Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 285/40-15 | 265/55-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 23.98 (609) | 26.48 (672.5) | 2.5 (63.5) 10.4% |
| Width inches (mm) | 11.22 (285) | 10.43 (265) | -0.79 (-20) -7% |
| Circum. inches (mm) | 75.32 (1913.23) | 83.18 (2112.72) | 7.85 (199.49) 10.4% |
| Sidewall Height inches (mm) | 4.49 (114) | 5.74 (145.75) | 1.25 (31.75) 27.9% |
| Revolutions per mile (km) | 841.17 (522.68) | 761.74 (473.32) | -79.43 (-49.35) -9.4% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.09 mph (35.54 km/h) |
| 25 mph (40.23 km/h) | 27.61 mph (44.43 km/h) |
| 30 mph (48.28 km/h) | 33.13 mph (53.31 km/h) |
| 35 mph (56.33 km/h) | 38.65 mph (62.2 km/h) |
| 40 mph (64.37 km/h) | 44.17 mph (71.09 km/h) |
| 45 mph (72.42 km/h) | 49.69 mph (79.97 km/h) |
| 50 mph (80.47 km/h) | 55.21 mph (88.86 km/h) |
| 55 mph (88.51 km/h) | 60.73 mph (97.74 km/h) |
| 60 mph (96.56 km/h) | 66.26 mph (106.63 km/h) |
| 65 mph (104.61 km/h) | 71.78 mph (115.51 km/h) |
| 70 mph (112.65 km/h) | 77.3 mph (124.4 km/h) |
| 75 mph (120.7 km/h) | 82.82 mph (133.29 km/h) |
| 80 mph (128.75 km/h) | 88.34 mph (142.17 km/h) |
| 85 mph (136.79 km/h) | 93.86 mph (151.06 km/h) |
| 90 mph (144.84 km/h) | 99.38 mph (159.94 km/h) |
| 95 mph (152.89 km/h) | 104.91 mph (168.83 km/h) |
| 100 mph (160.93 km/h) | 110.43 mph (177.72 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1938 | 2252 | 2425 | 2532 | 2648 | 2730 | 2821 | 2928 | 3077 | 3225 | 3390 | 3522 | 3761 | 4025 | 4232 | 4364 | 4438 | 4710 | 5090 | 5914 |
Better Fuel Economy Factory Ratios Increased Power
