Might be changing wheels for the upcoming winter, if they fit (17" aftermarket wheels I had on a 01 Accord). Is there any way to change the calibration setting so my speedo and odo read correctly when changing from 18" to 17"? What have you guys done?

 

Come on, anyone out there????

 

You can go to the dealer to have them reprogram. I'm not sure if there are any aftermarket solutions available.

 

i beleive as long as the overall diameter of the wheel is close to stock, you shouldnt have a problem.

 

yea i went with aftermarket 18s which were 29.5 in diameter and the stock 17s are 26.3 in diameter and it mybe changed my speedo 1mph at most.

 

I assume that's a typo.
=26.5 ?

 

Go to tires.com and click on the infocenter at the top. then go to tire dimensions and put in your tire size. it'll tell you the difference in circumference sidewall and diff speeds. hope it helps you. you could get a technosquare ecu too.

 

http://www.miata.net/garage/tirecalcold.html

 

Tony..as long as you get a tire that is close to the same diameter of your regular tires you will be fine.
For example I have changed from 215/55R17 to 235/45R/18 and according to my GPS my speedo is less than 1mph out at 60mph.
In the winter My snows are 215/60R16 and the speedo error is still very minimal since the diameters are all very close to each other.

As to your question about recalibrating, I don't know about these cars, but years ago I recorrected the speedo on my old muscle cars by changing the speedometer pinion gear.