GM Truck Club
Founded in 2004 ~ We're the #1 Chevy Truck & SUV Forum.
Silverado & Sierra | Tahoe & Yukon | Suburban & Yukon XL | SUV & CROSSOVER
Page 2 of 2 FirstFirst 12
Results 11 to 14 of 14
  1. #11
    Sr. Mechanic ChevyHD's Avatar
    Join Date
    Jan 2011
    Elberon, Iowa, United States


    Would you loose much fuel mileage going from 265's to 285's? I was looking at the exact setup.
    2004.5 CCSB Duramax
    Max Effort Tuning by Idaho Rob - Goerend Transmission - PCV ReRoute - EGR Blocked - Plugged Resonator - 5" Diamond Eye Turbo Back - Tie Rod Sleeves - All On Mod - Edge Insight CTS - Recon Taillights, Cab Lights, & 3rd Brake Light

  2. #12


    Quote Originally Posted by ChevyHD View Post
    Would you loose much fuel mileage going from 265's to 285's? I was looking at the exact setup.
    you might a little. mileage goes with weight of the tire, which will be increased most likely and rolling resistance. since it is a fairly aggressive tread pattern could lose some there. there isnt a huge difference in the tire sizes.

    31.6" diameter

    Remember your speedo will be off. you will be driving roughly 62.2 mph when the speedo reads 60.
    Heres the link for the info.
    2004 Silverado 2500 Crew Cab 4x4, AMSOIL EA air filter, Granatelli MAF sensor, Throttle body spacer, Magnaflow exhaust (true dual to 2 in 1 out muffler), 6" ProComp lift (add a leaf and 5" superlift rear block), Bilstein shocks, 35's (Cooper Disoverer ST) and 4.10 gears, Rhino Liner, EGRUSA fender Flares and widow visors, extended stainless steel brake lines, firestone airbags w/onboard air compressor, Pioneer Avic X940BT navigation, Accel backup camera.
    1960 Land Rover Series II 88
    2001 Pontiac Sunfire
    2013 Toyota Avalon Limited (Wife's Car)
    NRA Life Member

  3. #13
    Sr. Mechanic chevyman2004's Avatar
    Join Date
    Jul 2009
    southwest Minnesota


    stock was 245's, so 285 would be 4 mph difference?

    2004 Chevy Silverado 2500HD:sign0011:
    6.0L Vortec
    Magnaflow 4" Dual Exhaust
    Leveling Kit
    Westin step bars
    Penda Skid Resistor bed liner
    dark blue metallic
    Bak Industries plastic bed rail caps
    Alpine 6 1/2" SPS-600 in front
    Alpine 6 1/2" SPG-17C2 in rear
    Bilstein HD Shocks front and rear
    Goodyear Wrangler Duratracs LT265/75/R16
    Access Lorado Roll-up soft tonneau cover

  4. #14


    your right I was putting in the OP's stock size of the 265's not our trucks 245's. didnt notice he had the 2500 when he said exact setup I just assumed.


    going 64.7 when reading 60

Page 2 of 2 FirstFirst 12

Similar Threads

  1. 04 2500HD 6.0 Stock Tires
    By lewisb13 in forum Chevy Silverado Forum (GMC Sierra)
    Replies: 3
    Last: 11-13-2009, 12:13 PM
  2. WTB: stock rims
    By ChevyFarmKid in forum General Classifieds
    Replies: 7
    Last: 08-27-2009, 04:52 PM
  3. Stock rims
    By Swatchvy in forum Lifted & Offroad Suspension
    Replies: 3
    Last: 08-11-2009, 02:40 AM
  4. 2500HD with 18" rims?
    By chevyman2004 in forum Lifted & Offroad Suspension
    Replies: 3
    Last: 07-23-2009, 09:42 PM
  5. 04 2500HD rims and tires
    By dcmock in forum General Classifieds
    Replies: 2
    Last: 04-01-2009, 06:09 AM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts