Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 165/82-15 | 225/78-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.65 (651.6) | 28.82 (732) | 3.17 (80.4) 12.3% |
| Width inches (mm) | 6.5 (165) | 8.86 (225) | 2.36 (60) 36.4% |
| Circum. inches (mm) | 80.59 (2047.06) | 90.54 (2299.65) | 9.94 (252.58) 12.3% |
| Sidewall Height inches (mm) | 5.33 (135.3) | 6.91 (175.5) | 1.58 (40.2) 29.7% |
| Revolutions per mile (km) | 786.17 (488.5) | 699.82 (434.85) | -86.35 (-53.66) -11% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.47 mph (36.16 km/h) |
| 25 mph (40.23 km/h) | 28.08 mph (45.2 km/h) |
| 30 mph (48.28 km/h) | 33.7 mph (54.24 km/h) |
| 35 mph (56.33 km/h) | 39.32 mph (63.28 km/h) |
| 40 mph (64.37 km/h) | 44.94 mph (72.32 km/h) |
| 45 mph (72.42 km/h) | 50.55 mph (81.36 km/h) |
| 50 mph (80.47 km/h) | 56.17 mph (90.4 km/h) |
| 55 mph (88.51 km/h) | 61.79 mph (99.44 km/h) |
| 60 mph (96.56 km/h) | 67.4 mph (108.48 km/h) |
| 65 mph (104.61 km/h) | 73.02 mph (117.51 km/h) |
| 70 mph (112.65 km/h) | 78.64 mph (126.55 km/h) |
| 75 mph (120.7 km/h) | 84.25 mph (135.59 km/h) |
| 80 mph (128.75 km/h) | 89.87 mph (144.63 km/h) |
| 85 mph (136.79 km/h) | 95.49 mph (153.67 km/h) |
| 90 mph (144.84 km/h) | 101.1 mph (162.71 km/h) |
| 95 mph (152.89 km/h) | 106.72 mph (171.75 km/h) |
| 100 mph (160.93 km/h) | 112.34 mph (180.79 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1781 | 2069 | 2228 | 2327 | 2433 | 2508 | 2592 | 2690 | 2827 | 2963 | 3115 | 3236 | 3456 | 3698 | 3888 | 4009 | 4077 | 4327 | 4676 | 5434 |
Better Fuel Economy Factory Ratios Increased Power
