Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 28/9-15 | 235/78-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.98 (710.76) | 29.43 (747.6) | 1.45 (36.84) 5.2% |
| Width inches (mm) | 9.02 (229) | 9.25 (235) | 0.24 (6) 2.6% |
| Circum. inches (mm) | 87.91 (2232.92) | 92.47 (2348.65) | 4.56 (115.74) 5.2% |
| Sidewall Height inches (mm) | 6.49 (164.88) | 7.22 (183.3) | 0.73 (18.42) 11.2% |
| Revolutions per mile (km) | 720.74 (447.84) | 685.22 (425.77) | -35.52 (-22.07) -4.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.04 mph (33.86 km/h) |
| 25 mph (40.23 km/h) | 26.3 mph (42.32 km/h) |
| 30 mph (48.28 km/h) | 31.55 mph (50.78 km/h) |
| 35 mph (56.33 km/h) | 36.81 mph (59.25 km/h) |
| 40 mph (64.37 km/h) | 42.07 mph (67.71 km/h) |
| 45 mph (72.42 km/h) | 47.33 mph (76.17 km/h) |
| 50 mph (80.47 km/h) | 52.59 mph (84.64 km/h) |
| 55 mph (88.51 km/h) | 57.85 mph (93.1 km/h) |
| 60 mph (96.56 km/h) | 63.11 mph (101.57 km/h) |
| 65 mph (104.61 km/h) | 68.37 mph (110.03 km/h) |
| 70 mph (112.65 km/h) | 73.63 mph (118.49 km/h) |
| 75 mph (120.7 km/h) | 78.89 mph (126.96 km/h) |
| 80 mph (128.75 km/h) | 84.15 mph (135.42 km/h) |
| 85 mph (136.79 km/h) | 89.41 mph (143.88 km/h) |
| 90 mph (144.84 km/h) | 94.66 mph (152.35 km/h) |
| 95 mph (152.89 km/h) | 99.92 mph (160.81 km/h) |
| 100 mph (160.93 km/h) | 105.18 mph (169.28 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1744 | 2026 | 2182 | 2278 | 2382 | 2456 | 2538 | 2634 | 2768 | 2901 | 3050 | 3168 | 3384 | 3621 | 3807 | 3925 | 3992 | 4237 | 4578 | 5320 |
Better Fuel Economy Factory Ratios Increased Power
