Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 185/70-13 | 185/80-13 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 23.2 (589.2) | 24.65 (626.2) | 1.46 (37) 6.3% |
| Width inches (mm) | 7.28 (185) | 7.28 (185) | 0 (0) 0% |
| Circum. inches (mm) | 72.88 (1851.03) | 77.45 (1967.27) | 4.58 (116.24) 6.3% |
| Sidewall Height inches (mm) | 5.1 (129.5) | 5.83 (148) | 0.73 (18.5) 14.3% |
| Revolutions per mile (km) | 869.43 (540.24) | 818.06 (508.32) | -51.37 (-31.92) -5.9% |
185/80-13 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.26 mph (34.21 km/h) |
| 25 mph (40.23 km/h) | 26.57 mph (42.76 km/h) |
| 30 mph (48.28 km/h) | 31.88 mph (51.31 km/h) |
| 35 mph (56.33 km/h) | 37.2 mph (59.86 km/h) |
| 40 mph (64.37 km/h) | 42.51 mph (68.42 km/h) |
| 45 mph (72.42 km/h) | 47.83 mph (76.97 km/h) |
| 50 mph (80.47 km/h) | 53.14 mph (85.52 km/h) |
| 55 mph (88.51 km/h) | 58.45 mph (94.07 km/h) |
| 60 mph (96.56 km/h) | 63.77 mph (102.62 km/h) |
| 65 mph (104.61 km/h) | 69.08 mph (111.18 km/h) |
| 70 mph (112.65 km/h) | 74.4 mph (119.73 km/h) |
| 75 mph (120.7 km/h) | 79.71 mph (128.28 km/h) |
| 80 mph (128.75 km/h) | 85.02 mph (136.83 km/h) |
| 85 mph (136.79 km/h) | 90.34 mph (145.38 km/h) |
| 90 mph (144.84 km/h) | 95.65 mph (153.94 km/h) |
| 95 mph (152.89 km/h) | 100.97 mph (162.49 km/h) |
| 100 mph (160.93 km/h) | 106.28 mph (171.04 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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