Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 27/8.5-15 | 225/70-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.08 (687.72) | 27.4 (696) | 0.33 (8.28) 1.2% |
| Width inches (mm) | 8.5 (216) | 8.86 (225) | 0.35 (9) 4.2% |
| Circum. inches (mm) | 85.06 (2160.54) | 86.08 (2186.55) | 1.02 (26.01) 1.2% |
| Sidewall Height inches (mm) | 6.04 (153.36) | 6.2 (157.5) | 0.16 (4.14) 2.7% |
| Revolutions per mile (km) | 744.88 (462.85) | 736.02 (457.34) | -8.86 (-5.51) -1.2% |
225/70-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.24 mph (32.57 km/h) |
| 25 mph (40.23 km/h) | 25.3 mph (40.72 km/h) |
| 30 mph (48.28 km/h) | 30.36 mph (48.86 km/h) |
| 35 mph (56.33 km/h) | 35.42 mph (57.01 km/h) |
| 40 mph (64.37 km/h) | 40.48 mph (65.15 km/h) |
| 45 mph (72.42 km/h) | 45.54 mph (73.29 km/h) |
| 50 mph (80.47 km/h) | 50.6 mph (81.44 km/h) |
| 55 mph (88.51 km/h) | 55.66 mph (89.58 km/h) |
| 60 mph (96.56 km/h) | 60.72 mph (97.72 km/h) |
| 65 mph (104.61 km/h) | 65.78 mph (105.87 km/h) |
| 70 mph (112.65 km/h) | 70.84 mph (114.01 km/h) |
| 75 mph (120.7 km/h) | 75.9 mph (122.15 km/h) |
| 80 mph (128.75 km/h) | 80.96 mph (130.3 km/h) |
| 85 mph (136.79 km/h) | 86.02 mph (138.44 km/h) |
| 90 mph (144.84 km/h) | 91.08 mph (146.59 km/h) |
| 95 mph (152.89 km/h) | 96.14 mph (154.73 km/h) |
| 100 mph (160.93 km/h) | 101.2 mph (162.87 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1873 | 2176 | 2343 | 2447 | 2558 | 2638 | 2726 | 2829 | 2973 | 3116 | 3276 | 3403 | 3634 | 3890 | 4089 | 4216 | 4288 | 4551 | 4918 | 5715 |
Better Fuel Economy Factory Ratios Increased Power
