tire size callibration

[brentwood]

I still can't change my tire size on my trinity. I've tried by diameter and by metric size numerous times. Is there a fix for this?

[mikel]

vehicle?
revision?
error?

Help me, help you

[brentwood]

2012 Dodge Ram

I'll get back to you with the exact error msg

[mikel]

if it says it failed after you set the tire size and cycle the key, it lied

it is working.....

[mopar11]

if it says it failed after you set the tire size and cycle the key, it lied

it is working.....

Thanks for the laugh.

[brentwood]

i'm running v.1r09f

ok, so it says failed after trying to callibrate like you said.

[brentwood]

do i have to reinstall the tune or is it modified on my currently installed tune?

[mikel]

no, the tune is unaffected.

I am serious, when it says it failed, it lied, as long as it had you enter the values and cycle the key.
You can confirm with GPS

[brentwood]

ok, thanks for your help.

[djwintz]

I bought a 2012 Ram 1500. It had 17in tires, I put on 20's and put the #'s in the Trinity. Now the speedo is 10 kms different then my GPS. How do I get the proper speedo reading?

[mikel]

make some adjustments to the settings until it is correct

[djwintz]

Got it figured out, thanks Mikel. Was not hitting the enter button after each entry. Works good if ya do it properly, lol.