loose RPM gain MPG

Asked by cdnanorthwind Jun 30, 2016 at 05:27 PM about the 1998 Dodge RAM 2500 Laramie SLT Club Cab 4WD

Question type: Car Customization

my 98 ram quadcab  runs 2200 rpm @ 62 mph by increasing tire and rim size i
hope to drop my rpm. what is the biggest road tire (circumference) that can be
possibly install on this truck

3 Answers
158,945

Bob answered 8 years ago

Put too big of tire and wheel on will actually make the fuel mileage go down. Also when changing tire sizes you have to consider odometer and speedometer error when figuring fuel mileage.

Mark helpful

cdnanorthwind answered 8 years ago

why does a bigger road tire lower my MPG. the 5.9 has enough torque at lower RPM. my thought is that instead of messing with gear ratio i can accomplish the same with larger tire circumference.. the truck has 245/75 r16 mounted now with lots of fender clearance. the speedometer difference can be remedied very easily.

Mark helpful
158,945

Bob answered 8 years ago

Bigger tires have increased rolling resistance, they are less aerodynamic and they weigh considerably more. They will take slightly more power to get rolling and keep rolling.

Mark helpful

Your Answer:

Related Questions

  • loose RPM gain MPG 3 Answers

    my 98 ram quadcab runs 2200 rpm @ 62 mph by increasing tire and rim size i hope to drop my rpm. what is the biggest road tire (circumference) that can be possibly install on this truck

    1998 Dodge RAM 2500 Laramie SLT Club Cab 4WD

    -

    Car Customization

  • Straightpipe-Power Gain??? 11 Answers

    I have been debating whether to straight pipe my 6.7, take out just the muffler not the DPF. The main reason i want to do thid is for power gain and fuel economy towing. I was wondering if anyone has ...

    Dodge RAM 2500

    -

    Car Customization

  • poor mpg 13 Answers

    i got a 2005 ram 2500 with a 5.7 hemi ,is there any way to increase fuel milage only gettinf around 11mpg thanks

    2005 Dodge RAM 2500

    -

    Car Customization

  • What is the MPG difference between 18" and 20" tires on 2500 diesels 1 Answer

    2014 Ram 2500 diesel megacab

    2010 Dodge RAM 2500

    -

    Car Customization

  • what is DIESEL MPG ? on 4wd 33 Answers

    Saw the listed 15 models of 1995 Dodge Ram 2500 and the MPG- BUT did not see Diesel models MPG. Want to know for the 1995 long bed extended cab, four-wheel drive automatic 5.9L Cummins Turbo Diesel...

    1995 Dodge RAM 2500

    -

    General

RAM 2500

Looking for a Used RAM 2500 in your area?

CarGurus has 27 nationwide RAM 2500 listings starting at $4,000.

Postal Code:

Shortcuts

Search Dodge RAM 2500 Questions

CarGurus Experts

  • #1
    Dan Connell
    Reputation
    5,610
  • #2
    Tony Williams
    Reputation
    1,650
  • #3
    Ram2500Diesel
    Reputation
    1,600
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Chevrolet Silverado 2500HD
20 Great Deals out of 1,146 listings starting at $8,999
Used Ford F-250 Super Duty
27 Great Deals out of 1,201 listings starting at $8,995
Used Dodge RAM 3500
29 listings starting at $13,888
Used Dodge RAM 1500
4 Great Deals out of 80 listings starting at $4,000
Used Ford F-150
299 Great Deals out of 15,725 listings starting at $1,712
Used Ford F-250
6 listings
Used Chevrolet Silverado 1500
171 Great Deals out of 5,940 listings starting at $3,995
Used Ford F-350 Super Duty
36 Great Deals out of 2,603 listings starting at $8,888
Used GMC Sierra 1500
128 Great Deals out of 6,854 listings starting at $3,975
Used Toyota Tacoma
54 Great Deals out of 1,033 listings starting at $8,708

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.