Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 165/80-15 | 235/75-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.39 (645) | 28.88 (733.5) | 3.48 (88.5) 13.7% |
| Width inches (mm) | 6.5 (165) | 9.25 (235) | 2.76 (70) 42.4% |
| Circum. inches (mm) | 79.78 (2026.33) | 90.72 (2304.36) | 10.95 (278.03) 13.7% |
| Sidewall Height inches (mm) | 5.2 (132) | 6.94 (176.25) | 1.74 (44.25) 33.5% |
| Revolutions per mile (km) | 794.22 (493.5) | 698.39 (433.96) | -95.83 (-59.54) -12.1% |
235/75-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.74 mph (36.6 km/h) |
| 25 mph (40.23 km/h) | 28.43 mph (45.75 km/h) |
| 30 mph (48.28 km/h) | 34.12 mph (54.9 km/h) |
| 35 mph (56.33 km/h) | 39.8 mph (64.06 km/h) |
| 40 mph (64.37 km/h) | 45.49 mph (73.21 km/h) |
| 45 mph (72.42 km/h) | 51.17 mph (82.36 km/h) |
| 50 mph (80.47 km/h) | 56.86 mph (91.51 km/h) |
| 55 mph (88.51 km/h) | 62.55 mph (100.66 km/h) |
| 60 mph (96.56 km/h) | 68.23 mph (109.81 km/h) |
| 65 mph (104.61 km/h) | 73.92 mph (118.96 km/h) |
| 70 mph (112.65 km/h) | 79.6 mph (128.11 km/h) |
| 75 mph (120.7 km/h) | 85.29 mph (137.26 km/h) |
| 80 mph (128.75 km/h) | 90.98 mph (146.41 km/h) |
| 85 mph (136.79 km/h) | 96.66 mph (155.56 km/h) |
| 90 mph (144.84 km/h) | 102.35 mph (164.71 km/h) |
| 95 mph (152.89 km/h) | 108.03 mph (173.87 km/h) |
| 100 mph (160.93 km/h) | 113.72 mph (183.02 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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