Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 31/12.5-17 | 245/65-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 31.02 (787.96) | 29.54 (750.3) | -1.48 (-37.66) -4.8% |
| Width inches (mm) | 12.52 (318) | 9.65 (245) | -2.87 (-73) -23% |
| Circum. inches (mm) | 97.46 (2475.45) | 92.8 (2357.14) | -4.66 (-118.31) -4.8% |
| Sidewall Height inches (mm) | 7.01 (178.08) | 6.27 (159.25) | -0.74 (-18.83) -10.6% |
| Revolutions per mile (km) | 650.12 (403.97) | 682.75 (424.24) | 32.63 (20.28) 5% |
245/65-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.04 mph (30.65 km/h) |
| 25 mph (40.23 km/h) | 23.81 mph (38.31 km/h) |
| 30 mph (48.28 km/h) | 28.57 mph (45.97 km/h) |
| 35 mph (56.33 km/h) | 33.33 mph (53.64 km/h) |
| 40 mph (64.37 km/h) | 38.09 mph (61.3 km/h) |
| 45 mph (72.42 km/h) | 42.85 mph (68.96 km/h) |
| 50 mph (80.47 km/h) | 47.61 mph (76.62 km/h) |
| 55 mph (88.51 km/h) | 52.37 mph (84.28 km/h) |
| 60 mph (96.56 km/h) | 57.13 mph (91.95 km/h) |
| 65 mph (104.61 km/h) | 61.89 mph (99.61 km/h) |
| 70 mph (112.65 km/h) | 66.65 mph (107.27 km/h) |
| 75 mph (120.7 km/h) | 71.42 mph (114.93 km/h) |
| 80 mph (128.75 km/h) | 76.18 mph (122.59 km/h) |
| 85 mph (136.79 km/h) | 80.94 mph (130.26 km/h) |
| 90 mph (144.84 km/h) | 85.7 mph (137.92 km/h) |
| 95 mph (152.89 km/h) | 90.46 mph (145.58 km/h) |
| 100 mph (160.93 km/h) | 95.22 mph (153.24 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1737 | 2018 | 2174 | 2270 | 2373 | 2447 | 2529 | 2625 | 2758 | 2891 | 3039 | 3157 | 3371 | 3608 | 3793 | 3911 | 3978 | 4222 | 4562 | 5301 |
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