Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 245/50-20 | 305/40-22 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 29.65 (753) | 31.61 (802.8) | 1.96 (49.8) 6.6% |
| Width inches (mm) | 9.65 (245) | 12.01 (305) | 2.36 (60) 24.5% |
| Circum. inches (mm) | 93.13 (2365.62) | 99.29 (2522.07) | 6.16 (156.45) 6.6% |
| Sidewall Height inches (mm) | 4.82 (122.5) | 4.8 (122) | -0.02 (-0.5) -0.4% |
| Revolutions per mile (km) | 680.31 (422.72) | 638.1 (396.5) | -42.2 (-26.22) -6.2% |
305/40-22 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.32 mph (34.32 km/h) |
| 25 mph (40.23 km/h) | 26.65 mph (42.89 km/h) |
| 30 mph (48.28 km/h) | 31.98 mph (51.47 km/h) |
| 35 mph (56.33 km/h) | 37.31 mph (60.05 km/h) |
| 40 mph (64.37 km/h) | 42.65 mph (68.63 km/h) |
| 45 mph (72.42 km/h) | 47.98 mph (77.21 km/h) |
| 50 mph (80.47 km/h) | 53.31 mph (85.79 km/h) |
| 55 mph (88.51 km/h) | 58.64 mph (94.37 km/h) |
| 60 mph (96.56 km/h) | 63.97 mph (102.95 km/h) |
| 65 mph (104.61 km/h) | 69.3 mph (111.53 km/h) |
| 70 mph (112.65 km/h) | 74.63 mph (120.1 km/h) |
| 75 mph (120.7 km/h) | 79.96 mph (128.68 km/h) |
| 80 mph (128.75 km/h) | 85.29 mph (137.26 km/h) |
| 85 mph (136.79 km/h) | 90.62 mph (145.84 km/h) |
| 90 mph (144.84 km/h) | 95.95 mph (154.42 km/h) |
| 95 mph (152.89 km/h) | 101.28 mph (163 km/h) |
| 100 mph (160.93 km/h) | 106.61 mph (171.58 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1624 | 1886 | 2032 | 2121 | 2218 | 2287 | 2363 | 2453 | 2577 | 2702 | 2840 | 2951 | 3151 | 3372 | 3545 | 3655 | 3718 | 3946 | 4263 | 4954 |
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