Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 305/35-23 | 245/50-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 31.41 (797.7) | 29.65 (753) | -1.76 (-44.7) -5.6% |
| Width inches (mm) | 12.01 (305) | 9.65 (245) | -2.36 (-60) -19.7% |
| Circum. inches (mm) | 98.66 (2506.05) | 93.13 (2365.62) | -5.53 (-140.43) -5.6% |
| Sidewall Height inches (mm) | 4.2 (106.75) | 4.82 (122.5) | 0.62 (15.75) 14.8% |
| Revolutions per mile (km) | 642.18 (399.03) | 680.31 (422.72) | 38.12 (23.69) 5.9% |
245/50-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.88 mph (30.38 km/h) |
| 25 mph (40.23 km/h) | 23.6 mph (37.98 km/h) |
| 30 mph (48.28 km/h) | 28.32 mph (45.57 km/h) |
| 35 mph (56.33 km/h) | 33.04 mph (53.17 km/h) |
| 40 mph (64.37 km/h) | 37.76 mph (60.77 km/h) |
| 45 mph (72.42 km/h) | 42.48 mph (68.36 km/h) |
| 50 mph (80.47 km/h) | 47.2 mph (75.96 km/h) |
| 55 mph (88.51 km/h) | 51.92 mph (83.55 km/h) |
| 60 mph (96.56 km/h) | 56.64 mph (91.15 km/h) |
| 65 mph (104.61 km/h) | 61.36 mph (98.75 km/h) |
| 70 mph (112.65 km/h) | 66.08 mph (106.34 km/h) |
| 75 mph (120.7 km/h) | 70.8 mph (113.94 km/h) |
| 80 mph (128.75 km/h) | 75.52 mph (121.53 km/h) |
| 85 mph (136.79 km/h) | 80.24 mph (129.13 km/h) |
| 90 mph (144.84 km/h) | 84.96 mph (136.72 km/h) |
| 95 mph (152.89 km/h) | 89.68 mph (144.32 km/h) |
| 100 mph (160.93 km/h) | 94.4 mph (151.92 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1731 | 2011 | 2166 | 2262 | 2365 | 2438 | 2520 | 2615 | 2748 | 2881 | 3028 | 3146 | 3359 | 3595 | 3779 | 3897 | 3963 | 4207 | 4545 | 5282 |
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