195/65R15 vs 195/60R15Tire Size Comparison
The 3.1% diameter difference exceeds 3% and may affect speedometer accuracy.
Comparison Details
Speedometer Correction
When switching from 195/65R15 to 195/60R15, your speedometer will differ from actual speed.
| Speedometer | Actual Speed | Difference |
|---|---|---|
| 30 km/h | 29.1 km/h | -0.9 km/h |
| 40 km/h | 38.8 km/h | -1.2 km/h |
| 50 km/h | 48.5 km/h | -1.5 km/h |
| 60 km/h | 58.2 km/h | -1.8 km/h |
| 70 km/h | 67.8 km/h | -2.2 km/h |
| 80 km/h | 77.5 km/h | -2.5 km/h |
| 90 km/h | 87.2 km/h | -2.8 km/h |
| 100 km/h | 96.9 km/h | -3.1 km/h |
| 110 km/h | 106.6 km/h | -3.4 km/h |
| 120 km/h | 116.3 km/h | -3.7 km/h |
| 130 km/h | 126.0 km/h | -4.0 km/h |
Individual Tire Size Details
Practical Guidance
The 3.1% diameter difference between 195/65R15 and 195/60R15 exceeds the standard 3% tolerance. While physically possible, this change will cause noticeable speedometer error and may affect ABS and traction control calibration. Consult a tire professional before making this switch.
The 3% diameter tolerance is a widely accepted industry guideline referenced by the ETRTO and most vehicle manufacturers. When in doubt, consult your vehicle's owner's manual or a qualified tire professional. For U.S. tire safety standards and recalls, see the NHTSA Tire Safety page.
Frequently Asked Questions
Use Caution. The overall diameter differs by -3.07%, width changes by 0mm.
Speedometer error will be -3.07%. At an indicated 100 km/h, actual speed is about 96.9 km/h.
Ground clearance changes by -9.7mm per side.