Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 245/45-19 | 235/55-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.68 (703.1) | 30.18 (766.5) | 2.5 (63.4) 9% |
| Width inches (mm) | 9.65 (245) | 9.25 (235) | -0.39 (-10) -4.1% |
| Circum. inches (mm) | 86.96 (2208.85) | 94.8 (2408.03) | 7.84 (199.18) 9% |
| Sidewall Height inches (mm) | 4.34 (110.25) | 5.09 (129.25) | 0.75 (19) 17.2% |
| Revolutions per mile (km) | 728.59 (452.72) | 668.32 (415.28) | -60.26 (-37.45) -8.3% |
235/55-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.8 mph (35.09 km/h) |
| 25 mph (40.23 km/h) | 27.25 mph (43.86 km/h) |
| 30 mph (48.28 km/h) | 32.71 mph (52.63 km/h) |
| 35 mph (56.33 km/h) | 38.16 mph (61.41 km/h) |
| 40 mph (64.37 km/h) | 43.61 mph (70.18 km/h) |
| 45 mph (72.42 km/h) | 49.06 mph (78.95 km/h) |
| 50 mph (80.47 km/h) | 54.51 mph (87.72 km/h) |
| 55 mph (88.51 km/h) | 59.96 mph (96.5 km/h) |
| 60 mph (96.56 km/h) | 65.41 mph (105.27 km/h) |
| 65 mph (104.61 km/h) | 70.86 mph (114.04 km/h) |
| 70 mph (112.65 km/h) | 76.31 mph (122.81 km/h) |
| 75 mph (120.7 km/h) | 81.76 mph (131.58 km/h) |
| 80 mph (128.75 km/h) | 87.21 mph (140.36 km/h) |
| 85 mph (136.79 km/h) | 92.66 mph (149.13 km/h) |
| 90 mph (144.84 km/h) | 98.12 mph (157.9 km/h) |
| 95 mph (152.89 km/h) | 103.57 mph (166.67 km/h) |
| 100 mph (160.93 km/h) | 109.02 mph (175.45 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1701 | 1976 | 2128 | 2222 | 2323 | 2396 | 2475 | 2569 | 2699 | 2830 | 2975 | 3090 | 3300 | 3532 | 3713 | 3829 | 3894 | 4132 | 4465 | 5189 |
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