Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 225/40-18 | 235/35-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.09 (637.2) | 24.48 (621.7) | -0.61 (-15.5) -2.4% |
| Width inches (mm) | 8.86 (225) | 9.25 (235) | 0.39 (10) 4.4% |
| Circum. inches (mm) | 78.81 (2001.82) | 76.89 (1953.13) | -1.92 (-48.69) -2.4% |
| Sidewall Height inches (mm) | 3.54 (90) | 3.24 (82.25) | -0.31 (-7.75) -8.6% |
| Revolutions per mile (km) | 803.94 (499.54) | 823.98 (512) | 20.04 (12.45) 2.5% |
235/35-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.51 mph (31.4 km/h) |
| 25 mph (40.23 km/h) | 24.39 mph (39.25 km/h) |
| 30 mph (48.28 km/h) | 29.27 mph (47.11 km/h) |
| 35 mph (56.33 km/h) | 34.15 mph (54.96 km/h) |
| 40 mph (64.37 km/h) | 39.03 mph (62.81 km/h) |
| 45 mph (72.42 km/h) | 43.91 mph (70.66 km/h) |
| 50 mph (80.47 km/h) | 48.78 mph (78.51 km/h) |
| 55 mph (88.51 km/h) | 53.66 mph (86.36 km/h) |
| 60 mph (96.56 km/h) | 58.54 mph (94.21 km/h) |
| 65 mph (104.61 km/h) | 63.42 mph (102.06 km/h) |
| 70 mph (112.65 km/h) | 68.3 mph (109.91 km/h) |
| 75 mph (120.7 km/h) | 73.18 mph (117.76 km/h) |
| 80 mph (128.75 km/h) | 78.05 mph (125.62 km/h) |
| 85 mph (136.79 km/h) | 82.93 mph (133.47 km/h) |
| 90 mph (144.84 km/h) | 87.81 mph (141.32 km/h) |
| 95 mph (152.89 km/h) | 92.69 mph (149.17 km/h) |
| 100 mph (160.93 km/h) | 97.57 mph (157.02 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2097 | 2436 | 2623 | 2739 | 2864 | 2953 | 3052 | 3168 | 3328 | 3489 | 3667 | 3810 | 4069 | 4354 | 4577 | 4720 | 4801 | 5095 | 5505 | 6398 |
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