| Premium Membership | |
If you would like to help support Duramax Forum, get some sweet stickers for your truck and more priveleges on Duramax Forum.com, click here |
|
| General Discussion General Diesel Discussion. |
 | 
09-28-2006, 02:27 AM
|
eBay Motors
#1 (permalink)
| | Junior Member
Join Date: Sep 2006 Location: Clover SC
Posts: 12
| Gas Milage?
I was wondering what everyone else was getting for city im getting around 13 so i was just curious if that was good... ive heard tire size can change milage but i only have 285/75/r16 on the truck | 
|  | |
Sponsored Links
| Advertisement
| | |
09-28-2006, 07:30 AM
|
eBay Motors
#2 (permalink)
| | Super Moderator
Join Date: Aug 2005 Location: Alaska
Posts: 1,607
| I am getting 16 mpg driving around base and to fairbanks a time or 2. My "city" driving really isn't that. Is your speedo recalled for the bigger tires? if not you need to add 7% to the miles traveled. Also, my numbers are hand calculated.
__________________ 2004 GMC 2500HD D/A CC Carbon Metallic w/ LB7
4" turbo back MBRP exhaust
TST Powermax Programmer, Diablosport Predator
285/75-16 BFG T/A KOs, Eagle Alloys Series 187
Clifford 2 way remote start, High Idle, Bilsteins
Extang Classic Platinum Tonneau Cover
AFE Magnum Force Stage 2 Proguard 7 intake Kennedy Diesel Merchant Automotive My Photos | |
| | |
09-30-2006, 05:57 AM
|
eBay Motors
#3 (permalink)
| | Junior Member
Join Date: Sep 2006 Location: Austin Texas
Posts: 20
| Around the city I get in the low 16's. Last weekend I went up to Dallas and got a calculated 19.1 mpg highway. 20%Bio is generally what I have been running.
__________________  Wheat- '06 2500HD LBZ CC 4x4 | |
| | |
09-30-2006, 12:35 PM
|
eBay Motors
#4 (permalink)
| | Gear Jammer...
Join Date: May 2006 Location: Mt. Pleasant PA
Posts: 1,892
| I get between 16 and 20 depending on driving style and road conditions  !!!
__________________ 05 Chevy 2500HD dark blue reg cab ZF-6 speed/W South Bend Clutch ,Power by EFI Live W/Dsp2 , PPE GT4094R, ATS CP3x2, Modified Volant intake, MBRP front pipe, 4" side pipe, Holley Blue lift pump, Isspro gauges,Cognito Braces, SD Centerlink, Caltracs, ATS Tie Rod Sleeves Best ET 12.53@ 109 mph 04.5 Chevy 2500HD, silverbirch, D/A, CC/SB , EFI live, SCIV w/ATS 5Star converter,McRat shim mod, Wicked Diesels modded FPR, Kennedy dual lift pump, Modified Volant intake, Cognito Braces,CUD tie rod Sleeves, EGR BLocker,Diamond eye Down pipe, 4" dual exhaust, Elocker, MA Tcase Fix, B&W GN Hitch Best ET 13.53 @ 101mph | |
| | |
09-30-2006, 04:01 PM
|
eBay Motors
#5 (permalink)
| | Junior Member
Join Date: Sep 2006
Posts: 19
| Mine shows 13.2 with my 20" wheels and 33" tires...It was only getting 10-11MPG before I took the lid off my factory air box!
I hand calculated miles traveled before and I was getting 11MPG pulling a car hauler with a fox body mustang on it.
The dealership tells me they can't re-calibrate the diesels. I would like to find out for sure what the truck is getting. Anyone know how to accomidate for the big wide wheels/tires?? I hear they can KILL milage and I just need a little more input on it before I decide what to do about this low milage! | |
| | |
09-30-2006, 11:34 PM
|
eBay Motors
#6 (permalink)
| | Super Moderator
Join Date: Aug 2005 Location: Alaska
Posts: 1,607
| you can always buy a handheld programmer and recal your speedo. I know htat 285/75-16 is 7% bigger than the stock tires. Check out this one: http://www.miata.net/garage/tirecalc.html
According to that, if you are running a 305/55-20, your tire is 9% bigger than stock. So, you would add 9% to your miles shown on your odometer and then divide that by the gallons used.
__________________ 2004 GMC 2500HD D/A CC Carbon Metallic w/ LB7
4" turbo back MBRP exhaust
TST Powermax Programmer, Diablosport Predator
285/75-16 BFG T/A KOs, Eagle Alloys Series 187
Clifford 2 way remote start, High Idle, Bilsteins
Extang Classic Platinum Tonneau Cover
AFE Magnum Force Stage 2 Proguard 7 intake Kennedy Diesel Merchant Automotive My Photos | |
| | |
10-01-2006, 07:27 AM
|
eBay Motors
#7 (permalink)
| | Gear Jammer...
Join Date: May 2006 Location: Mt. Pleasant PA
Posts: 1,892
| Quote:
Originally Posted by ob_1jr  you can always buy a handheld programmer and recal your speedo. I know htat 285/75-16 is 7% bigger than the stock tires. Check out this one: http://www.miata.net/garage/tirecalc.html
According to that, if you are running a 305/55-20, your tire is 9% bigger than stock. So, you would add 9% to your miles shown on your odometer and then divide that by the gallons used. |
Cool info,thanx!
__________________ 05 Chevy 2500HD dark blue reg cab ZF-6 speed/W South Bend Clutch ,Power by EFI Live W/Dsp2 , PPE GT4094R, ATS CP3x2, Modified Volant intake, MBRP front pipe, 4" side pipe, Holley Blue lift pump, Isspro gauges,Cognito Braces, SD Centerlink, Caltracs, ATS Tie Rod Sleeves Best ET 12.53@ 109 mph 04.5 Chevy 2500HD, silverbirch, D/A, CC/SB , EFI live, SCIV w/ATS 5Star converter,McRat shim mod, Wicked Diesels modded FPR, Kennedy dual lift pump, Modified Volant intake, Cognito Braces,CUD tie rod Sleeves, EGR BLocker,Diamond eye Down pipe, 4" dual exhaust, Elocker, MA Tcase Fix, B&W GN Hitch Best ET 13.53 @ 101mph | |
| | |
Sponsored Links
| Advertisement
| | | Thread Tools | | | | Display Modes |  Linear Mode | 
Posting Rules
| You may not post new threads You may not post replies You may not post attachments You may not edit your posts
HTML code is Off | | | | |
