Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 255/40-20 | 265/40-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 28.03 (712) | 28.35 (720) | 0.31 (8) 1.1% |
| Width inches (mm) | 10.04 (255) | 10.43 (265) | 0.39 (10) 3.9% |
| Circum. inches (mm) | 88.06 (2236.81) | 89.05 (2261.95) | 0.99 (25.13) 1.1% |
| Sidewall Height inches (mm) | 4.02 (102) | 4.17 (106) | 0.16 (4) 3.9% |
| Revolutions per mile (km) | 719.48 (447.06) | 711.49 (442.1) | -7.99 (-4.97) -1.1% |
265/40-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.22 mph (32.55 km/h) |
| 25 mph (40.23 km/h) | 25.28 mph (40.69 km/h) |
| 30 mph (48.28 km/h) | 30.34 mph (48.82 km/h) |
| 35 mph (56.33 km/h) | 35.39 mph (56.96 km/h) |
| 40 mph (64.37 km/h) | 40.45 mph (65.1 km/h) |
| 45 mph (72.42 km/h) | 45.51 mph (73.23 km/h) |
| 50 mph (80.47 km/h) | 50.56 mph (81.37 km/h) |
| 55 mph (88.51 km/h) | 55.62 mph (89.51 km/h) |
| 60 mph (96.56 km/h) | 60.67 mph (97.65 km/h) |
| 65 mph (104.61 km/h) | 65.73 mph (105.78 km/h) |
| 70 mph (112.65 km/h) | 70.79 mph (113.92 km/h) |
| 75 mph (120.7 km/h) | 75.84 mph (122.06 km/h) |
| 80 mph (128.75 km/h) | 80.9 mph (130.19 km/h) |
| 85 mph (136.79 km/h) | 85.96 mph (138.33 km/h) |
| 90 mph (144.84 km/h) | 91.01 mph (146.47 km/h) |
| 95 mph (152.89 km/h) | 96.07 mph (154.61 km/h) |
| 100 mph (160.93 km/h) | 101.12 mph (162.74 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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