Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 225/80-15 | 33/12-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 29.17 (741) | 33.01 (838.5) | 3.84 (97.5) 13.2% |
| Width inches (mm) | 8.86 (225) | 12.01 (305) | 3.15 (80) 35.6% |
| Circum. inches (mm) | 91.65 (2327.92) | 103.71 (2634.23) | 12.06 (306.31) 13.2% |
| Sidewall Height inches (mm) | 7.09 (180) | 9.01 (228.75) | 1.92 (48.75) 27.1% |
| Revolutions per mile (km) | 691.32 (429.57) | 610.94 (379.62) | -80.39 (-49.95) -11.6% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.63 mph (36.42 km/h) |
| 25 mph (40.23 km/h) | 28.29 mph (45.53 km/h) |
| 30 mph (48.28 km/h) | 33.95 mph (54.63 km/h) |
| 35 mph (56.33 km/h) | 39.61 mph (63.74 km/h) |
| 40 mph (64.37 km/h) | 45.26 mph (72.84 km/h) |
| 45 mph (72.42 km/h) | 50.92 mph (81.95 km/h) |
| 50 mph (80.47 km/h) | 56.58 mph (91.06 km/h) |
| 55 mph (88.51 km/h) | 62.24 mph (100.16 km/h) |
| 60 mph (96.56 km/h) | 67.89 mph (109.27 km/h) |
| 65 mph (104.61 km/h) | 73.55 mph (118.37 km/h) |
| 70 mph (112.65 km/h) | 79.21 mph (127.48 km/h) |
| 75 mph (120.7 km/h) | 84.87 mph (136.58 km/h) |
| 80 mph (128.75 km/h) | 90.53 mph (145.69 km/h) |
| 85 mph (136.79 km/h) | 96.18 mph (154.79 km/h) |
| 90 mph (144.84 km/h) | 101.84 mph (163.9 km/h) |
| 95 mph (152.89 km/h) | 107.5 mph (173 km/h) |
| 100 mph (160.93 km/h) | 113.16 mph (182.11 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1555 | 1806 | 1945 | 2031 | 2124 | 2190 | 2263 | 2349 | 2468 | 2587 | 2719 | 2825 | 3017 | 3229 | 3394 | 3500 | 3559 | 3778 | 4082 | 4744 |
Better Fuel Economy Factory Ratios Increased Power
