Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 235/70-18 | 245/60-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 30.95 (786.2) | 29.57 (751.2) | -1.38 (-35) -4.5% |
| Width inches (mm) | 9.25 (235) | 9.65 (245) | 0.39 (10) 4.3% |
| Circum. inches (mm) | 97.24 (2469.92) | 92.91 (2359.96) | -4.33 (-109.96) -4.5% |
| Sidewall Height inches (mm) | 6.48 (164.5) | 5.79 (147) | -0.69 (-17.5) -10.6% |
| Revolutions per mile (km) | 651.58 (404.87) | 681.94 (423.73) | 30.36 (18.86) 4.7% |
245/60-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.11 mph (30.75 km/h) |
| 25 mph (40.23 km/h) | 23.89 mph (38.44 km/h) |
| 30 mph (48.28 km/h) | 28.66 mph (46.13 km/h) |
| 35 mph (56.33 km/h) | 33.44 mph (53.82 km/h) |
| 40 mph (64.37 km/h) | 38.22 mph (61.51 km/h) |
| 45 mph (72.42 km/h) | 43 mph (69.2 km/h) |
| 50 mph (80.47 km/h) | 47.77 mph (76.89 km/h) |
| 55 mph (88.51 km/h) | 52.55 mph (84.57 km/h) |
| 60 mph (96.56 km/h) | 57.33 mph (92.26 km/h) |
| 65 mph (104.61 km/h) | 62.11 mph (99.95 km/h) |
| 70 mph (112.65 km/h) | 66.88 mph (107.64 km/h) |
| 75 mph (120.7 km/h) | 71.66 mph (115.33 km/h) |
| 80 mph (128.75 km/h) | 76.44 mph (123.02 km/h) |
| 85 mph (136.79 km/h) | 81.22 mph (130.7 km/h) |
| 90 mph (144.84 km/h) | 85.99 mph (138.39 km/h) |
| 95 mph (152.89 km/h) | 90.77 mph (146.08 km/h) |
| 100 mph (160.93 km/h) | 95.55 mph (153.77 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1735 | 2016 | 2171 | 2267 | 2370 | 2444 | 2526 | 2622 | 2754 | 2887 | 3035 | 3153 | 3367 | 3604 | 3788 | 3906 | 3973 | 4217 | 4556 | 5295 |
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