Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 315/30-30 | 256/35-30 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 37.44 (951) | 37.06 (941.2) | -0.39 (-9.8) -1% |
| Width inches (mm) | 12.4 (315) | 10.08 (256) | -2.32 (-59) -18.7% |
| Circum. inches (mm) | 117.62 (2987.65) | 116.41 (2956.87) | -1.21 (-30.79) -1% |
| Sidewall Height inches (mm) | 3.72 (94.5) | 3.53 (89.6) | -0.19 (-4.9) -5.2% |
| Revolutions per mile (km) | 538.66 (334.71) | 544.27 (338.2) | 5.61 (3.49) 1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.79 mph (31.86 km/h) |
| 25 mph (40.23 km/h) | 24.74 mph (39.82 km/h) |
| 30 mph (48.28 km/h) | 29.69 mph (47.78 km/h) |
| 35 mph (56.33 km/h) | 34.64 mph (55.75 km/h) |
| 40 mph (64.37 km/h) | 39.59 mph (63.71 km/h) |
| 45 mph (72.42 km/h) | 44.54 mph (71.67 km/h) |
| 50 mph (80.47 km/h) | 49.48 mph (79.64 km/h) |
| 55 mph (88.51 km/h) | 54.43 mph (87.6 km/h) |
| 60 mph (96.56 km/h) | 59.38 mph (95.57 km/h) |
| 65 mph (104.61 km/h) | 64.33 mph (103.53 km/h) |
| 70 mph (112.65 km/h) | 69.28 mph (111.49 km/h) |
| 75 mph (120.7 km/h) | 74.23 mph (119.46 km/h) |
| 80 mph (128.75 km/h) | 79.18 mph (127.42 km/h) |
| 85 mph (136.79 km/h) | 84.12 mph (135.38 km/h) |
| 90 mph (144.84 km/h) | 89.07 mph (143.35 km/h) |
| 95 mph (152.89 km/h) | 94.02 mph (151.31 km/h) |
| 100 mph (160.93 km/h) | 98.97 mph (159.28 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1385 | 1609 | 1733 | 1809 | 1892 | 1951 | 2016 | 2092 | 2198 | 2305 | 2422 | 2517 | 2688 | 2876 | 3024 | 3118 | 3171 | 3365 | 3637 | 4226 |
Better Fuel Economy Factory Ratios Increased Power
