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Recalibrating PCM for Tires?

This is a discussion on Recalibrating PCM for Tires? within the Wheels and Tires forums, part of the General Help category; I just ordered some Z06 c6 chrome wheels. 18 x 9.5 with 57mm offset all four around. I got a ...

  1. #1
    Impwnded Smkn_TA's Avatar
    Join Date
    May 2007
    Davenport, Iowa

    Bright Red
    1999 Trans Am Ws6

    Recalibrating PCM for Tires?

    I just ordered some Z06 c6 chrome wheels. 18 x 9.5 with 57mm offset all four around. I got a '99 trans am ws6. So what are my options for tire sizes was hoping to go with a 260 - 275 tire. I want to know what I can go without throwing off my speedo/abs. Plus how to go about recalibrating the pcm for new tires if I go for a bigger tire.


  2. #2
    Super Moderator
    mrr23's Avatar
    Join Date
    Jul 2005
    orlando, fl

    2014 camaro 2ss/rs

    did this help?
    tire size equivalents

    to recalibrate, you'll need a programmer or tuning suite to change the settings in the PCM.
    Cold Air Intake, Muffler Delete, Vinci High Performance Dual Valve Springs, Hardened Pushrods, Yella Terra 1.85 Rockers, Some Hydropdipped Stuff, Strut Tower Brace, Some SS Badges, boost/vacuum gauge, fuel pressure gauge

  3. #3
    Crazy Canuck ! Eugenio_SS's Avatar
    Join Date
    Jun 2002
    Montreal, CANADA

    2000 CamaroSS convertible

    if you go w/ a 275/35-18, same exact overal diameter... no need for any calibration.
    almost stock triple-black 2000 SS convertible with 17x11s on all 4 w/ 315s at the track or on the street with 18x10.5s on all 4 w/ 315s: (1), (2)

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