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If the 275's are replacing a 245 your speedo will not be accurate, just enter the change in you diablo and be done with it!
David
David
But in the Diablo there's only one option for changing size, so is for the front or back that is? It would have been more logical if you could change both front and back wheel settings.If the 275's are replacing a 245 your speedo will not be accurate, just enter the change in you diablo and be done with it!
David
My speedo is accurate and I run 275/40/20s out back. I did not change tire size with my tuner.If the 275's are replacing a 245 your speedo will not be accurate, just enter the change in you diablo and be done with it!
David
More likely is that the radar being used has not been calibrated in years.I have the exact same set up and was pulled over last week. I'm off by 4 mph