Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 345/30-19 | 315/35-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.15 (689.6) | 28.68 (728.5) | 1.53 (38.9) 5.6% |
| Width inches (mm) | 13.58 (345) | 12.4 (315) | -1.18 (-30) -8.7% |
| Circum. inches (mm) | 85.29 (2166.44) | 90.1 (2288.65) | 4.81 (122.21) 5.6% |
| Sidewall Height inches (mm) | 4.07 (103.5) | 4.34 (110.25) | 0.27 (6.75) 6.5% |
| Revolutions per mile (km) | 742.85 (461.59) | 703.18 (436.94) | -39.67 (-24.65) -5.3% |
315/35-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.13 mph (34 km/h) |
| 25 mph (40.23 km/h) | 26.41 mph (42.5 km/h) |
| 30 mph (48.28 km/h) | 31.69 mph (51 km/h) |
| 35 mph (56.33 km/h) | 36.97 mph (59.5 km/h) |
| 40 mph (64.37 km/h) | 42.26 mph (68.01 km/h) |
| 45 mph (72.42 km/h) | 47.54 mph (76.51 km/h) |
| 50 mph (80.47 km/h) | 52.82 mph (85.01 km/h) |
| 55 mph (88.51 km/h) | 58.1 mph (93.51 km/h) |
| 60 mph (96.56 km/h) | 63.38 mph (102.01 km/h) |
| 65 mph (104.61 km/h) | 68.67 mph (110.51 km/h) |
| 70 mph (112.65 km/h) | 73.95 mph (119.01 km/h) |
| 75 mph (120.7 km/h) | 79.23 mph (127.51 km/h) |
| 80 mph (128.75 km/h) | 84.51 mph (136.01 km/h) |
| 85 mph (136.79 km/h) | 89.79 mph (144.51 km/h) |
| 90 mph (144.84 km/h) | 95.08 mph (153.01 km/h) |
| 95 mph (152.89 km/h) | 100.36 mph (161.51 km/h) |
| 100 mph (160.93 km/h) | 105.64 mph (170.01 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1789 | 2079 | 2239 | 2338 | 2444 | 2520 | 2604 | 2703 | 2840 | 2977 | 3130 | 3252 | 3472 | 3716 | 3906 | 4028 | 4097 | 4348 | 4698 | 5460 |
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