Helllllpppppp

[Del1968]

Work out the percentage error at a particular speed then increase or decrease the number by that amount. Rerun the car and repeat until the error is zero. I did this with Smiths gauges which are easier as you program them from the front.

Maths not my strong point would not know how or where to start to work out percentage

[ozz]

Here is a handy calculator to work out revs per mile based upon tyre size.

 

multiply by pulses per rev to get pulses per mile

 

https://tiresize.com/tyre-size-calculator/