225/50R17 vs 225/55R17 Side-by-side tire size comparison with specs and compatibility
Compatibility
+3.43% diameter difference
⚠ Swap with Caution
This tire swap is between 3-5% diameter difference. Check for fender clearance and be aware of speedometer error. May require recalibration.
Full Specifications Comparison
| Specification | 225/50R17 | 225/55R17 | Difference |
|---|---|---|---|
| Overall Diameter | 656.8 mm (25.9") | 679.3 mm (26.7") | +22.5 mm |
| Section Width | 225 mm (8.9") | 225 mm (8.9") | 0 mm |
| Sidewall Height | 112.5 mm | 123.8 mm | +11.3 mm |
| Circumference | 2063.4 mm | 2134.1 mm | +70.7 mm |
| Revolutions/Mile | 780 | 754 | -26 |
| Aspect Ratio | 50% | 55% | +5% |
| Rim Diameter | 17" | 17" | 0" |
Key Impact Summary
Ground Clearance
+11.3 mm
Speedometer Error
+3.43%
Width Change
0 mm
Sidewall Change
+11.3 mm
Speedometer Correction Table
When switching from 225/50R17 to 225/55R17, your speedometer will under-read. Here is the correction at common speeds:
| Speedometer Shows | Actual Speed (mph) | Difference |
|---|---|---|
| 30 mph | 31 mph | +1 mph |
| 40 mph | 41.4 mph | +1.4 mph |
| 50 mph | 51.7 mph | +1.7 mph |
| 60 mph | 62.1 mph | +2.1 mph |
| 70 mph | 72.4 mph | +2.4 mph |
| 80 mph | 82.7 mph | +2.7 mph |
| 90 mph | 93.1 mph | +3.1 mph |
| 100 mph | 103.4 mph | +3.4 mph |
| 110 mph | 113.8 mph | +3.8 mph |
| 120 mph | 124.1 mph | +4.1 mph |
What This Swap Means
Taller sidewall: The 11.3mm increase in sidewall height provides a more comfortable ride by absorbing more road imperfections. Taller sidewalls also offer better protection against pothole damage to wheels. The trade-off is slightly less responsive steering feel.
Ground clearance: Increases by 11.3mm, providing slightly better approach angles for off-road driving and speed bump clearance.
Vehicles Using 225/50R17
Vehicles Using 225/55R17
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Individual Tire Specs
Frequently Asked Questions
This swap requires caution. The diameter difference is +3.43% (+22.5mm). This exceeds the recommended 3% threshold and may affect speedometer accuracy, ABS calibration, and could cause clearance issues.
Switching from 225/50R17 to 225/55R17 creates a +3.43% speedometer error. Your actual speed will be faster than displayed — at an indicated 60 mph, you'll actually be going 62.1 mph.
Switching from 225/50R17 to 225/55R17 changes ground clearance by +11.3mm. The vehicle will sit 11.3mm higher. Ground clearance change equals half the overall diameter difference.