Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 225/65-18 | 245/65-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 29.52 (749.7) | 30.54 (775.7) | 1.02 (26) 3.5% |
| Width inches (mm) | 8.86 (225) | 9.65 (245) | 0.79 (20) 8.9% |
| Circum. inches (mm) | 92.73 (2355.25) | 95.94 (2436.93) | 3.22 (81.68) 3.5% |
| Sidewall Height inches (mm) | 5.76 (146.25) | 6.27 (159.25) | 0.51 (13) 8.9% |
| Revolutions per mile (km) | 683.3 (424.58) | 660.4 (410.35) | -22.9 (-14.23) -3.4% |
245/65-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.69 mph (33.3 km/h) |
| 25 mph (40.23 km/h) | 25.87 mph (41.63 km/h) |
| 30 mph (48.28 km/h) | 31.04 mph (49.95 km/h) |
| 35 mph (56.33 km/h) | 36.21 mph (58.28 km/h) |
| 40 mph (64.37 km/h) | 41.39 mph (66.61 km/h) |
| 45 mph (72.42 km/h) | 46.56 mph (74.93 km/h) |
| 50 mph (80.47 km/h) | 51.73 mph (83.26 km/h) |
| 55 mph (88.51 km/h) | 56.91 mph (91.58 km/h) |
| 60 mph (96.56 km/h) | 62.08 mph (99.91 km/h) |
| 65 mph (104.61 km/h) | 67.25 mph (108.24 km/h) |
| 70 mph (112.65 km/h) | 72.43 mph (116.56 km/h) |
| 75 mph (120.7 km/h) | 77.6 mph (124.89 km/h) |
| 80 mph (128.75 km/h) | 82.77 mph (133.21 km/h) |
| 85 mph (136.79 km/h) | 87.95 mph (141.54 km/h) |
| 90 mph (144.84 km/h) | 93.12 mph (149.86 km/h) |
| 95 mph (152.89 km/h) | 98.29 mph (158.19 km/h) |
| 100 mph (160.93 km/h) | 103.47 mph (166.52 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1681 | 1952 | 2103 | 2195 | 2296 | 2367 | 2446 | 2539 | 2667 | 2796 | 2939 | 3054 | 3261 | 3490 | 3669 | 3783 | 3847 | 4083 | 4412 | 5128 |
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