Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 315/30-30 | 375/40-24 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 37.44 (951) | 35.81 (909.6) | -1.63 (-41.4) -4.4% |
| Width inches (mm) | 12.4 (315) | 14.76 (375) | 2.36 (60) 19% |
| Circum. inches (mm) | 117.62 (2987.65) | 112.5 (2857.59) | -5.12 (-130.06) -4.4% |
| Sidewall Height inches (mm) | 3.72 (94.5) | 5.91 (150) | 2.19 (55.5) 58.7% |
| Revolutions per mile (km) | 538.66 (334.71) | 563.18 (349.94) | 24.52 (15.23) 4.6% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.13 mph (30.79 km/h) |
| 25 mph (40.23 km/h) | 23.91 mph (38.48 km/h) |
| 30 mph (48.28 km/h) | 28.69 mph (46.18 km/h) |
| 35 mph (56.33 km/h) | 33.48 mph (53.88 km/h) |
| 40 mph (64.37 km/h) | 38.26 mph (61.57 km/h) |
| 45 mph (72.42 km/h) | 43.04 mph (69.27 km/h) |
| 50 mph (80.47 km/h) | 47.82 mph (76.96 km/h) |
| 55 mph (88.51 km/h) | 52.61 mph (84.66 km/h) |
| 60 mph (96.56 km/h) | 57.39 mph (92.36 km/h) |
| 65 mph (104.61 km/h) | 62.17 mph (100.05 km/h) |
| 70 mph (112.65 km/h) | 66.95 mph (107.75 km/h) |
| 75 mph (120.7 km/h) | 71.74 mph (115.45 km/h) |
| 80 mph (128.75 km/h) | 76.52 mph (123.14 km/h) |
| 85 mph (136.79 km/h) | 81.3 mph (130.84 km/h) |
| 90 mph (144.84 km/h) | 86.08 mph (138.54 km/h) |
| 95 mph (152.89 km/h) | 90.86 mph (146.23 km/h) |
| 100 mph (160.93 km/h) | 95.65 mph (153.93 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1433 | 1665 | 1793 | 1872 | 1958 | 2019 | 2086 | 2165 | 2275 | 2385 | 2507 | 2604 | 2781 | 2976 | 3129 | 3226 | 3281 | 3482 | 3763 | 4373 |
Better Fuel Economy Factory Ratios Increased Power
