215/55R17 vs 225/55R17
225/55R17 is 0.4 inches taller and 0.4 inches wider. When your speedometer says 60 mph, you'd really be doing 61.0.
I have 215/55R17
I'm looking at 225/55R17
Close match
0.4 in taller. At 60 mph on the speedometer you'd really be doing 61.0.
- Within the 3% height difference most tire shops consider safe.
215/55R17 now 225/55R17 newTo scale
At an indicated 60 mph you're really doing 61.0 mph
+0.43″
Height
+0.39″
Width
+0.22″
Sidewall
All measurements
| 215/55R17 | 225/55R17 | Change | |
|---|---|---|---|
| Overall height | 26.31″ | 26.74″ | +0.43″ |
| Section width | 8.46″ | 8.86″ | +0.39″ |
| Sidewall height | 4.66″ | 4.87″ | +0.22″ |
| Wheel size | 17″ | 17″ | same |
| Distance per turn | 82.66″ | 84.02″ | +1.36″ |
| Turns per mile | 767 | 754 | −12 |
Speedometer after switching
Your speedometer is calibrated for 215/55R17. On 225/55R17:
| Speedometer says | You're really doing |
|---|---|
| 25 mph | 25.4 mph |
| 35 mph | 35.6 mph |
| 45 mph | 45.7 mph |
| 55 mph | 55.9 mph |
| 65 mph | 66.1 mph |
| 75 mph | 76.2 mph |
What changes on the vehicle
- Ride height goes up about 0.22″ (half the height difference).
- The tire turns 12 fewer times per mile, so your odometer will read low by about 1.6%.
- The sidewall is 0.22″ taller, on the same wheels.