The 225/45/17 is real close
225/50-16 Overall Diameter 24.86
225/45/17 Overall Diameter 24.97
225/50-16 Circumference 78.09
225/45/17 Circumference 78.45
With your current 225/50/-16… if your speedometer now reads 65… with the 225/45-17 it will read 65.29
The tire width for both tires sizes is the same… 8.86
