Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 270/70-16 | 305/65-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 30.88 (784.4) | 32.61 (828.3) | 1.73 (43.9) 5.6% |
| Width inches (mm) | 10.63 (270) | 12.01 (305) | 1.38 (35) 13% |
| Circum. inches (mm) | 97.02 (2464.27) | 102.45 (2602.18) | 5.43 (137.92) 5.6% |
| Sidewall Height inches (mm) | 7.44 (189) | 7.81 (198.25) | 0.36 (9.25) 4.9% |
| Revolutions per mile (km) | 653.07 (405.8) | 618.46 (384.29) | -34.61 (-21.51) -5.3% |
305/65-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.12 mph (33.99 km/h) |
| 25 mph (40.23 km/h) | 26.4 mph (42.49 km/h) |
| 30 mph (48.28 km/h) | 31.68 mph (50.98 km/h) |
| 35 mph (56.33 km/h) | 36.96 mph (59.48 km/h) |
| 40 mph (64.37 km/h) | 42.24 mph (67.98 km/h) |
| 45 mph (72.42 km/h) | 47.52 mph (76.47 km/h) |
| 50 mph (80.47 km/h) | 52.8 mph (84.97 km/h) |
| 55 mph (88.51 km/h) | 58.08 mph (93.47 km/h) |
| 60 mph (96.56 km/h) | 63.36 mph (101.96 km/h) |
| 65 mph (104.61 km/h) | 68.64 mph (110.46 km/h) |
| 70 mph (112.65 km/h) | 73.92 mph (118.96 km/h) |
| 75 mph (120.7 km/h) | 79.2 mph (127.46 km/h) |
| 80 mph (128.75 km/h) | 84.48 mph (135.95 km/h) |
| 85 mph (136.79 km/h) | 89.76 mph (144.45 km/h) |
| 90 mph (144.84 km/h) | 95.04 mph (152.95 km/h) |
| 95 mph (152.89 km/h) | 100.32 mph (161.44 km/h) |
| 100 mph (160.93 km/h) | 105.6 mph (169.94 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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