Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 275/35-15 | 31/12.5-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 22.58 (573.5) | 31.03 (788.04) | 8.45 (214.54) 37.4% |
| Width inches (mm) | 10.83 (275) | 12.52 (318) | 1.69 (43) 15.6% |
| Circum. inches (mm) | 70.93 (1801.7) | 97.47 (2475.7) | 26.54 (674) 37.4% |
| Sidewall Height inches (mm) | 3.79 (96.25) | 8.01 (203.52) | 4.22 (107.27) 111.4% |
| Revolutions per mile (km) | 893.23 (555.03) | 650.06 (403.93) | -243.18 (-151.1) -27.2% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 27.48 mph (44.23 km/h) |
| 25 mph (40.23 km/h) | 34.35 mph (55.28 km/h) |
| 30 mph (48.28 km/h) | 41.22 mph (66.34 km/h) |
| 35 mph (56.33 km/h) | 48.09 mph (77.4 km/h) |
| 40 mph (64.37 km/h) | 54.96 mph (88.46 km/h) |
| 45 mph (72.42 km/h) | 61.83 mph (99.51 km/h) |
| 50 mph (80.47 km/h) | 68.7 mph (110.57 km/h) |
| 55 mph (88.51 km/h) | 75.57 mph (121.63 km/h) |
| 60 mph (96.56 km/h) | 82.45 mph (132.68 km/h) |
| 65 mph (104.61 km/h) | 89.32 mph (143.74 km/h) |
| 70 mph (112.65 km/h) | 96.19 mph (154.8 km/h) |
| 75 mph (120.7 km/h) | 103.06 mph (165.85 km/h) |
| 80 mph (128.75 km/h) | 109.93 mph (176.91 km/h) |
| 85 mph (136.79 km/h) | 116.8 mph (187.97 km/h) |
| 90 mph (144.84 km/h) | 123.67 mph (199.02 km/h) |
| 95 mph (152.89 km/h) | 130.54 mph (210.08 km/h) |
| 100 mph (160.93 km/h) | 137.41 mph (221.14 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1654 | 1922 | 2070 | 2161 | 2260 | 2330 | 2407 | 2499 | 2626 | 2752 | 2893 | 3006 | 3210 | 3435 | 3611 | 3724 | 3787 | 4020 | 4343 | 5047 |
Better Fuel Economy Factory Ratios Increased Power
