Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 27/8.5-15 | 225/65-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.08 (687.72) | 26.52 (673.5) | -0.56 (-14.22) -2.1% |
| Width inches (mm) | 8.5 (216) | 8.86 (225) | 0.35 (9) 4.2% |
| Circum. inches (mm) | 85.06 (2160.54) | 83.3 (2115.86) | -1.76 (-44.67) -2.1% |
| Sidewall Height inches (mm) | 6.04 (153.36) | 5.76 (146.25) | -0.28 (-7.11) -4.6% |
| Revolutions per mile (km) | 744.88 (462.85) | 760.61 (472.62) | 15.73 (9.77) 2.1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.59 mph (31.52 km/h) |
| 25 mph (40.23 km/h) | 24.48 mph (39.4 km/h) |
| 30 mph (48.28 km/h) | 29.38 mph (47.28 km/h) |
| 35 mph (56.33 km/h) | 34.28 mph (55.16 km/h) |
| 40 mph (64.37 km/h) | 39.17 mph (63.04 km/h) |
| 45 mph (72.42 km/h) | 44.07 mph (70.92 km/h) |
| 50 mph (80.47 km/h) | 48.97 mph (78.8 km/h) |
| 55 mph (88.51 km/h) | 53.86 mph (86.68 km/h) |
| 60 mph (96.56 km/h) | 58.76 mph (94.56 km/h) |
| 65 mph (104.61 km/h) | 63.66 mph (102.44 km/h) |
| 70 mph (112.65 km/h) | 68.55 mph (110.32 km/h) |
| 75 mph (120.7 km/h) | 73.45 mph (118.21 km/h) |
| 80 mph (128.75 km/h) | 78.35 mph (126.09 km/h) |
| 85 mph (136.79 km/h) | 83.24 mph (133.97 km/h) |
| 90 mph (144.84 km/h) | 88.14 mph (141.85 km/h) |
| 95 mph (152.89 km/h) | 93.04 mph (149.73 km/h) |
| 100 mph (160.93 km/h) | 97.93 mph (157.61 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1936 | 2249 | 2422 | 2529 | 2644 | 2726 | 2817 | 2924 | 3072 | 3221 | 3385 | 3517 | 3756 | 4019 | 4225 | 4357 | 4431 | 4703 | 5082 | 5906 |
Better Fuel Economy Factory Ratios Increased Power
