Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 35/12.5-15 | 38/12.5-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 35.03 (889.8) | 38.04 (966.12) | 3 (76.32) 8.6% |
| Width inches (mm) | 12.52 (318) | 12.52 (318) | 0 (0) 0% |
| Circum. inches (mm) | 110.05 (2795.39) | 119.49 (3035.16) | 9.44 (239.77) 8.6% |
| Sidewall Height inches (mm) | 10.02 (254.4) | 11.52 (292.56) | 1.5 (38.16) 15% |
| Revolutions per mile (km) | 575.71 (357.73) | 530.23 (329.47) | -45.48 (-28.26) -7.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.72 mph (34.95 km/h) |
| 25 mph (40.23 km/h) | 27.14 mph (43.68 km/h) |
| 30 mph (48.28 km/h) | 32.57 mph (52.42 km/h) |
| 35 mph (56.33 km/h) | 38 mph (61.16 km/h) |
| 40 mph (64.37 km/h) | 43.43 mph (69.9 km/h) |
| 45 mph (72.42 km/h) | 48.86 mph (78.63 km/h) |
| 50 mph (80.47 km/h) | 54.29 mph (87.37 km/h) |
| 55 mph (88.51 km/h) | 59.72 mph (96.11 km/h) |
| 60 mph (96.56 km/h) | 65.15 mph (104.84 km/h) |
| 65 mph (104.61 km/h) | 70.58 mph (113.58 km/h) |
| 70 mph (112.65 km/h) | 76 mph (122.32 km/h) |
| 75 mph (120.7 km/h) | 81.43 mph (131.05 km/h) |
| 80 mph (128.75 km/h) | 86.86 mph (139.79 km/h) |
| 85 mph (136.79 km/h) | 92.29 mph (148.53 km/h) |
| 90 mph (144.84 km/h) | 97.72 mph (157.26 km/h) |
| 95 mph (152.89 km/h) | 103.15 mph (166 km/h) |
| 100 mph (160.93 km/h) | 108.58 mph (174.74 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1349 | 1568 | 1688 | 1763 | 1843 | 1901 | 1964 | 2038 | 2142 | 2245 | 2360 | 2452 | 2618 | 2802 | 2946 | 3037 | 3089 | 3279 | 3543 | 4117 |
Better Fuel Economy Factory Ratios Increased Power
