Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 245/75-16.5 | 305/55-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 30.97 (786.6) | 30.21 (767.3) | -0.76 (-19.3) -2.5% |
| Width inches (mm) | 9.65 (245) | 12.01 (305) | 2.36 (60) 24.5% |
| Circum. inches (mm) | 97.29 (2471.18) | 94.9 (2410.54) | -2.39 (-60.63) -2.5% |
| Sidewall Height inches (mm) | 7.23 (183.75) | 6.6 (167.75) | -0.63 (-16) -8.7% |
| Revolutions per mile (km) | 651.25 (404.66) | 667.63 (414.84) | 16.38 (10.18) 2.5% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.51 mph (31.4 km/h) |
| 25 mph (40.23 km/h) | 24.39 mph (39.25 km/h) |
| 30 mph (48.28 km/h) | 29.26 mph (47.1 km/h) |
| 35 mph (56.33 km/h) | 34.14 mph (54.95 km/h) |
| 40 mph (64.37 km/h) | 39.02 mph (62.79 km/h) |
| 45 mph (72.42 km/h) | 43.9 mph (70.64 km/h) |
| 50 mph (80.47 km/h) | 48.77 mph (78.49 km/h) |
| 55 mph (88.51 km/h) | 53.65 mph (86.34 km/h) |
| 60 mph (96.56 km/h) | 58.53 mph (94.19 km/h) |
| 65 mph (104.61 km/h) | 63.41 mph (102.04 km/h) |
| 70 mph (112.65 km/h) | 68.28 mph (109.89 km/h) |
| 75 mph (120.7 km/h) | 73.16 mph (117.74 km/h) |
| 80 mph (128.75 km/h) | 78.04 mph (125.59 km/h) |
| 85 mph (136.79 km/h) | 82.91 mph (133.44 km/h) |
| 90 mph (144.84 km/h) | 87.79 mph (141.29 km/h) |
| 95 mph (152.89 km/h) | 92.67 mph (149.14 km/h) |
| 100 mph (160.93 km/h) | 97.55 mph (156.99 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1699 | 1974 | 2126 | 2220 | 2321 | 2393 | 2473 | 2567 | 2697 | 2827 | 2971 | 3087 | 3297 | 3528 | 3709 | 3825 | 3890 | 4128 | 4461 | 5184 |
Better Fuel Economy Factory Ratios Increased Power
