Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 315/40-19 | 325/30-19 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 28.92 (734.6) | 26.68 (677.6) | -2.24 (-57) -7.8% |
| Width inches (mm) | 12.4 (315) | 12.8 (325) | 0.39 (10) 3.2% |
| Circum. inches (mm) | 90.86 (2307.81) | 83.81 (2128.74) | -7.05 (-179.07) -7.8% |
| Sidewall Height inches (mm) | 4.96 (126) | 3.84 (97.5) | -1.12 (-28.5) -22.6% |
| Revolutions per mile (km) | 697.35 (433.31) | 756.01 (469.76) | 58.66 (36.45) 8.4% |
325/30-19 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.45 mph (29.69 km/h) |
| 25 mph (40.23 km/h) | 23.06 mph (37.11 km/h) |
| 30 mph (48.28 km/h) | 27.67 mph (44.53 km/h) |
| 35 mph (56.33 km/h) | 32.28 mph (51.96 km/h) |
| 40 mph (64.37 km/h) | 36.9 mph (59.38 km/h) |
| 45 mph (72.42 km/h) | 41.51 mph (66.8 km/h) |
| 50 mph (80.47 km/h) | 46.12 mph (74.22 km/h) |
| 55 mph (88.51 km/h) | 50.73 mph (81.65 km/h) |
| 60 mph (96.56 km/h) | 55.34 mph (89.07 km/h) |
| 65 mph (104.61 km/h) | 59.96 mph (96.49 km/h) |
| 70 mph (112.65 km/h) | 64.57 mph (103.91 km/h) |
| 75 mph (120.7 km/h) | 69.18 mph (111.34 km/h) |
| 80 mph (128.75 km/h) | 73.79 mph (118.76 km/h) |
| 85 mph (136.79 km/h) | 78.4 mph (126.18 km/h) |
| 90 mph (144.84 km/h) | 83.02 mph (133.6 km/h) |
| 95 mph (152.89 km/h) | 87.63 mph (141.02 km/h) |
| 100 mph (160.93 km/h) | 92.24 mph (148.45 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1924 | 2235 | 2407 | 2513 | 2628 | 2710 | 2800 | 2906 | 3054 | 3201 | 3365 | 3496 | 3733 | 3995 | 4200 | 4331 | 4404 | 4675 | 5051 | 5870 |
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