Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 175/45-15 | 175/65-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.2 (538.5) | 23.96 (608.5) | 2.76 (70) 13% |
| Width inches (mm) | 6.89 (175) | 6.89 (175) | 0 (0) 0% |
| Circum. inches (mm) | 66.6 (1691.75) | 75.26 (1911.66) | 8.66 (219.91) 13% |
| Sidewall Height inches (mm) | 3.1 (78.75) | 4.48 (113.75) | 1.38 (35) 44.4% |
| Revolutions per mile (km) | 951.29 (591.1) | 841.86 (523.1) | -109.43 (-68) -11.5% |
175/65-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.6 mph (36.37 km/h) |
| 25 mph (40.23 km/h) | 28.25 mph (45.46 km/h) |
| 30 mph (48.28 km/h) | 33.9 mph (54.56 km/h) |
| 35 mph (56.33 km/h) | 39.55 mph (63.65 km/h) |
| 40 mph (64.37 km/h) | 45.2 mph (72.74 km/h) |
| 45 mph (72.42 km/h) | 50.85 mph (81.83 km/h) |
| 50 mph (80.47 km/h) | 56.5 mph (90.93 km/h) |
| 55 mph (88.51 km/h) | 62.15 mph (100.02 km/h) |
| 60 mph (96.56 km/h) | 67.8 mph (109.11 km/h) |
| 65 mph (104.61 km/h) | 73.45 mph (118.21 km/h) |
| 70 mph (112.65 km/h) | 79.1 mph (127.3 km/h) |
| 75 mph (120.7 km/h) | 84.75 mph (136.39 km/h) |
| 80 mph (128.75 km/h) | 90.4 mph (145.48 km/h) |
| 85 mph (136.79 km/h) | 96.05 mph (154.58 km/h) |
| 90 mph (144.84 km/h) | 101.7 mph (163.67 km/h) |
| 95 mph (152.89 km/h) | 107.35 mph (172.76 km/h) |
| 100 mph (160.93 km/h) | 113 mph (181.85 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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