Speedometer Calculation

Asked by Nov 03, 2014 at 04:04 PM about the 2011 Chevrolet Silverado 1500 LT Crew Cab 4WD

Question type: General

I had 265/70/18 tires installed on my 2011 Silverado 1500 4wd. I think the speedometer is
off now. Is there an easy DIY solution? Thanks in advance. The factory tires were
265/65/18.

4 Answers

10,965

You can use this conversion table to calibrate your speedometer: http://tire-size-conversion.com/speedometer-calibration/ OR you you can reprogram the ECU to make the MPH correct on the gauge with a tool like this: http://www.hypertech-inc.com/products-speedometer-calibrator.aspx

1 out of 1 people think this is helpful.
10,965

After entering your tire sizes, you're only about 2 mph off (slower) on the MPH gauge than the stock tires. Not much to worry about unless you want to get the speedometer dead accurate. Going from a 70 to a 65 series is not a huge jump so it's not that far off.

1 out of 1 people think this is helpful.

When I calculated it from http://tire-size-conversion.com/speedometer- calibration it says + 2 mph not - 2 still not a major difference, but you stated (slower).

10,965

Ahhh.. Sorry about that. Yes you are correct. My mistake. Smaller tires = faster speedometer. Thanks for the correction.

Your Answer

Add photo

Related Questions

  • Tire size 1 answer

    I just purchased a 2015 Silverado crew cab LT 2wd. Stock tire and wheel 255 70 17. I want to go with a 20 inch wheel and an all terrain tire. I don't want to do a leveling kit. Would a 275 55 20 ti...

    2015 Chevrolet Silverado 1500 LT

    -

    General

  • When towing 1000 lbs I drop 8mpg. is thois normal? 8 answers

    I have a 2015 1500 5.3L 4x4 Silverado. I'm towing a 14x6 (15" tires single axel) utility trailer (200lbs) with an ATV loaded (600lbs) and I'm dropping in MPG from 19.3 to 11. Is this normal?

    2015 Chevrolet Silverado 1500 LT 4WD

    -

    General

  • 92 chevy k1500 stepside camshaft help 8 answers

    im about to purchase a 92 stepside for myself, we used to have one with only a few things done to it, upgraded ignition, intake, exhaust and headers. Id like to upgrade the camshaft or possibly do a...

    Chevrolet Silverado 1500

    -

    Car Customization

  • P205/65R15 CAN BE REPLACED BY P205/65R16? 3 answers

    can i replace tire size mentionned above

    2006 Chevrolet Malibu LS

    -

    General

  • 79 Blazer 1 answer

    Bought a 79Blazer 350. Does anyone know the MPG? Going back to the states to pick it up in WA and drive it to IL. I got to calculate how much to save for gas. Thanks

    1979 Chevrolet Blazer

    -

    General

Silverado 1500

Looking for a Used Silverado 1500 in your area?

CarGurus has 168,314 nationwide Silverado 1500 listings starting at $1,950.

ZIP:

Search Chevrolet Silverado 1500 Questions

Chevrolet Silverado 1500 Experts

#1 John Carson
John Carson
Reputation 2,110
#2 Rowefast
Rowefast
Reputation 1,790
#3 Silverado_owner_2006
Silverado_owner_2006
Reputation 1,610
View All

Related Models For Sale

Used GMC Sierra 1500
854 Great Deals out of 66,786 listings starting at $1,995
Used Ford F-150
2,311 Great Deals out of 210,526 listings starting at $1,499
Used Dodge Ram 1500
442 Great Deals out of 11,342 listings starting at $1,000
Used Chevrolet Silverado 2500HD
321 Great Deals out of 27,098 listings starting at $1,250
Used Toyota Tundra
516 Great Deals out of 33,556 listings starting at $3,400
Used Toyota Tacoma
505 Great Deals out of 39,604 listings starting at $2,900
Used Chevrolet Tahoe
564 Great Deals out of 27,717 listings starting at $1,999
Used Ram 1500
944 Great Deals out of 114,452 listings starting at $6,396
Used Chevrolet Colorado
231 Great Deals out of 23,800 listings starting at $2,200
Used Chevrolet Camaro
164 Great Deals out of 33,235 listings starting at $1,995
Used Ford F-250 Super Duty
351 Great Deals out of 47,749 listings starting at $1,795
Used Ford Mustang
375 Great Deals out of 47,165 listings starting at $1,999
Used Dodge Charger
284 Great Deals out of 27,074 listings starting at $2,500

Used Cars For Sale

2017 Chevrolet Silverado 1500 LT Crew Cab 4WD For Sale
31 Great Deals out of 28,676 listings starting at $32,995
2016 Chevrolet Silverado 1500 LT Crew Cab 4WD For Sale
31 Great Deals out of 1,356 listings starting at $28,499
2015 Chevrolet Silverado 1500 LT Crew Cab 4WD For Sale
22 Great Deals out of 1,494 listings starting at $22,499
2014 Chevrolet Silverado 1500 LT Crew Cab 4WD For Sale
33 Great Deals out of 2,118 listings starting at $17,990
2013 Chevrolet Silverado 1500 LT Crew Cab 4WD For Sale
41 Great Deals out of 1,711 listings starting at $11,750