Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 315/70-17 | 305/65-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 34.36 (872.8) | 32.61 (828.3) | -1.75 (-44.5) -5.1% |
| Width inches (mm) | 12.4 (315) | 12.01 (305) | -0.39 (-10) -3.2% |
| Circum. inches (mm) | 107.95 (2741.98) | 102.45 (2602.18) | -5.5 (-139.8) -5.1% |
| Sidewall Height inches (mm) | 8.68 (220.5) | 7.81 (198.25) | -0.88 (-22.25) -10.1% |
| Revolutions per mile (km) | 586.93 (364.7) | 618.46 (384.29) | 31.53 (19.59) 5.4% |
305/65-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.98 mph (30.55 km/h) |
| 25 mph (40.23 km/h) | 23.73 mph (38.18 km/h) |
| 30 mph (48.28 km/h) | 28.47 mph (45.82 km/h) |
| 35 mph (56.33 km/h) | 33.22 mph (53.46 km/h) |
| 40 mph (64.37 km/h) | 37.96 mph (61.09 km/h) |
| 45 mph (72.42 km/h) | 42.71 mph (68.73 km/h) |
| 50 mph (80.47 km/h) | 47.45 mph (76.36 km/h) |
| 55 mph (88.51 km/h) | 52.2 mph (84 km/h) |
| 60 mph (96.56 km/h) | 56.94 mph (91.64 km/h) |
| 65 mph (104.61 km/h) | 61.69 mph (99.27 km/h) |
| 70 mph (112.65 km/h) | 66.43 mph (106.91 km/h) |
| 75 mph (120.7 km/h) | 71.18 mph (114.55 km/h) |
| 80 mph (128.75 km/h) | 75.92 mph (122.18 km/h) |
| 85 mph (136.79 km/h) | 80.67 mph (129.82 km/h) |
| 90 mph (144.84 km/h) | 85.41 mph (137.46 km/h) |
| 95 mph (152.89 km/h) | 90.16 mph (145.09 km/h) |
| 100 mph (160.93 km/h) | 94.9 mph (152.73 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1574 | 1828 | 1969 | 2056 | 2150 | 2217 | 2290 | 2378 | 2498 | 2619 | 2753 | 2860 | 3054 | 3268 | 3436 | 3543 | 3603 | 3824 | 4132 | 4802 |
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