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Re: Speed reading way high

Posted: Thu Nov 07, 2024 4:44 am
by tommchris
beetos wrote: Tue Nov 01, 2022 12:47 am Hi
New set up here, BMW N54 s7+ 1.699.

Speed is reading too high by a factor of around 1.5

Base map the tooth count on the wheel inputs is 69. I need to look at the toothed rings on the hubs to verify. Dry tyre circumference looks about right at 2.0m. Wheel speeds come in over CAN (ABS), teeth per reading is set at 1. I’ve looked at the other threads on this and some say change dry tyre diameter. Sprunki

Would varying tooth count not be more effective way to calibrate speed? Pics of my stock ABS rings appear to be 48 teeth.

Also, can someone explain what ‘radar’ speed input is and its relevance in speed related functions?
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