Better tire size for fuel ecomomy???

BlackedOut02 · 07-22-2009, 11:33 PM

ok yall the truck needs new tires. im debating between the toyo proxys 285/60/17 (30.46'') or the nitto terra grapplers 285/70/17 (32.71'').

id like the little taller tire to keep the rpms down, but idk if that would be off set by its heavyer weight or not??

__________________

'02 | 2WD | 2500 | NV4500

"Diesels dont run away. Diesels over speed, mechanics run away"

MikeyB · 07-23-2009, 09:03 AM

With the shorter tire the engine will be turning more rpms, which usually doesn't help with the fuel economy. The 70 series is taller than stock and might give you a little better economy, but don't count on it. I didn't see much of a change in fuel economy going up to the 285/70/17 size.

MikeyB

__________________
'03 2500 QC SWB 2wd, 305/555, NV5600, 3.73 LS, Airbox mod w/Amsoil Ea, Adjustable boost elbow, PML diff cover, Westach boost/EGT gauge, Line-X, Sirius, Toyo OC AT 285/70/17 E, Daystar 1.5" lift, Monroe Reflex, Raptor RP100, Lazarsmith Intake, Smarty/Van Aaken C3.2

ESAFO · 07-23-2009, 09:16 AM

i just put 285-75 nitto terra grapplers & gained 1/2mpg by adding bigger size (33.86) x (11.3)

__________________

04.5 QCSB 2500>4x4 Laramie>Auto>4.10'z>AFE Stg II>Silencer Ring "MIA"

>2nd Gen Intake Horn>STR8 Pipe/6in.Tip>Superchip>Escort x50 "BLUE" (cop catcher)> 285/75 Terra Grapplers

BlackedOut02 · 07-23-2009, 11:35 AM

hua.. so i guess im looking about the same mpg either way. that 285/75 is even taller than 285/70, and esafo only gain 1/2 an mpg.

how do those terra grapplers do on the road? traction, road noise, ext.??

__________________

'02 | 2WD | 2500 | NV4500

"Diesels dont run away. Diesels over speed, mechanics run away"

ESAFO · 07-23-2009, 11:41 AM

1/2mpg is good for a free gain. great in the rain, specially last night. have not been in a STICKY situation yet. road noise NONE, IMHO they look like the correct size that should of came on it from the factory.

__________________

04.5 QCSB 2500>4x4 Laramie>Auto>4.10'z>AFE Stg II>Silencer Ring "MIA"

>2nd Gen Intake Horn>STR8 Pipe/6in.Tip>Superchip>Escort x50 "BLUE" (cop catcher)> 285/75 Terra Grapplers

BlackedOut02 · 07-23-2009, 09:19 PM

im droping my rear a couple of inches, so im hoping the 285/70's would have the same effect.

__________________

'02 | 2WD | 2500 | NV4500

"Diesels dont run away. Diesels over speed, mechanics run away"

ESAFO · 07-23-2009, 10:13 PM

Quote:

Originally Posted by BlackedOut02

im droping my rear a couple of inches, so im hoping the 285/70's would have the same effect.

if you tow alot, i would be concerned about lowering the rear.

__________________

04.5 QCSB 2500>4x4 Laramie>Auto>4.10'z>AFE Stg II>Silencer Ring "MIA"

>2nd Gen Intake Horn>STR8 Pipe/6in.Tip>Superchip>Escort x50 "BLUE" (cop catcher)> 285/75 Terra Grapplers

usmc5593 · 07-23-2009, 10:39 PM

295 70r 17's, no 60's they are to short

BlackedOut02 · 07-24-2009, 01:02 AM

Quote:

Originally Posted by ESAFO

if you tow alot, i would be concerned about lowering the rear.

i dont even have a hitch on it anymore

dose that mean i neutered my truck??

__________________

'02 | 2WD | 2500 | NV4500

"Diesels dont run away. Diesels over speed, mechanics run away"

BlackedOut02 · 07-24-2009, 01:10 AM

Quote:

Originally Posted by usmc5593

295 70r 17's, no 60's they are to short

i was thinking of the 295/70's too. (there a fuzz cheaper too)

why no 60's? too short of a tire? too short of a sidewall? explain??

a 285/60/17 is 30.46'', and 245/75/16 (stock) is 30.47''. so its the same height is what came on my truck.

__________________

'02 | 2WD | 2500 | NV4500

"Diesels dont run away. Diesels over speed, mechanics run away"

Last edited by BlackedOut02 : 07-24-2009 at 01:13 AM.

ESAFO · 07-24-2009, 08:01 AM

if you go widder than it takes away from the height.

__________________

04.5 QCSB 2500>4x4 Laramie>Auto>4.10'z>AFE Stg II>Silencer Ring "MIA"

>2nd Gen Intake Horn>STR8 Pipe/6in.Tip>Superchip>Escort x50 "BLUE" (cop catcher)> 285/75 Terra Grapplers

cksh8me · 07-24-2009, 09:35 AM

285/75 17 Toyo AT's I have about 9k on them great tire so far. Quiet good off road traction, nice ride. I recalc'd my speedo and my mileage picked up to 21. If they last 40k I'll buy them again. "E" load rating carry 3790 lbs.

