazy or do those say 35's?

---------- Post added at 07:50 PM ---------- Previous post was at 07:48 PM ----------

Your truck looks great...and ADV1 are tested for the Raptor. Also, what did you do to get that much rwhp with exhaust and a tune?

dont these adv wheels say 35's? not 37s?

 

[TheJoker]

Look's like 35x12.50R20LT