spock345
Well-known member
- Joined
- Nov 3, 2016
- Location
- Livermore, CA
At some point in its life my 122s was converted from a BW35 to an M40. The speedometer is a bit off. Using a GPS speedometer on my phone I have found it reading a bit fast. It will read 35mph when in actuality I am going 25mph. The error is significant enough that I have decided to try to fix it. I replaced the speedometer cable because mine was sticky and the rubber casing had melted away (someone let it sit on the exhaust), that fixed how jumpy it was. I verified it has the 16 tooth yellow gear for a 4.10:1 rear end ratio, which should be the same between an M40 and a BW35.
Is there anything different about the speedometer on automatic cars or is it just badly out of spec? Is there anything in these that can get stuck or need lubrication? I have found information about stuck or slow speedometers but nothing about then running fast.
I am running 165/80r15 tires on the stock 15x4 wheels.
Is there anything different about the speedometer on automatic cars or is it just badly out of spec? Is there anything in these that can get stuck or need lubrication? I have found information about stuck or slow speedometers but nothing about then running fast.
I am running 165/80r15 tires on the stock 15x4 wheels.