Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 225/60-18 | 265/40-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 28.63 (727.2) | 28.35 (720) | -0.28 (-7.2) -1% |
| Width inches (mm) | 8.86 (225) | 10.43 (265) | 1.57 (40) 17.8% |
| Circum. inches (mm) | 89.94 (2284.57) | 89.05 (2261.95) | -0.89 (-22.62) -1% |
| Sidewall Height inches (mm) | 5.31 (135) | 4.17 (106) | -1.14 (-29) -21.5% |
| Revolutions per mile (km) | 704.44 (437.72) | 711.49 (442.1) | 7.04 (4.38) 1% |
265/40-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.8 mph (31.87 km/h) |
| 25 mph (40.23 km/h) | 24.75 mph (39.84 km/h) |
| 30 mph (48.28 km/h) | 29.7 mph (47.8 km/h) |
| 35 mph (56.33 km/h) | 34.65 mph (55.77 km/h) |
| 40 mph (64.37 km/h) | 39.6 mph (63.74 km/h) |
| 45 mph (72.42 km/h) | 44.55 mph (71.7 km/h) |
| 50 mph (80.47 km/h) | 49.5 mph (79.67 km/h) |
| 55 mph (88.51 km/h) | 54.46 mph (87.64 km/h) |
| 60 mph (96.56 km/h) | 59.41 mph (95.6 km/h) |
| 65 mph (104.61 km/h) | 64.36 mph (103.57 km/h) |
| 70 mph (112.65 km/h) | 69.31 mph (111.54 km/h) |
| 75 mph (120.7 km/h) | 74.26 mph (119.51 km/h) |
| 80 mph (128.75 km/h) | 79.21 mph (127.47 km/h) |
| 85 mph (136.79 km/h) | 84.16 mph (135.44 km/h) |
| 90 mph (144.84 km/h) | 89.11 mph (143.41 km/h) |
| 95 mph (152.89 km/h) | 94.06 mph (151.37 km/h) |
| 100 mph (160.93 km/h) | 99.01 mph (159.34 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1811 | 2103 | 2265 | 2365 | 2473 | 2550 | 2635 | 2735 | 2874 | 3013 | 3167 | 3290 | 3513 | 3760 | 3952 | 4076 | 4145 | 4399 | 4754 | 5524 |
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