07-22-2009, 11:33 PM	#1 (permalink)
BlackedOut02 Diesel Head Join Date: Feb 2008 Location: In the Effin Getto, LA Posts: 2,496 Thanks: 38 Thanked 51 Times in 39 Posts BlackedOut02's Truck Pics	Better tire size for fuel ecomomy??? ok yall the truck needs new tires. im debating between the toyo proxys 285/60/17 (30.46'') or the nitto terra grapplers 285/70/17 (32.71''). id like the little taller tire to keep the rpms down, but idk if that would be off set by its heavyer weight or not?? __________________ '02 \| 2WD \| 2500 \| NV4500 "Diesels dont run away. Diesels over speed, mechanics run away"

07-23-2009, 09:16 AM	#3 (permalink)
ESAFO Sold, Please Delete! Join Date: Nov 2008 Location: HUBBARD, OHIO Posts: 2,530 Thanks: 6 Thanked 48 Times in 47 Posts ESAFO's Truck Pics	i just put 285-75 nitto terra grapplers & gained 1/2mpg by adding bigger size (33.86) x (11.3) __________________ 04.5 QCSB 2500>4x4 Laramie>Auto>4.10'z>AFE Stg II>Silencer Ring "MIA">2nd Gen Intake Horn>STR8 Pipe/6in.Tip>Superchip>Escort x50 "BLUE" (cop catcher)> 285/75 Terra Grapplers

07-23-2009, 11:41 AM	#5 (permalink)
ESAFO Sold, Please Delete! Join Date: Nov 2008 Location: HUBBARD, OHIO Posts: 2,530 Thanks: 6 Thanked 48 Times in 47 Posts ESAFO's Truck Pics	1/2mpg is good for a free gain. great in the rain, specially last night. have not been in a STICKY situation yet. road noise NONE, IMHO they look like the correct size that should of came on it from the factory. __________________ 04.5 QCSB 2500>4x4 Laramie>Auto>4.10'z>AFE Stg II>Silencer Ring "MIA">2nd Gen Intake Horn>STR8 Pipe/6in.Tip>Superchip>Escort x50 "BLUE" (cop catcher)> 285/75 Terra Grapplers

07-24-2009, 08:01 AM	#11 (permalink)
ESAFO Sold, Please Delete! Join Date: Nov 2008 Location: HUBBARD, OHIO Posts: 2,530 Thanks: 6 Thanked 48 Times in 47 Posts ESAFO's Truck Pics	if you go widder than it takes away from the height. __________________ 04.5 QCSB 2500>4x4 Laramie>Auto>4.10'z>AFE Stg II>Silencer Ring "MIA">2nd Gen Intake Horn>STR8 Pipe/6in.Tip>Superchip>Escort x50 "BLUE" (cop catcher)> 285/75 Terra Grapplers

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07-23-2009, 09:03 AM	#2 (permalink)
MikeyB Diesel Head Join Date: Jan 2006 Location: Tomball, Texas Posts: 1,187 Thanks: 2 Thanked 27 Times in 26 Posts MikeyB's Truck Pics	With the shorter tire the engine will be turning more rpms, which usually doesn't help with the fuel economy. The 70 series is taller than stock and might give you a little better economy, but don't count on it. I didn't see much of a change in fuel economy going up to the 285/70/17 size. MikeyB __________________ '03 2500 QC SWB 2wd, 305/555, NV5600, 3.73 LS, Airbox mod w/Amsoil Ea, Adjustable boost elbow, PML diff cover, Westach boost/EGT gauge, Line-X, Sirius, Toyo OC AT 285/70/17 E, Daystar 1.5" lift, Monroe Reflex, Raptor RP100, Lazarsmith Intake, Smarty/Van Aaken C3.2

07-23-2009, 11:35 AM	#4 (permalink)
BlackedOut02 Diesel Head Join Date: Feb 2008 Location: In the Effin Getto, LA Posts: 2,496 Thanks: 38 Thanked 51 Times in 39 Posts BlackedOut02's Truck Pics	hua.. so i guess im looking about the same mpg either way. that 285/75 is even taller than 285/70, and esafo only gain 1/2 an mpg. how do those terra grapplers do on the road? traction, road noise, ext.?? __________________ '02 \| 2WD \| 2500 \| NV4500 "Diesels dont run away. Diesels over speed, mechanics run away"

07-23-2009, 09:19 PM	#6 (permalink)
BlackedOut02 Diesel Head Join Date: Feb 2008 Location: In the Effin Getto, LA Posts: 2,496 Thanks: 38 Thanked 51 Times in 39 Posts BlackedOut02's Truck Pics	im droping my rear a couple of inches, so im hoping the 285/70's would have the same effect. __________________ '02 \| 2WD \| 2500 \| NV4500 "Diesels dont run away. Diesels over speed, mechanics run away"

07-23-2009, 10:39 PM	#8 (permalink)
usmc5593 Cummins Fanatic Join Date: Jul 2009 Location: Corpus Christi, Tx Posts: 101 Thanks: 2 Thanked 0 Times in 0 Posts usmc5593's Truck Pics	295 70r 17's, no 60's they are to short

07-24-2009, 09:35 AM	#12 (permalink)
cksh8me Cummins Fan Join Date: Sep 2008 Location: castaic ca Posts: 92 Thanks: 0 Thanked 1 Time in 1 Post cksh8me's Truck Pics	285/75 17 Toyo AT's I have about 9k on them great tire so far. Quiet good off road traction, nice ride. I recalc'd my speedo and my mileage picked up to 21. If they last 40k I'll buy them again. "E" load rating carry 3790 lbs.