Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 245/30-21 | 235/35-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.79 (680.4) | 26.48 (672.5) | -0.31 (-7.9) -1.2% |
| Width inches (mm) | 9.65 (245) | 9.25 (235) | -0.39 (-10) -4.1% |
| Circum. inches (mm) | 84.16 (2137.54) | 83.18 (2112.72) | -0.98 (-24.82) -1.2% |
| Sidewall Height inches (mm) | 2.89 (73.5) | 3.24 (82.25) | 0.34 (8.75) 11.9% |
| Revolutions per mile (km) | 752.9 (467.83) | 761.74 (473.32) | 8.84 (5.5) 1.2% |
235/35-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.77 mph (31.81 km/h) |
| 25 mph (40.23 km/h) | 24.71 mph (39.77 km/h) |
| 30 mph (48.28 km/h) | 29.65 mph (47.72 km/h) |
| 35 mph (56.33 km/h) | 34.59 mph (55.67 km/h) |
| 40 mph (64.37 km/h) | 39.54 mph (63.63 km/h) |
| 45 mph (72.42 km/h) | 44.48 mph (71.58 km/h) |
| 50 mph (80.47 km/h) | 49.42 mph (79.53 km/h) |
| 55 mph (88.51 km/h) | 54.36 mph (87.49 km/h) |
| 60 mph (96.56 km/h) | 59.3 mph (95.44 km/h) |
| 65 mph (104.61 km/h) | 64.25 mph (103.39 km/h) |
| 70 mph (112.65 km/h) | 69.19 mph (111.35 km/h) |
| 75 mph (120.7 km/h) | 74.13 mph (119.3 km/h) |
| 80 mph (128.75 km/h) | 79.07 mph (127.25 km/h) |
| 85 mph (136.79 km/h) | 84.01 mph (135.21 km/h) |
| 90 mph (144.84 km/h) | 88.96 mph (143.16 km/h) |
| 95 mph (152.89 km/h) | 93.9 mph (151.11 km/h) |
| 100 mph (160.93 km/h) | 98.84 mph (159.07 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1938 | 2252 | 2425 | 2532 | 2648 | 2730 | 2821 | 2928 | 3077 | 3225 | 3390 | 3522 | 3761 | 4025 | 4232 | 4364 | 4438 | 4710 | 5090 | 5914 |
Better Fuel Economy Factory Ratios Increased Power
