Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 180/60-15 | 180/65-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 23.5 (597) | 24.21 (615) | 0.71 (18) 3% |
| Width inches (mm) | 7.09 (180) | 7.09 (180) | 0 (0) 0% |
| Circum. inches (mm) | 73.84 (1875.53) | 76.07 (1932.08) | 2.23 (56.55) 3% |
| Sidewall Height inches (mm) | 4.25 (108) | 4.61 (117) | 0.35 (9) 8.3% |
| Revolutions per mile (km) | 858.07 (533.18) | 832.96 (517.58) | -25.11 (-15.61) -2.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.6 mph (33.16 km/h) |
| 25 mph (40.23 km/h) | 25.75 mph (41.45 km/h) |
| 30 mph (48.28 km/h) | 30.9 mph (49.74 km/h) |
| 35 mph (56.33 km/h) | 36.06 mph (58.03 km/h) |
| 40 mph (64.37 km/h) | 41.21 mph (66.31 km/h) |
| 45 mph (72.42 km/h) | 46.36 mph (74.6 km/h) |
| 50 mph (80.47 km/h) | 51.51 mph (82.89 km/h) |
| 55 mph (88.51 km/h) | 56.66 mph (91.18 km/h) |
| 60 mph (96.56 km/h) | 61.81 mph (99.47 km/h) |
| 65 mph (104.61 km/h) | 66.96 mph (107.76 km/h) |
| 70 mph (112.65 km/h) | 72.11 mph (116.05 km/h) |
| 75 mph (120.7 km/h) | 77.26 mph (124.34 km/h) |
| 80 mph (128.75 km/h) | 82.41 mph (132.63 km/h) |
| 85 mph (136.79 km/h) | 87.56 mph (140.92 km/h) |
| 90 mph (144.84 km/h) | 92.71 mph (149.21 km/h) |
| 95 mph (152.89 km/h) | 97.86 mph (157.5 km/h) |
| 100 mph (160.93 km/h) | 103.02 mph (165.79 km/h) |
| 2.35 | 2.73 | 2.94 | 3.07 | 3.21 | 3.31 | 3.42 | 3.55 | 3.73 | 3.91 | 4.11 | 4.27 | 4.56 | 4.88 | 5.13 | 5.29 | 5.38 | 5.71 | 6.17 | 7.17 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2120 | 2462 | 2652 | 2769 | 2895 | 2986 | 3085 | 3202 | 3364 | 3527 | 3707 | 3852 | 4113 | 4402 | 4627 | 4772 | 4853 | 5150 | 5565 | 6467 |
Better Fuel Economy Factory Ratios Increased Power
