odometer

[ralaubach]

Does any one know where and how the odometer takes its reading?

 

[ralaubach]

Anyone. reason I ask is I am wondering if I resize my wheels on my computer, will the odometer be adjusted with it. And if I put the wrong size in, will the odometer end up being short/long on how many miles it has actually gone.

 

[Gone-broke]

Changing wheels and tires will screw up the Speedo, which feeds the odo, if the overall OD changes.
I had to but a tuner to calibrate mine when I went to 305/50/20's.

So answer to your question is yes. Adjust the Speedo and the odor will follow..lol

Sent while I was supposed to be working...

 

[Hammer_Z71]

Same place as the speedo, right off the ring gear. So YES, changes to tire diameter will effect the odometer the same as it will the speedometer.

I have 35s now but have used my tuner to recalibrate. On my 2nd Gen by contrast, I ran 35s but never did recalibrate the speedo, I knew from GPS how fast I was really going in comparison to the speedo and gauged my driving accordingly. I knew I'd always at least be close enough by guestimate not to get a speeding ticket. I suspect that when I traded it in with 68k on the clock, whoever bought it from the dealer was actually getting a truck with 70k+ miles on it, LOL...

 

[Wanderer]

I have 33 inch 20's I run in the summer and 31.5 inch 17's for the winter. The speedometer and odometer is off about 5% with the larger tire. I learned to live with it, just remember the speedometer is slow if you like the press your luck on the highway. I have heard that the dealer charges anywhere fom $40-100 for the reprogram. At that price, buy a used tuner and get the extra benefits and fun for a few more pennies.