Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 265/35-18 | 245/40-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.3 (642.7) | 25.72 (653.2) | 0.41 (10.5) 1.6% |
| Width inches (mm) | 10.43 (265) | 9.65 (245) | -0.79 (-20) -7.5% |
| Circum. inches (mm) | 79.49 (2019.1) | 80.79 (2052.09) | 1.3 (32.99) 1.6% |
| Sidewall Height inches (mm) | 3.65 (92.75) | 3.86 (98) | 0.21 (5.25) 5.7% |
| Revolutions per mile (km) | 797.06 (495.27) | 784.25 (487.31) | -12.81 (-7.96) -1.6% |
245/40-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.33 mph (32.71 km/h) |
| 25 mph (40.23 km/h) | 25.41 mph (40.89 km/h) |
| 30 mph (48.28 km/h) | 30.49 mph (49.07 km/h) |
| 35 mph (56.33 km/h) | 35.57 mph (57.25 km/h) |
| 40 mph (64.37 km/h) | 40.65 mph (65.43 km/h) |
| 45 mph (72.42 km/h) | 45.74 mph (73.6 km/h) |
| 50 mph (80.47 km/h) | 50.82 mph (81.78 km/h) |
| 55 mph (88.51 km/h) | 55.9 mph (89.96 km/h) |
| 60 mph (96.56 km/h) | 60.98 mph (98.14 km/h) |
| 65 mph (104.61 km/h) | 66.06 mph (106.32 km/h) |
| 70 mph (112.65 km/h) | 71.14 mph (114.49 km/h) |
| 75 mph (120.7 km/h) | 76.23 mph (122.67 km/h) |
| 80 mph (128.75 km/h) | 81.31 mph (130.85 km/h) |
| 85 mph (136.79 km/h) | 86.39 mph (139.03 km/h) |
| 90 mph (144.84 km/h) | 91.47 mph (147.21 km/h) |
| 95 mph (152.89 km/h) | 96.55 mph (155.39 km/h) |
| 100 mph (160.93 km/h) | 101.63 mph (163.56 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1996 | 2318 | 2497 | 2607 | 2726 | 2811 | 2904 | 3015 | 3168 | 3321 | 3490 | 3626 | 3873 | 4144 | 4357 | 4493 | 4569 | 4849 | 5240 | 6089 |
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