Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 235/55-20 | 235/65-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 30.18 (766.5) | 29.03 (737.3) | -1.15 (-29.2) -3.8% |
| Width inches (mm) | 9.25 (235) | 9.25 (235) | 0 (0) 0% |
| Circum. inches (mm) | 94.8 (2408.03) | 91.19 (2316.3) | -3.61 (-91.73) -3.8% |
| Sidewall Height inches (mm) | 5.09 (129.25) | 6.01 (152.75) | 0.93 (23.5) 18.2% |
| Revolutions per mile (km) | 668.32 (415.28) | 694.79 (431.72) | 26.47 (16.45) 4% |
235/65-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.24 mph (30.96 km/h) |
| 25 mph (40.23 km/h) | 24.05 mph (38.7 km/h) |
| 30 mph (48.28 km/h) | 28.86 mph (46.44 km/h) |
| 35 mph (56.33 km/h) | 33.67 mph (54.18 km/h) |
| 40 mph (64.37 km/h) | 38.48 mph (61.92 km/h) |
| 45 mph (72.42 km/h) | 43.29 mph (69.66 km/h) |
| 50 mph (80.47 km/h) | 48.1 mph (77.4 km/h) |
| 55 mph (88.51 km/h) | 52.9 mph (85.14 km/h) |
| 60 mph (96.56 km/h) | 57.71 mph (92.88 km/h) |
| 65 mph (104.61 km/h) | 62.52 mph (100.62 km/h) |
| 70 mph (112.65 km/h) | 67.33 mph (108.36 km/h) |
| 75 mph (120.7 km/h) | 72.14 mph (116.1 km/h) |
| 80 mph (128.75 km/h) | 76.95 mph (123.84 km/h) |
| 85 mph (136.79 km/h) | 81.76 mph (131.58 km/h) |
| 90 mph (144.84 km/h) | 86.57 mph (139.32 km/h) |
| 95 mph (152.89 km/h) | 91.38 mph (147.06 km/h) |
| 100 mph (160.93 km/h) | 96.19 mph (154.8 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1768 | 2054 | 2212 | 2310 | 2415 | 2490 | 2573 | 2671 | 2806 | 2942 | 3092 | 3213 | 3431 | 3672 | 3860 | 3980 | 4048 | 4296 | 4642 | 5395 |
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