Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 315/30-30 | 265/70-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 37.44 (951) | 34.61 (879) | -2.83 (-72) -7.6% |
| Width inches (mm) | 12.4 (315) | 10.43 (265) | -1.97 (-50) -15.9% |
| Circum. inches (mm) | 117.62 (2987.65) | 108.72 (2761.46) | -8.91 (-226.19) -7.6% |
| Sidewall Height inches (mm) | 3.72 (94.5) | 7.3 (185.5) | 3.58 (91) 96.3% |
| Revolutions per mile (km) | 538.66 (334.71) | 582.79 (362.13) | 44.12 (27.42) 8.2% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.49 mph (29.75 km/h) |
| 25 mph (40.23 km/h) | 23.11 mph (37.19 km/h) |
| 30 mph (48.28 km/h) | 27.73 mph (44.63 km/h) |
| 35 mph (56.33 km/h) | 32.35 mph (52.06 km/h) |
| 40 mph (64.37 km/h) | 36.97 mph (59.5 km/h) |
| 45 mph (72.42 km/h) | 41.59 mph (66.94 km/h) |
| 50 mph (80.47 km/h) | 46.21 mph (74.38 km/h) |
| 55 mph (88.51 km/h) | 50.84 mph (81.81 km/h) |
| 60 mph (96.56 km/h) | 55.46 mph (89.25 km/h) |
| 65 mph (104.61 km/h) | 60.08 mph (96.69 km/h) |
| 70 mph (112.65 km/h) | 64.7 mph (104.13 km/h) |
| 75 mph (120.7 km/h) | 69.32 mph (111.56 km/h) |
| 80 mph (128.75 km/h) | 73.94 mph (119 km/h) |
| 85 mph (136.79 km/h) | 78.56 mph (126.44 km/h) |
| 90 mph (144.84 km/h) | 83.19 mph (133.88 km/h) |
| 95 mph (152.89 km/h) | 87.81 mph (141.31 km/h) |
| 100 mph (160.93 km/h) | 92.43 mph (148.75 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1483 | 1723 | 1855 | 1937 | 2026 | 2089 | 2158 | 2240 | 2354 | 2468 | 2594 | 2695 | 2878 | 3080 | 3238 | 3339 | 3395 | 3604 | 3894 | 4525 |
Better Fuel Economy Factory Ratios Increased Power
