Well My Tom Tom is a liar!!! Its always reading too fast and now i have put 32" tyres on instead of 29" i am doing the same speed as the Tom Tom says i am (if you follow me)

So i have a KPH reading from the dash thats wrong
A mph reading from the scan guage thats wrong
and a mph reading from the TOm Tom thats wrong


ARGHHHHHHHHHHHHHHHHHHHHHHHH

nfpgasmask

How did you set the scan guage to work correctly with the new tyre OD ???