Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 145/60-15 | 33/18.5-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.85 (555) | 33.13 (841.6) | 11.28 (286.6) 51.6% |
| Width inches (mm) | 5.71 (145) | 18.5 (470) | 12.8 (325) 224.1% |
| Circum. inches (mm) | 68.65 (1743.58) | 104.09 (2643.96) | 35.45 (900.38) 51.6% |
| Sidewall Height inches (mm) | 3.43 (87) | 9.07 (230.3) | 5.64 (143.3) 164.7% |
| Revolutions per mile (km) | 923.01 (573.53) | 608.69 (378.22) | -314.32 (-195.31) -34.1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 30.33 mph (48.81 km/h) |
| 25 mph (40.23 km/h) | 37.91 mph (61.01 km/h) |
| 30 mph (48.28 km/h) | 45.49 mph (73.21 km/h) |
| 35 mph (56.33 km/h) | 53.07 mph (85.41 km/h) |
| 40 mph (64.37 km/h) | 60.66 mph (97.62 km/h) |
| 45 mph (72.42 km/h) | 68.24 mph (109.82 km/h) |
| 50 mph (80.47 km/h) | 75.82 mph (122.02 km/h) |
| 55 mph (88.51 km/h) | 83.4 mph (134.22 km/h) |
| 60 mph (96.56 km/h) | 90.98 mph (146.42 km/h) |
| 65 mph (104.61 km/h) | 98.57 mph (158.63 km/h) |
| 70 mph (112.65 km/h) | 106.15 mph (170.83 km/h) |
| 75 mph (120.7 km/h) | 113.73 mph (183.03 km/h) |
| 80 mph (128.75 km/h) | 121.31 mph (195.23 km/h) |
| 85 mph (136.79 km/h) | 128.89 mph (207.43 km/h) |
| 90 mph (144.84 km/h) | 136.48 mph (219.64 km/h) |
| 95 mph (152.89 km/h) | 144.06 mph (231.84 km/h) |
| 100 mph (160.93 km/h) | 151.64 mph (244.04 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1549 | 1799 | 1938 | 2024 | 2116 | 2182 | 2254 | 2340 | 2459 | 2577 | 2709 | 2815 | 3006 | 3217 | 3381 | 3487 | 3546 | 3764 | 4067 | 4726 |
Better Fuel Economy Factory Ratios Increased Power
