Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 305/35-24 | 30/12.5-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 32.41 (823.1) | 30.02 (762.52) | -2.39 (-60.58) -7.4% |
| Width inches (mm) | 12.01 (305) | 12.52 (318) | 0.51 (13) 4.3% |
| Circum. inches (mm) | 101.8 (2585.84) | 94.31 (2395.53) | -7.49 (-190.32) -7.4% |
| Sidewall Height inches (mm) | 4.2 (106.75) | 6.51 (165.36) | 2.31 (58.61) 54.9% |
| Revolutions per mile (km) | 622.37 (386.72) | 671.81 (417.44) | 49.45 (30.72) 7.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.53 mph (29.82 km/h) |
| 25 mph (40.23 km/h) | 23.16 mph (37.27 km/h) |
| 30 mph (48.28 km/h) | 27.79 mph (44.73 km/h) |
| 35 mph (56.33 km/h) | 32.42 mph (52.18 km/h) |
| 40 mph (64.37 km/h) | 37.06 mph (59.64 km/h) |
| 45 mph (72.42 km/h) | 41.69 mph (67.09 km/h) |
| 50 mph (80.47 km/h) | 46.32 mph (74.54 km/h) |
| 55 mph (88.51 km/h) | 50.95 mph (82 km/h) |
| 60 mph (96.56 km/h) | 55.58 mph (89.45 km/h) |
| 65 mph (104.61 km/h) | 60.22 mph (96.91 km/h) |
| 70 mph (112.65 km/h) | 64.85 mph (104.36 km/h) |
| 75 mph (120.7 km/h) | 69.48 mph (111.82 km/h) |
| 80 mph (128.75 km/h) | 74.11 mph (119.27 km/h) |
| 85 mph (136.79 km/h) | 78.74 mph (126.73 km/h) |
| 90 mph (144.84 km/h) | 83.38 mph (134.18 km/h) |
| 95 mph (152.89 km/h) | 88.01 mph (141.64 km/h) |
| 100 mph (160.93 km/h) | 92.64 mph (149.09 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1710 | 1986 | 2139 | 2233 | 2335 | 2408 | 2488 | 2583 | 2714 | 2845 | 2990 | 3106 | 3317 | 3550 | 3732 | 3848 | 3914 | 4154 | 4489 | 5216 |
Better Fuel Economy Factory Ratios Increased Power
