Speedo Calabration for Bigger Tyres

[Clarky]

YES it works on a WH CRD & it can change diff ratios!
For all those that have changer tyre size & need to correct there speedometer I have a solution.


The Hypertech 752501 is designed specifically for Chrysler/Jeep, it will change tyre size (up or down) & differential ratios.

It also reads DTC's, even Jeep specific codes (yes the one that locks out low range) & clears them

Very simple to operate with on screen step by step instructions with simple yes/no/up/down buttons. All up it took me less then 30 min to change tyre size (4 times) till I was happy & speedo matched the GPS (speedo 99/GPS 100).

http://www.sfxperformance.com/parts/HYP752501.htm

[Bomber]

I'd be re-calibrating to make it the other way around. In these days of 3km over fines nothing wrong with a safety margin.

Also, test it at lower speeds. I find my speedo at lower speeds more accurate eg 61/60 GPS/speedo vs 103/100.

[Gojeep]

Thanks for passing that on. I will have to do something with mine once it is on the road as will have 32"'s.

[patience]

Great find Clarky, we're now finding more and more options and accessories for our WH's

[mercury68]

Originally Posted by patience

Great find Clarky, we're now finding more and more options and accessories for our WH's

I hope it keeps on continuing as I have alot of things I wish to add to the WH but can't find anything suitable for my purposes.

[Clarky]

Originally Posted by Bomber

I'd be re-calibrating to make it the other way around. In these days of 3km over fines nothing wrong with a safety margin.

Also, test it at lower speeds. I find my speedo at lower speeds more accurate eg 61/60 GPS/speedo vs 103/100.

Yeh I typed it ass about face I ment speedo 100km GPS 99km