Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 33/11.5-15 | 305/85-16 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 32.93 (836.52) | 36.41 (924.9) | 3.48 (88.38) 10.6% |
| Width inches (mm) | 11.5 (292) | 12.01 (305) | 0.51 (13) 4.5% |
| Circum. inches (mm) | 103.46 (2628.01) | 114.4 (2905.66) | 10.93 (277.65) 10.6% |
| Sidewall Height inches (mm) | 8.97 (227.76) | 10.21 (259.25) | 1.24 (31.49) 13.8% |
| Revolutions per mile (km) | 612.38 (380.52) | 553.87 (344.16) | -58.52 (-36.36) -9.6% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.11 mph (35.59 km/h) |
| 25 mph (40.23 km/h) | 27.64 mph (44.48 km/h) |
| 30 mph (48.28 km/h) | 33.17 mph (53.38 km/h) |
| 35 mph (56.33 km/h) | 38.7 mph (62.28 km/h) |
| 40 mph (64.37 km/h) | 44.23 mph (71.18 km/h) |
| 45 mph (72.42 km/h) | 49.75 mph (80.07 km/h) |
| 50 mph (80.47 km/h) | 55.28 mph (88.97 km/h) |
| 55 mph (88.51 km/h) | 60.81 mph (97.87 km/h) |
| 60 mph (96.56 km/h) | 66.34 mph (106.76 km/h) |
| 65 mph (104.61 km/h) | 71.87 mph (115.66 km/h) |
| 70 mph (112.65 km/h) | 77.4 mph (124.56 km/h) |
| 75 mph (120.7 km/h) | 82.92 mph (133.45 km/h) |
| 80 mph (128.75 km/h) | 88.45 mph (142.35 km/h) |
| 85 mph (136.79 km/h) | 93.98 mph (151.25 km/h) |
| 90 mph (144.84 km/h) | 99.51 mph (160.14 km/h) |
| 95 mph (152.89 km/h) | 105.04 mph (169.04 km/h) |
| 100 mph (160.93 km/h) | 110.57 mph (177.94 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1409 | 1637 | 1763 | 1841 | 1925 | 1985 | 2051 | 2129 | 2237 | 2345 | 2465 | 2561 | 2735 | 2927 | 3077 | 3173 | 3227 | 3425 | 3701 | 4300 |
Better Fuel Economy Factory Ratios Increased Power
