Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 245/65-18 | 235/65-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 30.54 (775.7) | 30.03 (762.7) | -0.51 (-13) -1.7% |
| Width inches (mm) | 9.65 (245) | 9.25 (235) | -0.39 (-10) -4.1% |
| Circum. inches (mm) | 95.94 (2436.93) | 94.33 (2396.09) | -1.61 (-40.84) -1.7% |
| Sidewall Height inches (mm) | 6.27 (159.25) | 6.01 (152.75) | -0.26 (-6.5) -4.1% |
| Revolutions per mile (km) | 660.4 (410.35) | 671.65 (417.35) | 11.26 (6.99) 1.7% |
235/65-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.66 mph (31.65 km/h) |
| 25 mph (40.23 km/h) | 24.58 mph (39.56 km/h) |
| 30 mph (48.28 km/h) | 29.5 mph (47.47 km/h) |
| 35 mph (56.33 km/h) | 34.41 mph (55.38 km/h) |
| 40 mph (64.37 km/h) | 39.33 mph (63.3 km/h) |
| 45 mph (72.42 km/h) | 44.25 mph (71.21 km/h) |
| 50 mph (80.47 km/h) | 49.16 mph (79.12 km/h) |
| 55 mph (88.51 km/h) | 54.08 mph (87.03 km/h) |
| 60 mph (96.56 km/h) | 58.99 mph (94.94 km/h) |
| 65 mph (104.61 km/h) | 63.91 mph (102.85 km/h) |
| 70 mph (112.65 km/h) | 68.83 mph (110.77 km/h) |
| 75 mph (120.7 km/h) | 73.74 mph (118.68 km/h) |
| 80 mph (128.75 km/h) | 78.66 mph (126.59 km/h) |
| 85 mph (136.79 km/h) | 83.58 mph (134.5 km/h) |
| 90 mph (144.84 km/h) | 88.49 mph (142.41 km/h) |
| 95 mph (152.89 km/h) | 93.41 mph (150.33 km/h) |
| 100 mph (160.93 km/h) | 98.32 mph (158.24 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1709 | 1986 | 2138 | 2233 | 2335 | 2407 | 2487 | 2582 | 2713 | 2844 | 2989 | 3106 | 3317 | 3549 | 3731 | 3848 | 3913 | 4153 | 4488 | 5215 |
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