Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 245/40-19 | 245/35-21 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.72 (678.6) | 27.75 (704.9) | 1.04 (26.3) 3.9% |
| Width inches (mm) | 9.65 (245) | 9.65 (245) | 0 (0) 0% |
| Circum. inches (mm) | 83.93 (2131.88) | 87.19 (2214.51) | 3.25 (82.62) 3.9% |
| Sidewall Height inches (mm) | 3.86 (98) | 3.38 (85.75) | -0.48 (-12.25) -12.5% |
| Revolutions per mile (km) | 754.89 (469.07) | 726.73 (451.57) | -28.17 (-17.5) -3.7% |
245/35-21 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.78 mph (33.43 km/h) |
| 25 mph (40.23 km/h) | 25.97 mph (41.79 km/h) |
| 30 mph (48.28 km/h) | 31.16 mph (50.15 km/h) |
| 35 mph (56.33 km/h) | 36.36 mph (58.51 km/h) |
| 40 mph (64.37 km/h) | 41.55 mph (66.87 km/h) |
| 45 mph (72.42 km/h) | 46.74 mph (75.23 km/h) |
| 50 mph (80.47 km/h) | 51.94 mph (83.59 km/h) |
| 55 mph (88.51 km/h) | 57.13 mph (91.94 km/h) |
| 60 mph (96.56 km/h) | 62.33 mph (100.3 km/h) |
| 65 mph (104.61 km/h) | 67.52 mph (108.66 km/h) |
| 70 mph (112.65 km/h) | 72.71 mph (117.02 km/h) |
| 75 mph (120.7 km/h) | 77.91 mph (125.38 km/h) |
| 80 mph (128.75 km/h) | 83.1 mph (133.74 km/h) |
| 85 mph (136.79 km/h) | 88.29 mph (142.1 km/h) |
| 90 mph (144.84 km/h) | 93.49 mph (150.45 km/h) |
| 95 mph (152.89 km/h) | 98.68 mph (158.81 km/h) |
| 100 mph (160.93 km/h) | 103.88 mph (167.17 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1849 | 2148 | 2314 | 2416 | 2526 | 2605 | 2691 | 2794 | 2935 | 3077 | 3234 | 3360 | 3589 | 3840 | 4037 | 4163 | 4234 | 4494 | 4856 | 5643 |
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