Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 275/70-18 | 305/70-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 33.16 (842.2) | 33.81 (858.8) | 0.65 (16.6) 2% |
| Width inches (mm) | 10.83 (275) | 12.01 (305) | 1.18 (30) 10.9% |
| Circum. inches (mm) | 104.17 (2645.85) | 106.22 (2698) | 2.05 (52.15) 2% |
| Sidewall Height inches (mm) | 7.58 (192.5) | 8.41 (213.5) | 0.83 (21) 10.9% |
| Revolutions per mile (km) | 608.25 (377.95) | 596.5 (370.64) | -11.76 (-7.31) -1.9% |
305/70-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.39 mph (32.82 km/h) |
| 25 mph (40.23 km/h) | 25.49 mph (41.03 km/h) |
| 30 mph (48.28 km/h) | 30.59 mph (49.23 km/h) |
| 35 mph (56.33 km/h) | 35.69 mph (57.44 km/h) |
| 40 mph (64.37 km/h) | 40.79 mph (65.64 km/h) |
| 45 mph (72.42 km/h) | 45.89 mph (73.85 km/h) |
| 50 mph (80.47 km/h) | 50.99 mph (82.05 km/h) |
| 55 mph (88.51 km/h) | 56.08 mph (90.26 km/h) |
| 60 mph (96.56 km/h) | 61.18 mph (98.46 km/h) |
| 65 mph (104.61 km/h) | 66.28 mph (106.67 km/h) |
| 70 mph (112.65 km/h) | 71.38 mph (114.87 km/h) |
| 75 mph (120.7 km/h) | 76.48 mph (123.08 km/h) |
| 80 mph (128.75 km/h) | 81.58 mph (131.29 km/h) |
| 85 mph (136.79 km/h) | 86.68 mph (139.49 km/h) |
| 90 mph (144.84 km/h) | 91.77 mph (147.7 km/h) |
| 95 mph (152.89 km/h) | 96.87 mph (155.9 km/h) |
| 100 mph (160.93 km/h) | 101.97 mph (164.11 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1518 | 1763 | 1899 | 1983 | 2073 | 2138 | 2209 | 2293 | 2409 | 2526 | 2655 | 2758 | 2946 | 3152 | 3314 | 3417 | 3475 | 3688 | 3985 | 4631 |
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