Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 155/55-15 | 24.5/8.5-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.71 (551.5) | 24.52 (622.92) | 2.81 (71.42) 13% |
| Width inches (mm) | 6.1 (155) | 8.5 (216) | 2.4 (61) 39.4% |
| Circum. inches (mm) | 68.21 (1732.59) | 77.05 (1956.96) | 8.83 (224.37) 13% |
| Sidewall Height inches (mm) | 3.36 (85.25) | 4.76 (120.96) | 1.41 (35.71) 41.9% |
| Revolutions per mile (km) | 928.87 (577.17) | 822.37 (511) | -106.5 (-66.17) -11.5% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.59 mph (36.36 km/h) |
| 25 mph (40.23 km/h) | 28.24 mph (45.44 km/h) |
| 30 mph (48.28 km/h) | 33.89 mph (54.53 km/h) |
| 35 mph (56.33 km/h) | 39.53 mph (63.62 km/h) |
| 40 mph (64.37 km/h) | 45.18 mph (72.71 km/h) |
| 45 mph (72.42 km/h) | 50.83 mph (81.8 km/h) |
| 50 mph (80.47 km/h) | 56.48 mph (90.89 km/h) |
| 55 mph (88.51 km/h) | 62.12 mph (99.98 km/h) |
| 60 mph (96.56 km/h) | 67.77 mph (109.07 km/h) |
| 65 mph (104.61 km/h) | 73.42 mph (118.15 km/h) |
| 70 mph (112.65 km/h) | 79.07 mph (127.24 km/h) |
| 75 mph (120.7 km/h) | 84.71 mph (136.33 km/h) |
| 80 mph (128.75 km/h) | 90.36 mph (145.42 km/h) |
| 85 mph (136.79 km/h) | 96.01 mph (154.51 km/h) |
| 90 mph (144.84 km/h) | 101.66 mph (163.6 km/h) |
| 95 mph (152.89 km/h) | 107.3 mph (172.69 km/h) |
| 100 mph (160.93 km/h) | 112.95 mph (181.78 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2093 | 2431 | 2618 | 2734 | 2859 | 2948 | 3046 | 3161 | 3322 | 3482 | 3660 | 3803 | 4061 | 4346 | 4568 | 4711 | 4791 | 5085 | 5495 | 6385 |
Better Fuel Economy Factory Ratios Increased Power
