bigbossman

So I'll finally be getting her TracKey'd in a couple of days. Reading through the FR guide more closely, I see

"What if I change the tire size or axle ratio after TracKey has been installed?
• Your dealer can change these settings in exchange for a nominal labor charge."

I'll be running drag radials soon so this is a concern, but I haven't heard of anyone having trouble or needing to have settings changed by the dealer--I know there are plenty of people with the red key flashed who are running various tire sizes. Thoughts on this? Thanks.

06GT

I think this only affects the speedo readout, but I'm not 100% on that. If you're planning on running DRs, I'd have the dealer set the tire size for the DRs.

bigbossman

Thanks, I'll see if they have run into this before (they've programmed 5 or 6 at this point). Odd I haven't heard of it yet as many red key threads as I've been through. Makes sense that it would change speedo (and other?) parameters though.

06GT

If you don't tell the dealer anything prior to programming, the instructions tell them to simply punch in the 285/35/19 size on the stock wheels (or whatever tire size you have on the rear when the car goes in).

cloud9

I had them punch in the stock tire size so my speedo's accurate on the street when using TK. If it's off a little at the track there won't be flashing lights in my rear view mirror....(unless it's Drew looking for a pointby)

06GT

I am a big fan of flipping the lights on when coming up on another car

bigbossman

Thanks much for the input, fellers. I wanted to make sure I wasn't about to encounter the sixth dimension when I swapped em.

LS328

Anyone know if the tire size input for the trackey can be different from the street key?

06GT

Yes.

LS328

Thanks