Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 255/50-21 | 245/60-19 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 31.04 (788.4) | 30.57 (776.6) | -0.46 (-11.8) -1.5% |
| Width inches (mm) | 10.04 (255) | 9.65 (245) | -0.39 (-10) -3.9% |
| Circum. inches (mm) | 97.51 (2476.83) | 96.05 (2439.76) | -1.46 (-37.07) -1.5% |
| Sidewall Height inches (mm) | 5.02 (127.5) | 5.79 (147) | 0.77 (19.5) 15.3% |
| Revolutions per mile (km) | 649.76 (403.74) | 659.63 (409.88) | 9.87 (6.13) 1.5% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.7 mph (31.71 km/h) |
| 25 mph (40.23 km/h) | 24.63 mph (39.63 km/h) |
| 30 mph (48.28 km/h) | 29.55 mph (47.56 km/h) |
| 35 mph (56.33 km/h) | 34.48 mph (55.48 km/h) |
| 40 mph (64.37 km/h) | 39.4 mph (63.41 km/h) |
| 45 mph (72.42 km/h) | 44.33 mph (71.34 km/h) |
| 50 mph (80.47 km/h) | 49.25 mph (79.26 km/h) |
| 55 mph (88.51 km/h) | 54.18 mph (87.19 km/h) |
| 60 mph (96.56 km/h) | 59.1 mph (95.12 km/h) |
| 65 mph (104.61 km/h) | 64.03 mph (103.04 km/h) |
| 70 mph (112.65 km/h) | 68.95 mph (110.97 km/h) |
| 75 mph (120.7 km/h) | 73.88 mph (118.89 km/h) |
| 80 mph (128.75 km/h) | 78.8 mph (126.82 km/h) |
| 85 mph (136.79 km/h) | 83.73 mph (134.75 km/h) |
| 90 mph (144.84 km/h) | 88.65 mph (142.67 km/h) |
| 95 mph (152.89 km/h) | 93.58 mph (150.6 km/h) |
| 100 mph (160.93 km/h) | 98.5 mph (158.53 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1679 | 1950 | 2100 | 2193 | 2293 | 2364 | 2443 | 2536 | 2664 | 2793 | 2936 | 3050 | 3257 | 3486 | 3664 | 3779 | 3843 | 4079 | 4407 | 5122 |
Better Fuel Economy Factory Ratios Increased Power
