Let's say you are running a tts extreme. Can the tire size be changed with a programmer like the quad215? We are running 315/70/r17 right now, but will be running a smaller winter tire.

While we're on the subject, shouldn't the odometer/tripometer agree with the speedometer? We have the tire size adjusted so the odometer is perfect (according to mile markers on the interstate), but the speedometer is off (4mph at 80).

We will probably be switching to the extreme sometime. Currently running the bastard stack, but the juice has been acting up. Did some minor offroading in CO a couple weeks ago, and the attitude would turn off followed by the engine stalling. Get out, shake the harnesses, back to normal. This evening, left the truck running on high idle with the a/c on for a few minutes (it was about 92 deg at the time)...Took off, and about 30 seconds later the truck let out a puff a smoke and died. Unhooked the harnesses and all was well. I guess Edge will be getting a phonecall.

Pick the tire size you run most of the time.........

I run 33.50/12.50/17's 8 months out of the year and 265's for winter tires..........so I had mine programmed for that size..........I don't worry about the speedo being off a little in the winter.

T:cool: NY
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I left mine with the stock size. Running 33's, everything is off by about 8% (including warranty!).

you cant rezap an Xtreme. Tell steve what you run most of the time and it will all be on for that.