Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 205/35-18 | 205/40-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 23.65 (600.7) | 24.46 (621.2) | 0.81 (20.5) 3.4% |
| Width inches (mm) | 8.07 (205) | 8.07 (205) | 0 (0) 0% |
| Circum. inches (mm) | 74.3 (1887.15) | 76.83 (1951.56) | 2.54 (64.4) 3.4% |
| Sidewall Height inches (mm) | 2.82 (71.75) | 3.23 (82) | 0.4 (10.25) 14.3% |
| Revolutions per mile (km) | 852.79 (529.9) | 824.65 (512.41) | -28.14 (-17.49) -3.3% |
205/40-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.68 mph (33.29 km/h) |
| 25 mph (40.23 km/h) | 25.85 mph (41.61 km/h) |
| 30 mph (48.28 km/h) | 31.02 mph (49.93 km/h) |
| 35 mph (56.33 km/h) | 36.19 mph (58.25 km/h) |
| 40 mph (64.37 km/h) | 41.37 mph (66.57 km/h) |
| 45 mph (72.42 km/h) | 46.54 mph (74.89 km/h) |
| 50 mph (80.47 km/h) | 51.71 mph (83.21 km/h) |
| 55 mph (88.51 km/h) | 56.88 mph (91.53 km/h) |
| 60 mph (96.56 km/h) | 62.05 mph (99.86 km/h) |
| 65 mph (104.61 km/h) | 67.22 mph (108.18 km/h) |
| 70 mph (112.65 km/h) | 72.39 mph (116.5 km/h) |
| 75 mph (120.7 km/h) | 77.56 mph (124.82 km/h) |
| 80 mph (128.75 km/h) | 82.73 mph (133.14 km/h) |
| 85 mph (136.79 km/h) | 87.9 mph (141.46 km/h) |
| 90 mph (144.84 km/h) | 93.07 mph (149.78 km/h) |
| 95 mph (152.89 km/h) | 98.24 mph (158.11 km/h) |
| 100 mph (160.93 km/h) | 103.41 mph (166.43 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2099 | 2438 | 2625 | 2742 | 2867 | 2956 | 3054 | 3170 | 3331 | 3492 | 3670 | 3813 | 4072 | 4358 | 4581 | 4724 | 4804 | 5099 | 5510 | 6403 |
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