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1 more ? on tire + size

Discussion in 'Chevy Trucks' started by RichG53, Oct 14, 2008.

  1. RichG53

    RichG53 PlowSite.com Addict
    Messages: 1,135

    Does wider tires get you less MPG...?? More rubber resistance on the road...Does tire size change the rear gearing...
  2. brad96z28

    brad96z28 PlowSite.com Addict
    Messages: 1,525

    Yes to both slightly.
  3. B&B

    B&B PlowSite Fanatic
    Messages: 12,777

    Only tire diameter changes the effective gear ratio. Width makes no difference.
  4. Milwaukee

    Milwaukee 2000 Club Member
    Messages: 2,180

    and speedometer will be show slow than normal but miles will be low to spin due big tires then you need programmer or change gear teeth.
  5. rcpd34

    rcpd34 Senior Member
    from MD
    Messages: 688

    I saw a noticable decrease inmileage going from 245's to 285's. I finally settled on 265's as a compromise. Wider tires may also decrease your mpg as you will have more rolling resistance.