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Thread: Can't change tire size anymore?

  1. #1
    Tuner in Training BluBeaSSt's Avatar
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    Can't change tire size anymore?

    I know I've been able to change the tire size on this truck before, but now whenever I go into the "Speedo" tab I get an "error" in the current tire size.

    It's a manual 2500 truck so it won't affect how it shifts but I do want to fix the speedo.

    I'm going from a 33X12.5X17 back to the stock 245/75/16 (30.5)
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    2002 Camaro SS
    2013 Jeep JK 2 Door

  2. #2
    Senior Tuner Russ K's Avatar
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    Ok, I fixed the error for you. Note that trucks with the 245/75/16 tires, use 29.79 for the tire dia. This is to allow for the reduced loaded tire radius.
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  3. #3
    Tuner in Training BluBeaSSt's Avatar
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    Thank you sir, but why does the tire section say error? Anyone know of a fix for that?
    2002 Camaro SS
    2013 Jeep JK 2 Door

  4. #4
    Tuner in Training BluBeaSSt's Avatar
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    Quote Originally Posted by Russ K View Post
    Ok, I fixed the error for you. Note that trucks with the 245/75/16 tires, use 29.79 for the tire dia. This is to allow for the reduced loaded tire radius.
    Also that didn't change it, it made it about 70mph fast LOL
    2002 Camaro SS
    2013 Jeep JK 2 Door

  5. #5
    Senior Tuner Russ K's Avatar
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    Post your stock tune.

    Russ Kemp

  6. #6
    Tuner in Training BluBeaSSt's Avatar
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    Here's my stock tune, I can't load it for some reason anymore. I emailed support about it but no word yet.
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    2002 Camaro SS
    2013 Jeep JK 2 Door

  7. #7
    Senior Tuner Russ K's Avatar
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    I can't open your stock tune with either 2.24 or 2.25, has a validation error. But looks like your trans uses a 40 tooth reluctor wheel, not a 17 tooth. So this should work now. Had to change the VSS pulses per mile and the Trans Revs/mile. And the Tire Size error will remain.

    Russ Kemp
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  8. #8
    Tuner in Training BluBeaSSt's Avatar
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    Quote Originally Posted by Russ K View Post
    I can't open your stock tune with either 2.24 or 2.25, has a validation error. But looks like your trans uses a 40 tooth reluctor wheel, not a 17 tooth. So this should work now. Had to change the VSS pulses per mile and the Trans Revs/mile. And the Tire Size error will remain.

    Russ Kemp
    That worked, thanks a ton. If you don't mind me asking. How did you change that in case I run into this again?
    2002 Camaro SS
    2013 Jeep JK 2 Door

  9. #9
    Senior Tuner Russ K's Avatar
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    Quote Originally Posted by BluBeaSSt View Post
    That worked, thanks a ton. If you don't mind me asking. How did you change that in case I run into this again?
    Had to change the VSS pulses per mile and the Trans Revs/mile.

    Russ Kemp

  10. #10
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    Russ,

    Had great Canadian friend from Regina with me in the Marine Corps in the late 60's named Merv Kennedy. When he returned there, he became a home builder. Now may have moved to South America. Know him? Had a Corvette back then.
    SOLD - 2005 C6 6.0 LS2,TF 235 heads, 245/255 .630 113 LSA cam, LS7 lifters, YT 1.7 RR, FAST 102 LSXR, VMax 90-102mm, VMax CNC ported TB, LS7 injectors, Dewitts radiator, Manley 7.550 pushrods, LS7 fuel pump, PowerBond 25% UD pulley, RPM stage 2 '06+ 4:10 rear end, Callaway CAI, 160* thermostat, HP Pro custom tune, LG Pro headers

    Now - 2016 C7 ZO6 A8

  11. #11
    Senior Tuner Russ K's Avatar
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    Quote Originally Posted by jim2092 View Post
    Russ,

    Had great Canadian friend from Regina with me in the Marine Corps in the late 60's named Merv Kennedy. When he returned there, he became a home builder. Now may have moved to South America. Know him? Had a Corvette back then.
    I was 11 years old in 1969, and didn't move to Regina until 1975. Never heard of that name.

    Russ Kemp

  12. #12
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    Russ I did open the file with 2.24 you need to update.