Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 256/60-18 | 255/85-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 30.09 (764.4) | 34.07 (865.3) | 3.97 (100.9) 13.2% |
| Width inches (mm) | 10.08 (256) | 10.04 (255) | -0.04 (-1) -0.4% |
| Circum. inches (mm) | 94.54 (2401.43) | 107.02 (2718.42) | 12.48 (316.99) 13.2% |
| Sidewall Height inches (mm) | 6.05 (153.6) | 8.53 (216.75) | 2.49 (63.15) 41.1% |
| Revolutions per mile (km) | 670.16 (416.42) | 592.01 (367.86) | -78.15 (-48.56) -11.7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.64 mph (36.44 km/h) |
| 25 mph (40.23 km/h) | 28.3 mph (45.54 km/h) |
| 30 mph (48.28 km/h) | 33.96 mph (54.65 km/h) |
| 35 mph (56.33 km/h) | 39.62 mph (63.76 km/h) |
| 40 mph (64.37 km/h) | 45.28 mph (72.87 km/h) |
| 45 mph (72.42 km/h) | 50.94 mph (81.98 km/h) |
| 50 mph (80.47 km/h) | 56.6 mph (91.09 km/h) |
| 55 mph (88.51 km/h) | 62.26 mph (100.2 km/h) |
| 60 mph (96.56 km/h) | 67.92 mph (109.31 km/h) |
| 65 mph (104.61 km/h) | 73.58 mph (118.42 km/h) |
| 70 mph (112.65 km/h) | 79.24 mph (127.52 km/h) |
| 75 mph (120.7 km/h) | 84.9 mph (136.63 km/h) |
| 80 mph (128.75 km/h) | 90.56 mph (145.74 km/h) |
| 85 mph (136.79 km/h) | 96.22 mph (154.85 km/h) |
| 90 mph (144.84 km/h) | 101.88 mph (163.96 km/h) |
| 95 mph (152.89 km/h) | 107.54 mph (173.07 km/h) |
| 100 mph (160.93 km/h) | 113.2 mph (182.18 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1507 | 1750 | 1885 | 1968 | 2058 | 2122 | 2193 | 2276 | 2391 | 2507 | 2635 | 2737 | 2923 | 3129 | 3289 | 3391 | 3449 | 3661 | 3956 | 4597 |
Better Fuel Economy Factory Ratios Increased Power
