just got my smarty last week,played with #8 and the comp till my clutch was begging for mercy,put it on fuel saver now,my question is,i went to calibrate my speedo and in the manual it says the smarty should recognize the stock size tires and then i put it the new size tires,i tried it and it didnt recognize the stock size,it said 0.00.do i need to load the stock program to get this to work?onthe tag on my door it says i should have 245/75/16 tires and i have a set of 285/75/16.so i know my speedo is off.anyone tried the smarty tire thing with any sucsess?maybe im doing somthing wrong? thanx

 

Have to ask, but did you follow the instructions?

Specifically, the key needs to be in the "run" position.

http://www.madselectronics.com/downl...3UserGuide.pdf
Section 6.


phox

 

I believe you have to enter your tire size if other than stock and smarty will display your tire size after you enter the stock tire size.

smarty wont show a tire size until you enter it

 

Mine said 0.0 too. I just followed the directions and put in 34.25 as the closest possible number to what the tire manufacturer lists for my tire, and presto!

 

Mine showed the stock tire size and I corrected it to 32.25. Right on the money now, I used a GPS to check the speedo.

 

what program were you running when you got it to work?maybe ill put it back to stock and try again.thanx

 

Mine was set at 29.00 when I changed mine, but I had loaded SW#9 before I played with the tire calibration . I'm still having to fine tune the tire size to get it correct. The manufacturer stated tire diameter seemed to be too large. I'm just trying to get the odometer pretty close to the interstate mile markers, so I'm basically reducing the diameter 1/4 inch at a time.

Brad

 

I was running #9 when I did mine.

 

Can anyone tell me the stock tire size on a 02 drw?

 

Phatboy - Thought tire sizes were listed on plackard inside drivers door... Not sure. Don't need it anyway, right? Just enter what you have now. If you need that info...get a "build sheet" from a dealer with your VIN #.

I entered 34.50 as closest to what Toyo says for my 315/75/16's. Had to go to 34.25... than 34.00 before speedo matched a 3 mile, road side, measured distance laid out by the state???
Works fine...just surprised Smarty setting was so different from Mfg. Anyone else run into this?

RJ

 

It works on any program. No problems here.

 

Just take a tape measure and enter the diameter of your tire. I hit mine on the money the 1st time.

 

Roger. I haven't messed with this feature yet- hey- thats an excuse for trying a new SW

 

Problem with oversized tires (35's) is this dimension changes with speed... growing bigger as you go faster. Probable not so much difference with E rated/stock sized.
But on mine... big difference at 75 mph. Confusing thing to me is.... I had to go smaller, not bigger, on the Smarty, to get speedo accurate at 75 mph. Should be other way around...No?

RJ

Brad... sorry, did not see above...you ran into same problem.

 

The ABS does not always take the tire size change. This is why the display comes back and tells you what the new current size is. If it still says 0.0, then the ABS did not take the change. Try again, even a couple of times, until the returned tire size reflects what you entered.

285/75-16s with 3.54 gears takes a corretion height of 30.