Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 175/80-13 | 275/70-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.02 (610.2) | 33.16 (842.2) | 9.13 (232) 38% |
| Width inches (mm) | 6.89 (175) | 10.83 (275) | 3.94 (100) 57.1% |
| Circum. inches (mm) | 75.47 (1917) | 104.17 (2645.85) | 28.69 (728.85) 38% |
| Sidewall Height inches (mm) | 5.51 (140) | 7.58 (192.5) | 2.07 (52.5) 37.5% |
| Revolutions per mile (km) | 839.51 (521.65) | 608.25 (377.95) | -231.26 (-143.7) -27.5% |
275/70-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 27.6 mph (44.42 km/h) |
| 25 mph (40.23 km/h) | 34.51 mph (55.53 km/h) |
| 30 mph (48.28 km/h) | 41.41 mph (66.64 km/h) |
| 35 mph (56.33 km/h) | 48.31 mph (77.74 km/h) |
| 40 mph (64.37 km/h) | 55.21 mph (88.85 km/h) |
| 45 mph (72.42 km/h) | 62.11 mph (99.96 km/h) |
| 50 mph (80.47 km/h) | 69.01 mph (111.06 km/h) |
| 55 mph (88.51 km/h) | 75.91 mph (122.17 km/h) |
| 60 mph (96.56 km/h) | 82.81 mph (133.27 km/h) |
| 65 mph (104.61 km/h) | 89.71 mph (144.38 km/h) |
| 70 mph (112.65 km/h) | 96.61 mph (155.49 km/h) |
| 75 mph (120.7 km/h) | 103.52 mph (166.59 km/h) |
| 80 mph (128.75 km/h) | 110.42 mph (177.7 km/h) |
| 85 mph (136.79 km/h) | 117.32 mph (188.8 km/h) |
| 90 mph (144.84 km/h) | 124.22 mph (199.91 km/h) |
| 95 mph (152.89 km/h) | 131.12 mph (211.02 km/h) |
| 100 mph (160.93 km/h) | 138.02 mph (222.12 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1548 | 1798 | 1937 | 2022 | 2114 | 2180 | 2253 | 2338 | 2457 | 2575 | 2707 | 2813 | 3004 | 3214 | 3379 | 3484 | 3544 | 3761 | 4064 | 4723 |
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