Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 315/80-16 | 37/12.5-16 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 35.84 (910.4) | 37.03 (940.64) | 1.19 (30.24) 3.3% |
| Width inches (mm) | 12.4 (315) | 12.52 (318) | 0.12 (3) 1% |
| Circum. inches (mm) | 112.6 (2860.11) | 116.34 (2955.11) | 3.74 (95) 3.3% |
| Sidewall Height inches (mm) | 9.92 (252) | 10.52 (267.12) | 0.6 (15.12) 6% |
| Revolutions per mile (km) | 562.69 (349.64) | 544.6 (338.4) | -18.09 (-11.24) -3.2% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.66 mph (33.26 km/h) |
| 25 mph (40.23 km/h) | 25.83 mph (41.57 km/h) |
| 30 mph (48.28 km/h) | 31 mph (49.88 km/h) |
| 35 mph (56.33 km/h) | 36.16 mph (58.2 km/h) |
| 40 mph (64.37 km/h) | 41.33 mph (66.51 km/h) |
| 45 mph (72.42 km/h) | 46.49 mph (74.83 km/h) |
| 50 mph (80.47 km/h) | 51.66 mph (83.14 km/h) |
| 55 mph (88.51 km/h) | 56.83 mph (91.45 km/h) |
| 60 mph (96.56 km/h) | 61.99 mph (99.77 km/h) |
| 65 mph (104.61 km/h) | 67.16 mph (108.08 km/h) |
| 70 mph (112.65 km/h) | 72.33 mph (116.4 km/h) |
| 75 mph (120.7 km/h) | 77.49 mph (124.71 km/h) |
| 80 mph (128.75 km/h) | 82.66 mph (133.02 km/h) |
| 85 mph (136.79 km/h) | 87.82 mph (141.34 km/h) |
| 90 mph (144.84 km/h) | 92.99 mph (149.65 km/h) |
| 95 mph (152.89 km/h) | 98.16 mph (157.97 km/h) |
| 100 mph (160.93 km/h) | 103.32 mph (166.28 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1386 | 1610 | 1734 | 1811 | 1893 | 1952 | 2017 | 2094 | 2200 | 2306 | 2424 | 2518 | 2689 | 2878 | 3025 | 3120 | 3173 | 3367 | 3639 | 4228 |
Better Fuel Economy Factory Ratios Increased Power
