Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 305/55-22 | 275/65-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 35.21 (894.3) | 32.07 (814.7) | -3.13 (-79.6) -8.9% |
| Width inches (mm) | 12.01 (305) | 10.83 (275) | -1.18 (-30) -9.8% |
| Circum. inches (mm) | 110.61 (2809.53) | 100.77 (2559.46) | -9.85 (-250.07) -8.9% |
| Sidewall Height inches (mm) | 6.6 (167.75) | 7.04 (178.75) | 0.43 (11) 6.6% |
| Revolutions per mile (km) | 572.82 (355.93) | 628.78 (390.71) | 55.97 (34.78) 9.8% |
275/65-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.22 mph (29.32 km/h) |
| 25 mph (40.23 km/h) | 22.77 mph (36.65 km/h) |
| 30 mph (48.28 km/h) | 27.33 mph (43.98 km/h) |
| 35 mph (56.33 km/h) | 31.88 mph (51.31 km/h) |
| 40 mph (64.37 km/h) | 36.44 mph (58.64 km/h) |
| 45 mph (72.42 km/h) | 40.99 mph (65.97 km/h) |
| 50 mph (80.47 km/h) | 45.55 mph (73.31 km/h) |
| 55 mph (88.51 km/h) | 50.1 mph (80.64 km/h) |
| 60 mph (96.56 km/h) | 54.66 mph (87.97 km/h) |
| 65 mph (104.61 km/h) | 59.21 mph (95.3 km/h) |
| 70 mph (112.65 km/h) | 63.77 mph (102.63 km/h) |
| 75 mph (120.7 km/h) | 68.32 mph (109.96 km/h) |
| 80 mph (128.75 km/h) | 72.88 mph (117.29 km/h) |
| 85 mph (136.79 km/h) | 77.43 mph (124.62 km/h) |
| 90 mph (144.84 km/h) | 81.99 mph (131.95 km/h) |
| 95 mph (152.89 km/h) | 86.54 mph (139.28 km/h) |
| 100 mph (160.93 km/h) | 91.1 mph (146.61 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1600 | 1859 | 2002 | 2090 | 2186 | 2254 | 2329 | 2417 | 2540 | 2662 | 2799 | 2907 | 3105 | 3323 | 3493 | 3602 | 3663 | 3888 | 4201 | 4882 |
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