Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 265/60-20 | 285/65-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 32.52 (826) | 34.59 (878.5) | 2.07 (52.5) 6.4% |
| Width inches (mm) | 10.43 (265) | 11.22 (285) | 0.79 (20) 7.5% |
| Circum. inches (mm) | 102.16 (2594.96) | 108.66 (2759.89) | 6.49 (164.93) 6.4% |
| Sidewall Height inches (mm) | 6.26 (159) | 7.29 (185.25) | 1.03 (26.25) 16.5% |
| Revolutions per mile (km) | 620.18 (385.36) | 583.12 (362.33) | -37.06 (-23.03) -6% |
285/65-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.27 mph (34.23 km/h) |
| 25 mph (40.23 km/h) | 26.59 mph (42.79 km/h) |
| 30 mph (48.28 km/h) | 31.91 mph (51.35 km/h) |
| 35 mph (56.33 km/h) | 37.22 mph (59.91 km/h) |
| 40 mph (64.37 km/h) | 42.54 mph (68.47 km/h) |
| 45 mph (72.42 km/h) | 47.86 mph (77.02 km/h) |
| 50 mph (80.47 km/h) | 53.18 mph (85.58 km/h) |
| 55 mph (88.51 km/h) | 58.5 mph (94.14 km/h) |
| 60 mph (96.56 km/h) | 63.81 mph (102.7 km/h) |
| 65 mph (104.61 km/h) | 69.13 mph (111.26 km/h) |
| 70 mph (112.65 km/h) | 74.45 mph (119.81 km/h) |
| 75 mph (120.7 km/h) | 79.77 mph (128.37 km/h) |
| 80 mph (128.75 km/h) | 85.08 mph (136.93 km/h) |
| 85 mph (136.79 km/h) | 90.4 mph (145.49 km/h) |
| 90 mph (144.84 km/h) | 95.72 mph (154.05 km/h) |
| 95 mph (152.89 km/h) | 101.04 mph (162.61 km/h) |
| 100 mph (160.93 km/h) | 106.36 mph (171.16 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1484 | 1724 | 1856 | 1939 | 2027 | 2090 | 2160 | 2242 | 2355 | 2469 | 2595 | 2696 | 2879 | 3082 | 3239 | 3340 | 3397 | 3606 | 3896 | 4528 |
Better Fuel Economy Factory Ratios Increased Power
