one would think that nissan could let the user/dealer/tire installer input the diameter of the tires on the car to correct the speedometer. at least the digital side of it.
comparing with "official" 5-0 radar, i have 2-3 mph more with the sr i am driving, oem wheels, and potenza re050a tires.

had a +1 size on my 01 altima and it was averaging 5mph lower at mid to high speeds.

just whining