Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 295/30-18 | 285/30-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.97 (634.2) | 24.73 (628.2) | -0.24 (-6) -0.9% |
| Width inches (mm) | 11.61 (295) | 11.22 (285) | -0.39 (-10) -3.4% |
| Circum. inches (mm) | 78.44 (1992.4) | 77.7 (1973.55) | -0.74 (-18.85) -0.9% |
| Sidewall Height inches (mm) | 3.48 (88.5) | 3.37 (85.5) | -0.12 (-3) -3.4% |
| Revolutions per mile (km) | 807.74 (501.91) | 815.46 (506.7) | 7.71 (4.79) 1% |
285/30-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.81 mph (31.88 km/h) |
| 25 mph (40.23 km/h) | 24.76 mph (39.85 km/h) |
| 30 mph (48.28 km/h) | 29.72 mph (47.82 km/h) |
| 35 mph (56.33 km/h) | 34.67 mph (55.79 km/h) |
| 40 mph (64.37 km/h) | 39.62 mph (63.76 km/h) |
| 45 mph (72.42 km/h) | 44.57 mph (71.74 km/h) |
| 50 mph (80.47 km/h) | 49.53 mph (79.71 km/h) |
| 55 mph (88.51 km/h) | 54.48 mph (87.68 km/h) |
| 60 mph (96.56 km/h) | 59.43 mph (95.65 km/h) |
| 65 mph (104.61 km/h) | 64.39 mph (103.62 km/h) |
| 70 mph (112.65 km/h) | 69.34 mph (111.59 km/h) |
| 75 mph (120.7 km/h) | 74.29 mph (119.56 km/h) |
| 80 mph (128.75 km/h) | 79.24 mph (127.53 km/h) |
| 85 mph (136.79 km/h) | 84.2 mph (135.5 km/h) |
| 90 mph (144.84 km/h) | 89.15 mph (143.47 km/h) |
| 95 mph (152.89 km/h) | 94.1 mph (151.44 km/h) |
| 100 mph (160.93 km/h) | 99.05 mph (159.41 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2075 | 2411 | 2596 | 2711 | 2835 | 2923 | 3020 | 3135 | 3294 | 3453 | 3629 | 3771 | 4027 | 4309 | 4530 | 4671 | 4751 | 5042 | 5448 | 6332 |
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