tuna55
tuna55 MegaDork
4/20/16 8:48 p.m.

Is this an easy thing for a modern car?

I just recognized that I can take my unwanted 225/50R16 awesome tires and use them on the van which wants a 225/65R16. They are quite a it shorter, so I would want to recalibrate the speedo and odo and such, since it's the "nice" car, and Tunawife would never approve otherwise. Is this a "borrow a scan-tool and hit a few buttons" solution, or is it a " a yeah... no" sort of thing?

It's a 2011 Caravan by the way.

N Sperlo
N Sperlo MegaDork
4/20/16 11:10 p.m.

You know I was thinking the same thing this weekend, but more about my 95 F150 (not to hijack the thread). I'm pretty sure people don't usually cruise down MO-370 at 90 mph, but I'm usually in the P71.

Stefan (Not Bruce)
Stefan (Not Bruce) MegaDork
4/20/16 11:25 p.m.

Should be possible via the OBDII diagnostic solution at the dealership.

I'm not sure if you can do that with a normal OBDII tool.

tuna55
tuna55 MegaDork
4/21/16 11:23 a.m.

dealership won't do it

indie tire shop can't do it

Next?

Dusterbd13
Dusterbd13 PowerDork
4/21/16 11:56 a.m.

I know that there are Tire corrector for lifted trucks. Try a 4x4 shop?

airwerks
airwerks Reader
4/21/16 12:03 p.m.

It surprises me that no companies have come out with either a wire in or plug in signal converter. Basically a box with 2 pigtails and a knob on it to increase / decrease the signal rate.

z31maniac
z31maniac MegaDork
4/21/16 12:20 p.m.
airwerks wrote: It surprises me that no companies have come out with either a wire in or plug in signal converter. Basically a box with 2 pigtails and a knob on it to increase / decrease the signal rate.

Because playing with software calculations on a modern CAN system isn't easy.

Sure, if you have a Mustang or something it's easy. But no company is looking at hacking the ECU for MiniVans I suspect.

Stefan (Not Bruce)
Stefan (Not Bruce) MegaDork
4/21/16 12:28 p.m.

http://dodgeram.org/tech/mods/electric/pinion_factor.htm

http://www.dodgetalk.com/forums/showthread.php?t=345649

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