Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 175/50-15 | 175/65-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.89 (556) | 23.96 (608.5) | 2.07 (52.5) 9.4% |
| Width inches (mm) | 6.89 (175) | 6.89 (175) | 0 (0) 0% |
| Circum. inches (mm) | 68.77 (1746.73) | 75.26 (1911.66) | 6.49 (164.93) 9.4% |
| Sidewall Height inches (mm) | 3.44 (87.5) | 4.48 (113.75) | 1.03 (26.25) 30% |
| Revolutions per mile (km) | 921.35 (572.5) | 841.86 (523.1) | -79.49 (-49.39) -8.6% |
175/65-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.89 mph (35.23 km/h) |
| 25 mph (40.23 km/h) | 27.36 mph (44.03 km/h) |
| 30 mph (48.28 km/h) | 32.83 mph (52.84 km/h) |
| 35 mph (56.33 km/h) | 38.3 mph (61.65 km/h) |
| 40 mph (64.37 km/h) | 43.78 mph (70.45 km/h) |
| 45 mph (72.42 km/h) | 49.25 mph (79.26 km/h) |
| 50 mph (80.47 km/h) | 54.72 mph (88.07 km/h) |
| 55 mph (88.51 km/h) | 60.19 mph (96.87 km/h) |
| 60 mph (96.56 km/h) | 65.67 mph (105.68 km/h) |
| 65 mph (104.61 km/h) | 71.14 mph (114.49 km/h) |
| 70 mph (112.65 km/h) | 76.61 mph (123.29 km/h) |
| 75 mph (120.7 km/h) | 82.08 mph (132.1 km/h) |
| 80 mph (128.75 km/h) | 87.55 mph (140.9 km/h) |
| 85 mph (136.79 km/h) | 93.03 mph (149.71 km/h) |
| 90 mph (144.84 km/h) | 98.5 mph (158.52 km/h) |
| 95 mph (152.89 km/h) | 103.97 mph (167.32 km/h) |
| 100 mph (160.93 km/h) | 109.44 mph (176.13 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2142 | 2489 | 2680 | 2799 | 2926 | 3018 | 3118 | 3236 | 3400 | 3565 | 3747 | 3893 | 4157 | 4449 | 4677 | 4823 | 4905 | 5205 | 5625 | 6536 |
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