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-   -   New to the M3 game and I have a few questions (http://www.bimmerfest.com/forums/showthread.php?t=621568)

j0rn3z 05-17-2012 04:09 PM

New to the M3 game and I have a few questions
 
So I just got my first M3 the other day, its a 1995 M3 and I absolutely love it. I But I noticed earlier it felt like I was speeding but my speedometer said I was doing the speedlimit, so I cut on my gps and it showed to be about 8mph off. That being said, I decided to take it to redline and see what it does, and the rev limiter hit at 6000 rpms and from what i've read its not until 6,500 on a stock chip in first gear. The car does have a bigger tire size, will that cause my RPM and MPH to be off? If not, what are some things I can do to fix this? Ive calibrated my gauges earlier and it did not help. Any help is appreciated.

ARM3N 05-17-2012 04:57 PM

well the stock size is 235/40/17
whats the "bigger" size on now?
this website can tell you if the tires are causing a change in your speedometer reading and if its more or less.

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

hope that helps

j0rn3z 05-17-2012 05:04 PM

Its a 235/45/17. Any idea why my gauge cluster would say my redline is at 6?

Sent from my SGH-T959V using Bimmer App

j0rn3z 05-18-2012 12:09 AM

Well I recalibrated my gauges again, everything is dead on now

Sent from my SGH-T959V using Bimmer App

X3-terrestrial 05-18-2012 07:31 AM

Quote:

Originally Posted by j0rn3z (Post 6842029)
Well I recalibrated my gauges again, everything is dead on now

Sent from my SGH-T959V using Bimmer App

How'd you do that?

ECSTuning 05-18-2012 09:00 AM

Glad you got it sorted. The tire sizes will effect the speedometer slightly, but not the tach.

damalex 10-25-2012 09:14 PM

I seen a thing on YouTube where you can calibrate the cluster you just hold the trip reset down as you turn the key on an they reset works on OBD2 not sure about OBD1


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