Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 215/40-12 | 215/35-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 18.77 (476.8) | 23.93 (607.7) | 5.15 (130.9) 27.5% |
| Width inches (mm) | 8.46 (215) | 8.46 (215) | 0 (0) 0% |
| Circum. inches (mm) | 58.97 (1497.91) | 75.16 (1909.15) | 16.19 (411.23) 27.5% |
| Sidewall Height inches (mm) | 3.39 (86) | 2.96 (75.25) | -0.42 (-10.75) -12.5% |
| Revolutions per mile (km) | 1074.39 (667.59) | 842.97 (523.79) | -231.43 (-143.8) -21.5% |
215/35-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 25.49 mph (41.02 km/h) |
| 25 mph (40.23 km/h) | 31.86 mph (51.28 km/h) |
| 30 mph (48.28 km/h) | 38.24 mph (61.54 km/h) |
| 35 mph (56.33 km/h) | 44.61 mph (71.79 km/h) |
| 40 mph (64.37 km/h) | 50.98 mph (82.05 km/h) |
| 45 mph (72.42 km/h) | 57.35 mph (92.3 km/h) |
| 50 mph (80.47 km/h) | 63.73 mph (102.56 km/h) |
| 55 mph (88.51 km/h) | 70.1 mph (112.81 km/h) |
| 60 mph (96.56 km/h) | 76.47 mph (123.07 km/h) |
| 65 mph (104.61 km/h) | 82.85 mph (133.33 km/h) |
| 70 mph (112.65 km/h) | 89.22 mph (143.58 km/h) |
| 75 mph (120.7 km/h) | 95.59 mph (153.84 km/h) |
| 80 mph (128.75 km/h) | 101.96 mph (164.09 km/h) |
| 85 mph (136.79 km/h) | 108.34 mph (174.35 km/h) |
| 90 mph (144.84 km/h) | 114.71 mph (184.61 km/h) |
| 95 mph (152.89 km/h) | 121.08 mph (194.86 km/h) |
| 100 mph (160.93 km/h) | 127.45 mph (205.12 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2145 | 2492 | 2684 | 2802 | 2930 | 3022 | 3122 | 3241 | 3405 | 3569 | 3752 | 3898 | 4163 | 4455 | 4683 | 4829 | 4911 | 5212 | 5632 | 6545 |
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