Andrew k

What mpg could I get with a set of 37s? I will run 4.10 gears with the 610 engine.

Dodgezilla

You will probably lose about 1.5 to 2 mpg with the larger tires.....

Andrew k

Wow, I'd be very happy only losing that much with those tires. Would I lose much in the way of acceleration or power?

pittom

It depends on . rolling resistant,you could get better mpg. It will be like you have 3.73 gears. I am going to put 35 or 37s on my truck to get better mpg on hwy.I always had big tires on all my trucks and van(made it a 4x4) and what you cal on paper is not always true. I also had 44 supper swampers on my toy with a 4cyl with 5.71 gears and mpg is not bad enough to conplane about.

FUN FACTOR WINS OVER MPG

Andrew k

I agree fully! What size lift should I get to compliment the tires?

Bradleysram

Unless you get the correct wheels atleast a 6 inch lift. Offset is crucial. Which wheels were you thinking about.

cquestad

Did you not read your other post?

Andrew k

I was thinking of Mazzi Hulk 20x10 wheels. They look sweet. Yes I did read my other post but was looking for a few more opinions. I don't wan't any surprises once I spend all that money on tires, wheels, lift.

Bradleysram

Find out what the backspacing or offset is and post it here, offset perferably

Andrew k

I searched the net without being able to find the offset of the wheels. I saw a Ram 2500 with them along with 37s and they stuck out about 3" from the wheel wells. I hope that helps.

Bradleysram

Well, if the offset is +20 or more you can probably get by with a 5 inch. If it is +19 or less you will definatley need atleast 6 inchs. If you get the info post it and i ll let you know what i think

Dodgezilla

I could tell a difference in power going to the 315s which are about 34" tall.....

Fred Swanson

The 20 inch wheels are heavy. I'd find out the total combination weight. if they stick out 3 inches, then you will need a big lift to make them fit and not rub the fenders in the rear.

Is the need for 37's for looks or actual offroad usefulness?

I run 37's with factory wheels and the KORE suspension which is about 2-5 inches.

Mileage and performance will drop, as should be expected. But you can add more power!