Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 215/65-16 | 245/45-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27 (685.9) | 28.68 (728.5) | 1.68 (42.6) 6.2% |
| Width inches (mm) | 8.46 (215) | 9.65 (245) | 1.18 (30) 14% |
| Circum. inches (mm) | 84.84 (2154.82) | 90.1 (2288.65) | 5.27 (133.83) 6.2% |
| Sidewall Height inches (mm) | 5.5 (139.75) | 4.34 (110.25) | -1.16 (-29.5) -21.1% |
| Revolutions per mile (km) | 746.86 (464.08) | 703.18 (436.94) | -43.67 (-27.14) -5.8% |
245/45-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.24 mph (34.19 km/h) |
| 25 mph (40.23 km/h) | 26.55 mph (42.73 km/h) |
| 30 mph (48.28 km/h) | 31.86 mph (51.28 km/h) |
| 35 mph (56.33 km/h) | 37.17 mph (59.83 km/h) |
| 40 mph (64.37 km/h) | 42.48 mph (68.37 km/h) |
| 45 mph (72.42 km/h) | 47.79 mph (76.92 km/h) |
| 50 mph (80.47 km/h) | 53.11 mph (85.47 km/h) |
| 55 mph (88.51 km/h) | 58.42 mph (94.01 km/h) |
| 60 mph (96.56 km/h) | 63.73 mph (102.56 km/h) |
| 65 mph (104.61 km/h) | 69.04 mph (111.1 km/h) |
| 70 mph (112.65 km/h) | 74.35 mph (119.65 km/h) |
| 75 mph (120.7 km/h) | 79.66 mph (128.2 km/h) |
| 80 mph (128.75 km/h) | 84.97 mph (136.74 km/h) |
| 85 mph (136.79 km/h) | 90.28 mph (145.29 km/h) |
| 90 mph (144.84 km/h) | 95.59 mph (153.84 km/h) |
| 95 mph (152.89 km/h) | 100.9 mph (162.38 km/h) |
| 100 mph (160.93 km/h) | 106.21 mph (170.93 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1789 | 2079 | 2239 | 2338 | 2444 | 2520 | 2604 | 2703 | 2840 | 2977 | 3130 | 3252 | 3472 | 3716 | 3906 | 4028 | 4097 | 4348 | 4698 | 5460 |
Better Fuel Economy Factory Ratios Increased Power
