Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 345/35-15 | 315/50-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.51 (622.5) | 27.4 (696) | 2.89 (73.5) 11.8% |
| Width inches (mm) | 13.58 (345) | 12.4 (315) | -1.18 (-30) -8.7% |
| Circum. inches (mm) | 76.99 (1955.64) | 86.08 (2186.55) | 9.09 (230.91) 11.8% |
| Sidewall Height inches (mm) | 4.75 (120.75) | 6.2 (157.5) | 1.45 (36.75) 30.4% |
| Revolutions per mile (km) | 822.92 (511.34) | 736.02 (457.34) | -86.9 (-54) -10.6% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.36 mph (35.99 km/h) |
| 25 mph (40.23 km/h) | 27.95 mph (44.98 km/h) |
| 30 mph (48.28 km/h) | 33.54 mph (53.98 km/h) |
| 35 mph (56.33 km/h) | 39.13 mph (62.98 km/h) |
| 40 mph (64.37 km/h) | 44.72 mph (71.97 km/h) |
| 45 mph (72.42 km/h) | 50.31 mph (80.97 km/h) |
| 50 mph (80.47 km/h) | 55.9 mph (89.97 km/h) |
| 55 mph (88.51 km/h) | 61.49 mph (98.97 km/h) |
| 60 mph (96.56 km/h) | 67.08 mph (107.96 km/h) |
| 65 mph (104.61 km/h) | 72.67 mph (116.96 km/h) |
| 70 mph (112.65 km/h) | 78.27 mph (125.96 km/h) |
| 75 mph (120.7 km/h) | 83.86 mph (134.95 km/h) |
| 80 mph (128.75 km/h) | 89.45 mph (143.95 km/h) |
| 85 mph (136.79 km/h) | 95.04 mph (152.95 km/h) |
| 90 mph (144.84 km/h) | 100.63 mph (161.94 km/h) |
| 95 mph (152.89 km/h) | 106.22 mph (170.94 km/h) |
| 100 mph (160.93 km/h) | 111.81 mph (179.94 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1873 | 2176 | 2343 | 2447 | 2558 | 2638 | 2726 | 2829 | 2973 | 3116 | 3276 | 3403 | 3634 | 3890 | 4089 | 4216 | 4288 | 4551 | 4918 | 5715 |
Better Fuel Economy Factory Ratios Increased Power
