Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 245/65-17 | 235/65-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 29.54 (750.3) | 30.03 (762.7) | 0.49 (12.4) 1.7% |
| Width inches (mm) | 9.65 (245) | 9.25 (235) | -0.39 (-10) -4.1% |
| Circum. inches (mm) | 92.8 (2357.14) | 94.33 (2396.09) | 1.53 (38.96) 1.7% |
| Sidewall Height inches (mm) | 6.27 (159.25) | 6.01 (152.75) | -0.26 (-6.5) -4.1% |
| Revolutions per mile (km) | 682.75 (424.24) | 671.65 (417.35) | -11.1 (-6.9) -1.6% |
235/65-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.33 mph (32.72 km/h) |
| 25 mph (40.23 km/h) | 25.41 mph (40.9 km/h) |
| 30 mph (48.28 km/h) | 30.5 mph (49.08 km/h) |
| 35 mph (56.33 km/h) | 35.58 mph (57.26 km/h) |
| 40 mph (64.37 km/h) | 40.66 mph (65.44 km/h) |
| 45 mph (72.42 km/h) | 45.74 mph (73.62 km/h) |
| 50 mph (80.47 km/h) | 50.83 mph (81.8 km/h) |
| 55 mph (88.51 km/h) | 55.91 mph (89.98 km/h) |
| 60 mph (96.56 km/h) | 60.99 mph (98.16 km/h) |
| 65 mph (104.61 km/h) | 66.07 mph (106.34 km/h) |
| 70 mph (112.65 km/h) | 71.16 mph (114.52 km/h) |
| 75 mph (120.7 km/h) | 76.24 mph (122.7 km/h) |
| 80 mph (128.75 km/h) | 81.32 mph (130.88 km/h) |
| 85 mph (136.79 km/h) | 86.4 mph (139.06 km/h) |
| 90 mph (144.84 km/h) | 91.49 mph (147.23 km/h) |
| 95 mph (152.89 km/h) | 96.57 mph (155.41 km/h) |
| 100 mph (160.93 km/h) | 101.65 mph (163.59 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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