Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 235/70-16 | 275/45-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 28.95 (735.4) | 29.74 (755.5) | 0.79 (20.1) 2.7% |
| Width inches (mm) | 9.25 (235) | 10.83 (275) | 1.57 (40) 17% |
| Circum. inches (mm) | 90.96 (2310.33) | 93.44 (2373.47) | 2.49 (63.15) 2.7% |
| Sidewall Height inches (mm) | 6.48 (164.5) | 4.87 (123.75) | -1.6 (-40.75) -24.8% |
| Revolutions per mile (km) | 696.59 (432.84) | 678.05 (421.32) | -18.53 (-11.52) -2.7% |
275/45-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.55 mph (33.07 km/h) |
| 25 mph (40.23 km/h) | 25.68 mph (41.33 km/h) |
| 30 mph (48.28 km/h) | 30.82 mph (49.6 km/h) |
| 35 mph (56.33 km/h) | 35.96 mph (57.87 km/h) |
| 40 mph (64.37 km/h) | 41.09 mph (66.13 km/h) |
| 45 mph (72.42 km/h) | 46.23 mph (74.4 km/h) |
| 50 mph (80.47 km/h) | 51.37 mph (82.67 km/h) |
| 55 mph (88.51 km/h) | 56.5 mph (90.93 km/h) |
| 60 mph (96.56 km/h) | 61.64 mph (99.2 km/h) |
| 65 mph (104.61 km/h) | 66.78 mph (107.47 km/h) |
| 70 mph (112.65 km/h) | 71.91 mph (115.73 km/h) |
| 75 mph (120.7 km/h) | 77.05 mph (124 km/h) |
| 80 mph (128.75 km/h) | 82.19 mph (132.27 km/h) |
| 85 mph (136.79 km/h) | 87.32 mph (140.53 km/h) |
| 90 mph (144.84 km/h) | 92.46 mph (148.8 km/h) |
| 95 mph (152.89 km/h) | 97.6 mph (157.07 km/h) |
| 100 mph (160.93 km/h) | 102.73 mph (165.33 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1726 | 2005 | 2159 | 2254 | 2357 | 2430 | 2511 | 2607 | 2739 | 2871 | 3018 | 3135 | 3348 | 3583 | 3767 | 3884 | 3950 | 4193 | 4530 | 5265 |
Better Fuel Economy Factory Ratios Increased Power
