Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 185/85-16 | 215/75-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 28.38 (720.9) | 27.7 (703.5) | -0.69 (-17.4) -2.4% |
| Width inches (mm) | 7.28 (185) | 8.46 (215) | 1.18 (30) 16.2% |
| Circum. inches (mm) | 89.16 (2264.77) | 87.01 (2210.11) | -2.15 (-54.66) -2.4% |
| Sidewall Height inches (mm) | 6.19 (157.25) | 6.35 (161.25) | 0.16 (4) 2.5% |
| Revolutions per mile (km) | 710.6 (441.54) | 728.17 (452.47) | 17.58 (10.92) 2.5% |
215/75-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.52 mph (31.41 km/h) |
| 25 mph (40.23 km/h) | 24.4 mph (39.26 km/h) |
| 30 mph (48.28 km/h) | 29.28 mph (47.12 km/h) |
| 35 mph (56.33 km/h) | 34.16 mph (54.97 km/h) |
| 40 mph (64.37 km/h) | 39.03 mph (62.82 km/h) |
| 45 mph (72.42 km/h) | 43.91 mph (70.67 km/h) |
| 50 mph (80.47 km/h) | 48.79 mph (78.53 km/h) |
| 55 mph (88.51 km/h) | 53.67 mph (86.38 km/h) |
| 60 mph (96.56 km/h) | 58.55 mph (94.23 km/h) |
| 65 mph (104.61 km/h) | 63.43 mph (102.08 km/h) |
| 70 mph (112.65 km/h) | 68.31 mph (109.94 km/h) |
| 75 mph (120.7 km/h) | 73.19 mph (117.79 km/h) |
| 80 mph (128.75 km/h) | 78.07 mph (125.64 km/h) |
| 85 mph (136.79 km/h) | 82.95 mph (133.49 km/h) |
| 90 mph (144.84 km/h) | 87.83 mph (141.35 km/h) |
| 95 mph (152.89 km/h) | 92.71 mph (149.2 km/h) |
| 100 mph (160.93 km/h) | 97.59 mph (157.05 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1853 | 2153 | 2318 | 2421 | 2531 | 2610 | 2697 | 2799 | 2941 | 3083 | 3241 | 3367 | 3596 | 3848 | 4045 | 4171 | 4242 | 4503 | 4865 | 5654 |
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