Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 315/30-30 | 315/40-24 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 37.44 (951) | 33.92 (861.6) | -3.52 (-89.4) -9.4% |
| Width inches (mm) | 12.4 (315) | 12.4 (315) | 0 (0) 0% |
| Circum. inches (mm) | 117.62 (2987.65) | 106.57 (2706.8) | -11.06 (-280.86) -9.4% |
| Sidewall Height inches (mm) | 3.72 (94.5) | 4.96 (126) | 1.24 (31.5) 33.3% |
| Revolutions per mile (km) | 538.66 (334.71) | 594.56 (369.44) | 55.89 (34.73) 10.4% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.12 mph (29.16 km/h) |
| 25 mph (40.23 km/h) | 22.65 mph (36.45 km/h) |
| 30 mph (48.28 km/h) | 27.18 mph (43.74 km/h) |
| 35 mph (56.33 km/h) | 31.71 mph (51.03 km/h) |
| 40 mph (64.37 km/h) | 36.24 mph (58.32 km/h) |
| 45 mph (72.42 km/h) | 40.77 mph (65.61 km/h) |
| 50 mph (80.47 km/h) | 45.3 mph (72.9 km/h) |
| 55 mph (88.51 km/h) | 49.83 mph (80.19 km/h) |
| 60 mph (96.56 km/h) | 54.36 mph (87.48 km/h) |
| 65 mph (104.61 km/h) | 58.89 mph (94.77 km/h) |
| 70 mph (112.65 km/h) | 63.42 mph (102.06 km/h) |
| 75 mph (120.7 km/h) | 67.95 mph (109.35 km/h) |
| 80 mph (128.75 km/h) | 72.48 mph (116.64 km/h) |
| 85 mph (136.79 km/h) | 77.01 mph (123.93 km/h) |
| 90 mph (144.84 km/h) | 81.54 mph (131.23 km/h) |
| 95 mph (152.89 km/h) | 86.07 mph (138.52 km/h) |
| 100 mph (160.93 km/h) | 90.6 mph (145.81 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1513 | 1758 | 1893 | 1977 | 2067 | 2131 | 2202 | 2286 | 2402 | 2517 | 2646 | 2749 | 2936 | 3142 | 3303 | 3406 | 3464 | 3676 | 3973 | 4616 |
Better Fuel Economy Factory Ratios Increased Power
