Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 305/40-23 | 325/60-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 32.61 (828.2) | 33.35 (847.2) | 0.75 (19) 2.3% |
| Width inches (mm) | 12.01 (305) | 12.8 (325) | 0.79 (20) 6.6% |
| Circum. inches (mm) | 102.44 (2601.87) | 104.79 (2661.56) | 2.35 (59.69) 2.3% |
| Sidewall Height inches (mm) | 4.8 (122) | 7.68 (195) | 2.87 (73) 59.8% |
| Revolutions per mile (km) | 618.53 (384.34) | 604.66 (375.72) | -13.87 (-8.62) -2.2% |
325/60-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.46 mph (32.93 km/h) |
| 25 mph (40.23 km/h) | 25.57 mph (41.16 km/h) |
| 30 mph (48.28 km/h) | 30.69 mph (49.39 km/h) |
| 35 mph (56.33 km/h) | 35.8 mph (57.62 km/h) |
| 40 mph (64.37 km/h) | 40.92 mph (65.85 km/h) |
| 45 mph (72.42 km/h) | 46.03 mph (74.08 km/h) |
| 50 mph (80.47 km/h) | 51.15 mph (82.31 km/h) |
| 55 mph (88.51 km/h) | 56.26 mph (90.54 km/h) |
| 60 mph (96.56 km/h) | 61.38 mph (98.78 km/h) |
| 65 mph (104.61 km/h) | 66.49 mph (107.01 km/h) |
| 70 mph (112.65 km/h) | 71.61 mph (115.24 km/h) |
| 75 mph (120.7 km/h) | 76.72 mph (123.47 km/h) |
| 80 mph (128.75 km/h) | 81.84 mph (131.7 km/h) |
| 85 mph (136.79 km/h) | 86.95 mph (139.93 km/h) |
| 90 mph (144.84 km/h) | 92.06 mph (148.16 km/h) |
| 95 mph (152.89 km/h) | 97.18 mph (156.4 km/h) |
| 100 mph (160.93 km/h) | 102.29 mph (164.63 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1539 | 1788 | 1925 | 2010 | 2102 | 2167 | 2239 | 2324 | 2442 | 2560 | 2691 | 2796 | 2986 | 3195 | 3359 | 3464 | 3523 | 3739 | 4040 | 4695 |
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