Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 165/82-15 | 245/85-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.65 (651.6) | 31.4 (797.5) | 5.74 (145.9) 22.4% |
| Width inches (mm) | 6.5 (165) | 9.65 (245) | 3.15 (80) 48.5% |
| Circum. inches (mm) | 80.59 (2047.06) | 98.64 (2505.42) | 18.05 (458.36) 22.4% |
| Sidewall Height inches (mm) | 5.33 (135.3) | 8.2 (208.25) | 2.87 (72.95) 53.9% |
| Revolutions per mile (km) | 786.17 (488.5) | 642.34 (399.13) | -143.83 (-89.37) -18.3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 24.48 mph (39.39 km/h) |
| 25 mph (40.23 km/h) | 30.6 mph (49.24 km/h) |
| 30 mph (48.28 km/h) | 36.72 mph (59.09 km/h) |
| 35 mph (56.33 km/h) | 42.84 mph (68.94 km/h) |
| 40 mph (64.37 km/h) | 48.96 mph (78.79 km/h) |
| 45 mph (72.42 km/h) | 55.08 mph (88.64 km/h) |
| 50 mph (80.47 km/h) | 61.2 mph (98.48 km/h) |
| 55 mph (88.51 km/h) | 67.32 mph (108.33 km/h) |
| 60 mph (96.56 km/h) | 73.43 mph (118.18 km/h) |
| 65 mph (104.61 km/h) | 79.55 mph (128.03 km/h) |
| 70 mph (112.65 km/h) | 85.67 mph (137.88 km/h) |
| 75 mph (120.7 km/h) | 91.79 mph (147.73 km/h) |
| 80 mph (128.75 km/h) | 97.91 mph (157.58 km/h) |
| 85 mph (136.79 km/h) | 104.03 mph (167.42 km/h) |
| 90 mph (144.84 km/h) | 110.15 mph (177.27 km/h) |
| 95 mph (152.89 km/h) | 116.27 mph (187.12 km/h) |
| 100 mph (160.93 km/h) | 122.39 mph (196.97 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1635 | 1899 | 2045 | 2135 | 2233 | 2302 | 2379 | 2469 | 2595 | 2720 | 2859 | 2970 | 3172 | 3394 | 3568 | 3680 | 3742 | 3972 | 4292 | 4987 |
Better Fuel Economy Factory Ratios Increased Power
