Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 275/35-19 | 245/40-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.58 (675.1) | 25.72 (653.2) | -0.86 (-21.9) -3.2% |
| Width inches (mm) | 10.83 (275) | 9.65 (245) | -1.18 (-30) -10.9% |
| Circum. inches (mm) | 83.5 (2120.89) | 80.79 (2052.09) | -2.71 (-68.8) -3.2% |
| Sidewall Height inches (mm) | 3.79 (96.25) | 3.86 (98) | 0.07 (1.75) 1.8% |
| Revolutions per mile (km) | 758.81 (471.5) | 784.25 (487.31) | 25.44 (15.81) 3.4% |
245/40-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.35 mph (31.14 km/h) |
| 25 mph (40.23 km/h) | 24.19 mph (38.93 km/h) |
| 30 mph (48.28 km/h) | 29.03 mph (46.71 km/h) |
| 35 mph (56.33 km/h) | 33.86 mph (54.5 km/h) |
| 40 mph (64.37 km/h) | 38.7 mph (62.29 km/h) |
| 45 mph (72.42 km/h) | 43.54 mph (70.07 km/h) |
| 50 mph (80.47 km/h) | 48.38 mph (77.86 km/h) |
| 55 mph (88.51 km/h) | 53.22 mph (85.64 km/h) |
| 60 mph (96.56 km/h) | 58.05 mph (93.43 km/h) |
| 65 mph (104.61 km/h) | 62.89 mph (101.21 km/h) |
| 70 mph (112.65 km/h) | 67.73 mph (109 km/h) |
| 75 mph (120.7 km/h) | 72.57 mph (116.79 km/h) |
| 80 mph (128.75 km/h) | 77.4 mph (124.57 km/h) |
| 85 mph (136.79 km/h) | 82.24 mph (132.36 km/h) |
| 90 mph (144.84 km/h) | 87.08 mph (140.14 km/h) |
| 95 mph (152.89 km/h) | 91.92 mph (147.93 km/h) |
| 100 mph (160.93 km/h) | 96.76 mph (155.71 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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