Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 315/30-30 | 325/35-30 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 37.44 (951) | 38.96 (989.5) | 1.52 (38.5) 4% |
| Width inches (mm) | 12.4 (315) | 12.8 (325) | 0.39 (10) 3.2% |
| Circum. inches (mm) | 117.62 (2987.65) | 122.39 (3108.61) | 4.76 (120.95) 4% |
| Sidewall Height inches (mm) | 3.72 (94.5) | 4.48 (113.75) | 0.76 (19.25) 20.4% |
| Revolutions per mile (km) | 538.66 (334.71) | 517.71 (321.69) | -20.96 (-13.02) -3.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.81 mph (33.49 km/h) |
| 25 mph (40.23 km/h) | 26.01 mph (41.86 km/h) |
| 30 mph (48.28 km/h) | 31.21 mph (50.23 km/h) |
| 35 mph (56.33 km/h) | 36.42 mph (58.61 km/h) |
| 40 mph (64.37 km/h) | 41.62 mph (66.98 km/h) |
| 45 mph (72.42 km/h) | 46.82 mph (75.35 km/h) |
| 50 mph (80.47 km/h) | 52.02 mph (83.72 km/h) |
| 55 mph (88.51 km/h) | 57.23 mph (92.1 km/h) |
| 60 mph (96.56 km/h) | 62.43 mph (100.47 km/h) |
| 65 mph (104.61 km/h) | 67.63 mph (108.84 km/h) |
| 70 mph (112.65 km/h) | 72.83 mph (117.21 km/h) |
| 75 mph (120.7 km/h) | 78.04 mph (125.59 km/h) |
| 80 mph (128.75 km/h) | 83.24 mph (133.96 km/h) |
| 85 mph (136.79 km/h) | 88.44 mph (142.33 km/h) |
| 90 mph (144.84 km/h) | 93.64 mph (150.7 km/h) |
| 95 mph (152.89 km/h) | 98.85 mph (159.08 km/h) |
| 100 mph (160.93 km/h) | 104.05 mph (167.45 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1317 | 1530 | 1648 | 1721 | 1800 | 1856 | 1917 | 1990 | 2091 | 2192 | 2304 | 2394 | 2556 | 2736 | 2876 | 2966 | 3016 | 3201 | 3459 | 4020 |
Better Fuel Economy Factory Ratios Increased Power
