Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 225/65-18 | 235/75-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 29.52 (749.7) | 31.88 (809.7) | 2.36 (60) 8% |
| Width inches (mm) | 8.86 (225) | 9.25 (235) | 0.39 (10) 4.4% |
| Circum. inches (mm) | 92.73 (2355.25) | 100.15 (2543.75) | 7.42 (188.5) 8% |
| Sidewall Height inches (mm) | 5.76 (146.25) | 6.94 (176.25) | 1.18 (30) 20.5% |
| Revolutions per mile (km) | 683.3 (424.58) | 632.67 (393.12) | -50.63 (-31.46) -7.4% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.6 mph (34.76 km/h) |
| 25 mph (40.23 km/h) | 27 mph (43.45 km/h) |
| 30 mph (48.28 km/h) | 32.4 mph (52.14 km/h) |
| 35 mph (56.33 km/h) | 37.8 mph (60.84 km/h) |
| 40 mph (64.37 km/h) | 43.2 mph (69.53 km/h) |
| 45 mph (72.42 km/h) | 48.6 mph (78.22 km/h) |
| 50 mph (80.47 km/h) | 54 mph (86.91 km/h) |
| 55 mph (88.51 km/h) | 59.4 mph (95.6 km/h) |
| 60 mph (96.56 km/h) | 64.8 mph (104.29 km/h) |
| 65 mph (104.61 km/h) | 70.2 mph (112.98 km/h) |
| 70 mph (112.65 km/h) | 75.6 mph (121.67 km/h) |
| 75 mph (120.7 km/h) | 81 mph (130.36 km/h) |
| 80 mph (128.75 km/h) | 86.4 mph (139.05 km/h) |
| 85 mph (136.79 km/h) | 91.8 mph (147.74 km/h) |
| 90 mph (144.84 km/h) | 97.2 mph (156.43 km/h) |
| 95 mph (152.89 km/h) | 102.6 mph (165.12 km/h) |
| 100 mph (160.93 km/h) | 108 mph (173.81 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1610 | 1870 | 2014 | 2103 | 2199 | 2268 | 2343 | 2432 | 2555 | 2679 | 2816 | 2925 | 3124 | 3343 | 3515 | 3624 | 3686 | 3912 | 4227 | 4912 |
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