Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 27/8.5-15 | 235/75-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.08 (687.72) | 28.88 (733.5) | 1.8 (45.78) 6.7% |
| Width inches (mm) | 8.5 (216) | 9.25 (235) | 0.75 (19) 8.8% |
| Circum. inches (mm) | 85.06 (2160.54) | 90.72 (2304.36) | 5.66 (143.82) 6.7% |
| Sidewall Height inches (mm) | 6.04 (153.36) | 6.94 (176.25) | 0.9 (22.89) 14.9% |
| Revolutions per mile (km) | 744.88 (462.85) | 698.39 (433.96) | -46.49 (-28.89) -6.2% |
235/75-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.33 mph (34.33 km/h) |
| 25 mph (40.23 km/h) | 26.66 mph (42.91 km/h) |
| 30 mph (48.28 km/h) | 32 mph (51.49 km/h) |
| 35 mph (56.33 km/h) | 37.33 mph (60.08 km/h) |
| 40 mph (64.37 km/h) | 42.66 mph (68.66 km/h) |
| 45 mph (72.42 km/h) | 48 mph (77.24 km/h) |
| 50 mph (80.47 km/h) | 53.33 mph (85.82 km/h) |
| 55 mph (88.51 km/h) | 58.66 mph (94.41 km/h) |
| 60 mph (96.56 km/h) | 63.99 mph (102.99 km/h) |
| 65 mph (104.61 km/h) | 69.33 mph (111.57 km/h) |
| 70 mph (112.65 km/h) | 74.66 mph (120.15 km/h) |
| 75 mph (120.7 km/h) | 79.99 mph (128.74 km/h) |
| 80 mph (128.75 km/h) | 85.33 mph (137.32 km/h) |
| 85 mph (136.79 km/h) | 90.66 mph (145.9 km/h) |
| 90 mph (144.84 km/h) | 95.99 mph (154.48 km/h) |
| 95 mph (152.89 km/h) | 101.32 mph (163.07 km/h) |
| 100 mph (160.93 km/h) | 106.66 mph (171.65 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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