Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 235/35-19 | 245/40-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.48 (647.1) | 25.72 (653.2) | 0.24 (6.1) 0.9% |
| Width inches (mm) | 9.25 (235) | 9.65 (245) | 0.39 (10) 4.3% |
| Circum. inches (mm) | 80.04 (2032.92) | 80.79 (2052.09) | 0.75 (19.16) 0.9% |
| Sidewall Height inches (mm) | 3.24 (82.25) | 3.86 (98) | 0.62 (15.75) 19.1% |
| Revolutions per mile (km) | 791.64 (491.9) | 784.25 (487.31) | -7.39 (-4.59) -0.9% |
245/40-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.19 mph (32.49 km/h) |
| 25 mph (40.23 km/h) | 25.24 mph (40.61 km/h) |
| 30 mph (48.28 km/h) | 30.28 mph (48.74 km/h) |
| 35 mph (56.33 km/h) | 35.33 mph (56.86 km/h) |
| 40 mph (64.37 km/h) | 40.38 mph (64.98 km/h) |
| 45 mph (72.42 km/h) | 45.42 mph (73.1 km/h) |
| 50 mph (80.47 km/h) | 50.47 mph (81.23 km/h) |
| 55 mph (88.51 km/h) | 55.52 mph (89.35 km/h) |
| 60 mph (96.56 km/h) | 60.57 mph (97.47 km/h) |
| 65 mph (104.61 km/h) | 65.61 mph (105.59 km/h) |
| 70 mph (112.65 km/h) | 70.66 mph (113.72 km/h) |
| 75 mph (120.7 km/h) | 75.71 mph (121.84 km/h) |
| 80 mph (128.75 km/h) | 80.75 mph (129.96 km/h) |
| 85 mph (136.79 km/h) | 85.8 mph (138.08 km/h) |
| 90 mph (144.84 km/h) | 90.85 mph (146.21 km/h) |
| 95 mph (152.89 km/h) | 95.9 mph (154.33 km/h) |
| 100 mph (160.93 km/h) | 100.94 mph (162.45 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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