Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 29.5/10.5-15 | 305/45-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 29.51 (749.46) | 28.81 (731.7) | -0.7 (-17.76) -2.4% |
| Width inches (mm) | 10.51 (267) | 12.01 (305) | 1.5 (38) 14.2% |
| Circum. inches (mm) | 92.7 (2354.5) | 90.5 (2298.7) | -2.2 (-55.79) -2.4% |
| Sidewall Height inches (mm) | 7.25 (184.23) | 5.4 (137.25) | -1.85 (-46.98) -25.5% |
| Revolutions per mile (km) | 683.52 (424.72) | 700.11 (435.03) | 16.59 (10.31) 2.4% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.53 mph (31.42 km/h) |
| 25 mph (40.23 km/h) | 24.41 mph (39.28 km/h) |
| 30 mph (48.28 km/h) | 29.29 mph (47.14 km/h) |
| 35 mph (56.33 km/h) | 34.17 mph (54.99 km/h) |
| 40 mph (64.37 km/h) | 39.05 mph (62.85 km/h) |
| 45 mph (72.42 km/h) | 43.93 mph (70.7 km/h) |
| 50 mph (80.47 km/h) | 48.82 mph (78.56 km/h) |
| 55 mph (88.51 km/h) | 53.7 mph (86.42 km/h) |
| 60 mph (96.56 km/h) | 58.58 mph (94.27 km/h) |
| 65 mph (104.61 km/h) | 63.46 mph (102.13 km/h) |
| 70 mph (112.65 km/h) | 68.34 mph (109.98 km/h) |
| 75 mph (120.7 km/h) | 73.22 mph (117.84 km/h) |
| 80 mph (128.75 km/h) | 78.1 mph (125.7 km/h) |
| 85 mph (136.79 km/h) | 82.99 mph (133.55 km/h) |
| 90 mph (144.84 km/h) | 87.87 mph (141.41 km/h) |
| 95 mph (152.89 km/h) | 92.75 mph (149.26 km/h) |
| 100 mph (160.93 km/h) | 97.63 mph (157.12 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1782 | 2070 | 2229 | 2328 | 2434 | 2509 | 2593 | 2691 | 2828 | 2964 | 3116 | 3237 | 3457 | 3700 | 3889 | 4011 | 4079 | 4329 | 4678 | 5436 |
Better Fuel Economy Factory Ratios Increased Power
