Someone correct me if I'm wrong here (pertaining to my assumptions of how an odometer works & records mileage)...
215/45/17 diameter - 625.3 mm
225/45/17 diameter - 634.3 mm
*circumferences are of the same proportion
So your odometer should record [(625.3/634.3) x 100] = 98.58 miles for every 100 miles you travel.
