Automotive - tire size
What is the difference between 215/45R17 and 225/40R18 tires?
Answer
+11.9
mm overall diameter
637.2 mm − 625.3 mm = 11.9 mm (1.90%)
How we got there
- 01215/45R17: sidewall 96.8 mm, total diameter 625.3 mm
- 02225/40R18: sidewall 90.0 mm, total diameter 637.2 mm
- 03Difference: 11.9 mm (1.90% — speedometer error in same direction)
Want to try other values?
Compare any tire sizes →Related answers
- What is the difference between 225/45R17 and 235/40R18 tires?
- What is the difference between 205/55R16 and 225/45R17 tires?
- What is the difference between 235/35R19 and 245/35R19 tires?
- What is the difference between 195/55R16 and 205/50R17 tires?
- What is the difference between 255/40R18 and 275/35R18 tires?
- What is the difference between 185/60R15 and 195/50R15 tires?