[michbmw]

Hello,

I've done a ton of reading about the speedo's being off 2-3mph, and have verified mine is the same with my cell's GPS as well as a regular GPS. I have done coding for BC_DIGITAL_V so that i can see my digital speedometer.

Since then i have tried setting BC_V_KORREKTUR & BC_DIGITAL_V_KORREKTUR to nicht_aktiv which did correct my digial speedometer so now that is almost the exact same as my GPS and Cell (pretty awesome actually).

Everything i have read says that we cannot fix the Analog speedometer, i just wanted to shoot out a quick question to the Guru's out there to see if that is still true...any help is appreciated

I'm hoping there is a newer thread out there that i missed which indicates how to fix it. Pretty weird looking when your digial speedometer on your gauge cluster says 48mph while your speedometer needle is pointing at 50mph

[cn555ic]

Only way adjusting that is taking out the needle of speedometer and reinstalling the needle one click from original position

[pinky_and_me]

Someone was experimenting with some other values that define the actual correction percentage and I think they got pretty close but the concern was it was dependent on the car and wheels/tires and at the time it was mostly try a value and see how good it is.
So it wasn't really worth the time.

[michbmw]

Cool thanks for the responses, what are other people doing then living with the difference between the two? or do they set BC_V_KORREKTUR & BC_DIGITAL_V_KORREKTUR back to aktiv so they don't see the difference and just drive slower than they actually are?

[michbmw]

Originally Posted by cn555ic

Only way adjusting that is taking out the needle of speedometer and reinstalling the needle one click from original position

Have you tried this? curious on how hard it is to do

[pinky_and_me]

Originally Posted by michbmw

Cool thanks for the responses, what are other people doing then living with the difference between the two? or do they set BC_V_KORREKTUR & BC_DIGITAL_V_KORREKTUR back to aktiv so they don't see the difference and just drive slower than they actually are?

I keep the digital on in case some cop clocks me or if I know there is a good chance of it in some area, other than that butt dyno works good enough for me

Plus the difference is noticeable past 100 mph and I don't drive highway that often.

[michbmw]

are cops still really anal in Ohio? whenever i go to cedar point i have to be careful i don't go more than 5 over on the highway, seems like you'll get pulled over if you do. when driving on I75 once i cross the state line back to michigan i speed up to 80 or so

[AndyR83]

I keep my digital speedometer set to the "real" value.

[pinky_and_me]

Originally Posted by michbmw

are cops still really anal in Ohio? whenever i go to cedar point i have to be careful i don't go more than 5 over on the highway, seems like you'll get pulled over if you do. when driving on I75 once i cross the state line back to michigan i speed up to 80 or so

Yes, and they mostly use laser so I had to get a laser jammer on top of the radar detector. They go out only certain days of the month, unfortunately you never know which ones.

[michbmw]

i got pulled over for going 69 in a 65 once, i was in shock

[cn555ic]

Originally Posted by michbmw

Have you tried this? curious on how hard it is to do

I didnt do it to mine as I am fine with it not reading the same as the digital speedo but when I had my led cluster done the guy who installed it had the dial off by 2 to 3 miles and had to take the dial off and reposition it to original spot. Look at the DIY on led cluster replacement and it shows you how to get to the dials and remove them. Mark a spot where the original location is and then reinstall the dial one mm and it should be enough to be exact to the digital speedo. To me it's not even worth it though

[michbmw]

Yeah I've decided to live with it as is. At least for now

[wdlfbio]

I have the corrected digital VO shown and rarely ever look at the analog gauge. 6% over sucks. I want to know my exact speed at all ranges. Our cops are big revenue generators.

[Sparafucile]

Originally Posted by michbmw

i got pulled over for going 69 in a 65 once, i was in shock

In a '65-what? I know that's hard to do in a '65 Vette.

[bmorebblick]

I am going to have to get the digital to show up... How hard is coding these things?? =)

Anyone know if you can use the JB4 to hijack the speedometer to show something useful???

[The Die]

I made the change for the Analog and now it's still off, but the digital is correct. Guess I won't be looking at the analog gauge much...

[koolit]

I hate when the analog is doing 65 while the portable GPS is at 60. I slapped in 255x40x18 in the rear and I could swear the Analog + Digital Speedo and Porta Navi speed is right on target, they all agree

My car looks taller with bulky tires. So go ahead hate me. But hey, I am more for comfort not for looks.

One more thing, been driving car to work for the past 2 years @ 45.1 miles each way on the register. The mileage dropped to 41.8 each way with oversized tires. Do I save on gas, mileage accrual or both?

[UDM_2012]

I was not willing to put up with the speedometer error. I changed to 255/40-18 rear and 225/45-18 front. My speedo is now very accurate at highway speeds, problem solved. I like the look, and the improved ride, the decreased risk of rim damage. A side effect is my odometer is not accurate, a nice feature when you are leasing...

[koolit]

^+1... Same principle here 225x45x18 front & 255x40x18 rear. Speedo is right on. Rolling circumference slightly bigger.

[b1mmr]

Originally Posted by michbmw

are cops still really anal in Ohio? whenever i go to cedar point i have to be careful i don't go more than 5 over on the highway, seems like you'll get pulled over if you do. when driving on I75 once i cross the state line back to michigan i speed up to 80 or so

I live in Ohio - owned a streetbike around 2013 and long story short I got my license suspended for 12 points in 2 years.. Total bs as they targeted me left and right but we all managed to treat each other with respect and the judge was lenient. Overall I've not had many issues in the BMW in the past 1.5 year of ownership and the one time was totally my fault lol.