Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 245/50-20 | 235/65-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 29.65 (753) | 29.03 (737.3) | -0.62 (-15.7) -2.1% |
| Width inches (mm) | 9.65 (245) | 9.25 (235) | -0.39 (-10) -4.1% |
| Circum. inches (mm) | 93.13 (2365.62) | 91.19 (2316.3) | -1.94 (-49.32) -2.1% |
| Sidewall Height inches (mm) | 4.82 (122.5) | 6.01 (152.75) | 1.19 (30.25) 24.7% |
| Revolutions per mile (km) | 680.31 (422.72) | 694.79 (431.72) | 14.49 (9) 2.1% |
235/65-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.58 mph (31.52 km/h) |
| 25 mph (40.23 km/h) | 24.48 mph (39.39 km/h) |
| 30 mph (48.28 km/h) | 29.37 mph (47.27 km/h) |
| 35 mph (56.33 km/h) | 34.27 mph (55.15 km/h) |
| 40 mph (64.37 km/h) | 39.17 mph (63.03 km/h) |
| 45 mph (72.42 km/h) | 44.06 mph (70.91 km/h) |
| 50 mph (80.47 km/h) | 48.96 mph (78.79 km/h) |
| 55 mph (88.51 km/h) | 53.85 mph (86.67 km/h) |
| 60 mph (96.56 km/h) | 58.75 mph (94.55 km/h) |
| 65 mph (104.61 km/h) | 63.64 mph (102.43 km/h) |
| 70 mph (112.65 km/h) | 68.54 mph (110.31 km/h) |
| 75 mph (120.7 km/h) | 73.44 mph (118.18 km/h) |
| 80 mph (128.75 km/h) | 78.33 mph (126.06 km/h) |
| 85 mph (136.79 km/h) | 83.23 mph (133.94 km/h) |
| 90 mph (144.84 km/h) | 88.12 mph (141.82 km/h) |
| 95 mph (152.89 km/h) | 93.02 mph (149.7 km/h) |
| 100 mph (160.93 km/h) | 97.92 mph (157.58 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1768 | 2054 | 2212 | 2310 | 2415 | 2490 | 2573 | 2671 | 2806 | 2942 | 3092 | 3213 | 3431 | 3672 | 3860 | 3980 | 4048 | 4296 | 4642 | 5395 |
Better Fuel Economy Factory Ratios Increased Power
