Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 27/8.5-15 | 29/8.5-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.08 (687.72) | 28.95 (735.24) | 1.87 (47.52) 6.9% |
| Width inches (mm) | 8.5 (216) | 8.5 (216) | 0 (0) 0% |
| Circum. inches (mm) | 85.06 (2160.54) | 90.94 (2309.82) | 5.88 (149.29) 6.9% |
| Sidewall Height inches (mm) | 6.04 (153.36) | 6.97 (177.12) | 0.94 (23.76) 15.5% |
| Revolutions per mile (km) | 744.88 (462.85) | 696.74 (432.93) | -48.14 (-29.91) -6.5% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.38 mph (34.41 km/h) |
| 25 mph (40.23 km/h) | 26.73 mph (43.01 km/h) |
| 30 mph (48.28 km/h) | 32.07 mph (51.62 km/h) |
| 35 mph (56.33 km/h) | 37.42 mph (60.22 km/h) |
| 40 mph (64.37 km/h) | 42.76 mph (68.82 km/h) |
| 45 mph (72.42 km/h) | 48.11 mph (77.42 km/h) |
| 50 mph (80.47 km/h) | 53.45 mph (86.03 km/h) |
| 55 mph (88.51 km/h) | 58.8 mph (94.63 km/h) |
| 60 mph (96.56 km/h) | 64.15 mph (103.23 km/h) |
| 65 mph (104.61 km/h) | 69.49 mph (111.84 km/h) |
| 70 mph (112.65 km/h) | 74.84 mph (120.44 km/h) |
| 75 mph (120.7 km/h) | 80.18 mph (129.04 km/h) |
| 80 mph (128.75 km/h) | 85.53 mph (137.64 km/h) |
| 85 mph (136.79 km/h) | 90.87 mph (146.25 km/h) |
| 90 mph (144.84 km/h) | 96.22 mph (154.85 km/h) |
| 95 mph (152.89 km/h) | 101.56 mph (163.45 km/h) |
| 100 mph (160.93 km/h) | 106.91 mph (172.05 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1773 | 2060 | 2218 | 2316 | 2422 | 2497 | 2580 | 2678 | 2814 | 2950 | 3101 | 3222 | 3441 | 3682 | 3871 | 3991 | 4059 | 4308 | 4655 | 5410 |
Better Fuel Economy Factory Ratios Increased Power
