Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 295/40-18 | 235/40-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.29 (693.2) | 25.4 (645.2) | -1.89 (-48) -6.9% |
| Width inches (mm) | 11.61 (295) | 9.25 (235) | -2.36 (-60) -20.3% |
| Circum. inches (mm) | 85.74 (2177.75) | 79.8 (2026.96) | -5.94 (-150.8) -6.9% |
| Sidewall Height inches (mm) | 4.65 (118) | 3.7 (94) | -0.94 (-24) -20.3% |
| Revolutions per mile (km) | 738.99 (459.19) | 793.97 (493.35) | 54.98 (34.16) 7.4% |
235/40-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.62 mph (29.96 km/h) |
| 25 mph (40.23 km/h) | 23.27 mph (37.45 km/h) |
| 30 mph (48.28 km/h) | 27.92 mph (44.94 km/h) |
| 35 mph (56.33 km/h) | 32.58 mph (52.43 km/h) |
| 40 mph (64.37 km/h) | 37.23 mph (59.92 km/h) |
| 45 mph (72.42 km/h) | 41.88 mph (67.41 km/h) |
| 50 mph (80.47 km/h) | 46.54 mph (74.9 km/h) |
| 55 mph (88.51 km/h) | 51.19 mph (82.39 km/h) |
| 60 mph (96.56 km/h) | 55.85 mph (89.87 km/h) |
| 65 mph (104.61 km/h) | 60.5 mph (97.36 km/h) |
| 70 mph (112.65 km/h) | 65.15 mph (104.85 km/h) |
| 75 mph (120.7 km/h) | 69.81 mph (112.34 km/h) |
| 80 mph (128.75 km/h) | 74.46 mph (119.83 km/h) |
| 85 mph (136.79 km/h) | 79.11 mph (127.32 km/h) |
| 90 mph (144.84 km/h) | 83.77 mph (134.81 km/h) |
| 95 mph (152.89 km/h) | 88.42 mph (142.3 km/h) |
| 100 mph (160.93 km/h) | 93.08 mph (149.79 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2021 | 2347 | 2528 | 2640 | 2760 | 2846 | 2940 | 3052 | 3207 | 3362 | 3534 | 3671 | 3921 | 4196 | 4411 | 4548 | 4626 | 4909 | 5305 | 6165 |
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