Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 235/85-15 | 235/75-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 30.73 (780.5) | 28.88 (733.5) | -1.85 (-47) -6% |
| Width inches (mm) | 9.25 (235) | 9.25 (235) | 0 (0) 0% |
| Circum. inches (mm) | 96.54 (2452.01) | 90.72 (2304.36) | -5.81 (-147.65) -6% |
| Sidewall Height inches (mm) | 7.86 (199.75) | 6.94 (176.25) | -0.93 (-23.5) -11.8% |
| Revolutions per mile (km) | 656.34 (407.83) | 698.39 (433.96) | 42.06 (26.13) 6.4% |
235/75-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.8 mph (30.25 km/h) |
| 25 mph (40.23 km/h) | 23.49 mph (37.81 km/h) |
| 30 mph (48.28 km/h) | 28.19 mph (45.37 km/h) |
| 35 mph (56.33 km/h) | 32.89 mph (52.94 km/h) |
| 40 mph (64.37 km/h) | 37.59 mph (60.5 km/h) |
| 45 mph (72.42 km/h) | 42.29 mph (68.06 km/h) |
| 50 mph (80.47 km/h) | 46.99 mph (75.62 km/h) |
| 55 mph (88.51 km/h) | 51.69 mph (83.18 km/h) |
| 60 mph (96.56 km/h) | 56.39 mph (90.75 km/h) |
| 65 mph (104.61 km/h) | 61.09 mph (98.31 km/h) |
| 70 mph (112.65 km/h) | 65.78 mph (105.87 km/h) |
| 75 mph (120.7 km/h) | 70.48 mph (113.43 km/h) |
| 80 mph (128.75 km/h) | 75.18 mph (120.99 km/h) |
| 85 mph (136.79 km/h) | 79.88 mph (128.56 km/h) |
| 90 mph (144.84 km/h) | 84.58 mph (136.12 km/h) |
| 95 mph (152.89 km/h) | 89.28 mph (143.68 km/h) |
| 100 mph (160.93 km/h) | 93.98 mph (151.24 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1777 | 2065 | 2223 | 2322 | 2428 | 2503 | 2586 | 2685 | 2821 | 2957 | 3108 | 3229 | 3449 | 3691 | 3880 | 4001 | 4069 | 4318 | 4666 | 5423 |
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