Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 245/75-15 | 30/9.5-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 29.47 (748.5) | 29.99 (761.78) | 0.52 (13.28) 1.8% |
| Width inches (mm) | 9.65 (245) | 9.49 (241) | -0.16 (-4) -1.6% |
| Circum. inches (mm) | 92.58 (2351.48) | 94.22 (2393.2) | 1.64 (41.72) 1.8% |
| Sidewall Height inches (mm) | 7.23 (183.75) | 7.5 (190.39) | 0.26 (6.64) 3.6% |
| Revolutions per mile (km) | 684.4 (425.26) | 672.46 (417.85) | -11.93 (-7.41) -1.7% |
30/9.5-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.35 mph (32.76 km/h) |
| 25 mph (40.23 km/h) | 25.44 mph (40.95 km/h) |
| 30 mph (48.28 km/h) | 30.53 mph (49.14 km/h) |
| 35 mph (56.33 km/h) | 35.62 mph (57.33 km/h) |
| 40 mph (64.37 km/h) | 40.71 mph (65.52 km/h) |
| 45 mph (72.42 km/h) | 45.8 mph (73.71 km/h) |
| 50 mph (80.47 km/h) | 50.89 mph (81.9 km/h) |
| 55 mph (88.51 km/h) | 55.98 mph (90.08 km/h) |
| 60 mph (96.56 km/h) | 61.06 mph (98.27 km/h) |
| 65 mph (104.61 km/h) | 66.15 mph (106.46 km/h) |
| 70 mph (112.65 km/h) | 71.24 mph (114.65 km/h) |
| 75 mph (120.7 km/h) | 76.33 mph (122.84 km/h) |
| 80 mph (128.75 km/h) | 81.42 mph (131.03 km/h) |
| 85 mph (136.79 km/h) | 86.51 mph (139.22 km/h) |
| 90 mph (144.84 km/h) | 91.6 mph (147.41 km/h) |
| 95 mph (152.89 km/h) | 96.69 mph (155.6 km/h) |
| 100 mph (160.93 km/h) | 101.77 mph (163.79 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1711 | 1988 | 2141 | 2236 | 2338 | 2410 | 2490 | 2585 | 2716 | 2847 | 2993 | 3109 | 3321 | 3554 | 3736 | 3852 | 3918 | 4158 | 4493 | 5221 |
Better Fuel Economy Factory Ratios Increased Power
