Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 175/80-13 | 185/80-13 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.02 (610.2) | 24.65 (626.2) | 0.63 (16) 2.6% |
| Width inches (mm) | 6.89 (175) | 7.28 (185) | 0.39 (10) 5.7% |
| Circum. inches (mm) | 75.47 (1917) | 77.45 (1967.27) | 1.98 (50.27) 2.6% |
| Sidewall Height inches (mm) | 5.51 (140) | 5.83 (148) | 0.31 (8) 5.7% |
| Revolutions per mile (km) | 839.51 (521.65) | 818.06 (508.32) | -21.45 (-13.33) -2.6% |
185/80-13 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.52 mph (33.03 km/h) |
| 25 mph (40.23 km/h) | 25.66 mph (41.29 km/h) |
| 30 mph (48.28 km/h) | 30.79 mph (49.55 km/h) |
| 35 mph (56.33 km/h) | 35.92 mph (57.8 km/h) |
| 40 mph (64.37 km/h) | 41.05 mph (66.06 km/h) |
| 45 mph (72.42 km/h) | 46.18 mph (74.32 km/h) |
| 50 mph (80.47 km/h) | 51.31 mph (82.58 km/h) |
| 55 mph (88.51 km/h) | 56.44 mph (90.84 km/h) |
| 60 mph (96.56 km/h) | 61.57 mph (99.09 km/h) |
| 65 mph (104.61 km/h) | 66.7 mph (107.35 km/h) |
| 70 mph (112.65 km/h) | 71.84 mph (115.61 km/h) |
| 75 mph (120.7 km/h) | 76.97 mph (123.87 km/h) |
| 80 mph (128.75 km/h) | 82.1 mph (132.12 km/h) |
| 85 mph (136.79 km/h) | 87.23 mph (140.38 km/h) |
| 90 mph (144.84 km/h) | 92.36 mph (148.64 km/h) |
| 95 mph (152.89 km/h) | 97.49 mph (156.9 km/h) |
| 100 mph (160.93 km/h) | 102.62 mph (165.15 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2082 | 2418 | 2604 | 2720 | 2844 | 2932 | 3030 | 3145 | 3304 | 3464 | 3641 | 3783 | 4040 | 4323 | 4545 | 4686 | 4766 | 5058 | 5466 | 6352 |
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