Fuel Mileage

[RedBowTies88]

Originally Posted by DMAXchris

Beech, I'm gonna have to disagree.
Tires have a lot to do with mileage. Those are 33s. Stock is 29.5. Thats almost 4 inches in height difference.
I'm willing to bet that he would pick up 2 mpgs with 245/75R16s

thats true in general chris but you gotta remember us 5 speed guys with stock wheels and tires turn 2450rpm at 75

so if you do a lot of highway the taller tires help believe it or not...

but at the same speed.rpm, your right smaller tires are better

[DMAXchris]

Originally Posted by RedBowTies88

thats true in general chris but you gotta remember us 5 speed guys with stock wheels and tires turn 2450rpm at 75

so if you do a lot of highway the taller tires help believe it or not...

but at the same speed.rpm, your right smaller tires are better

Whoa. Thats pretty high. I'm at 1950 going 75. That makes sense to me now.

[tcharon]

Originally Posted by DMAXchris

Whoa. Thats pretty high. I'm at 1950 going 75. That makes sense to me now.

How did you get there? Did you change gearing or use really big tires & have you checked speed with your GPS? I run 265-75s, stock gearing & set my speedo for my tires & it matches my GPS & I get 65mph @ 2000 RPMs. Let me know if I'm wrong, but if you have stock gears like me, you'd have to be running 37" tires.

[DMAXchris]

Originally Posted by tcharon

How did you get there? Did you change gearing or use really big tires & have you checked speed with your GPS? I run 265-75s, stock gearing & set my speedo for my tires & it matches my GPS & I get 65mph @ 2000 RPMs. Let me know if I'm wrong, but if you have stock gears like me, you'd have to be running 37" tires.

I have a 6 speed silly.
I'm not running stock tranny programming either. You can change cruising RPMs a little with EFI.

[tcharon]

Originally Posted by DMAXchris

I have a 6 speed silly.
I'm not running stock tranny programming either. You can change cruising RPMs a little with EFI.

Right, didn't notice you have an 06.

[RedBowTies88]

Originally Posted by DMAXchris

Whoa. Thats pretty high. I'm at 1950 going 75. That makes sense to me now.

yea when when i was runnin the 315's i actually got better highway mileage...but around town has been about similar..

if i just slowed the hell down to 65 i would be fine but we all know that's not going to happen

[kansas]

I took a trip this weekened 250 miles 1 way bone stock everything including tires I got 18.8 mpg figured by hand showed 19.9 on the readout at 70 mph Im thinking with a mouth piece and some tuning that 21-22 mpg is possible.

[SilverStreak82]

i get 18-20 city and 23+ hwy. i do have stock tires right now though.

[RedBowTies88]

^ with an lly?.....i dunno man you hand calculate that? sounds a little high

[kansas]

Wanna sell it wow ive never heard of that usually figure 11 to 13 in town and 17 to 22 tops maybe 23 downhill with a tail wind on the highway.

Originally Posted by SilverStreak82

i get 18-20 city and 23+ hwy. i do have stock tires right now though.