225/45R17 vs 225/50R16
225/50R16 is 3.0 mm shorter than 225/45R17 in overall diameter (−0.5%), within the usual 3% limit, so it can replace it where the wheels and clearance allow. With 225/50R16 fitted, the speedometer reads 100 km/h when you are doing 99.5 km/h.
Dimensions side by side
| 225/45R17 | 225/50R16 | |
|---|---|---|
| Overall diameter | 634 mm (25.0″) | 631 mm (24.8″) |
| Section width | 225 mm | 225 mm |
| Sidewall height | 101 mm | 113 mm |
| Rim | 17″ | 16″ |
| Revolutions per km | 502 | 504 |
| In stock | 59 tires from $101.00 | 1 tire from $292.00 |
What changes
- Overall diameter: 225/50R16 is 3.0 mm shorter (−0.5%).
- Speedometer: reads 100 km/h at an actual 99.5 km/h with 225/50R16.
- Wheel size changes from 17″ to 16″: you need wheels in the new size.
- Choose a load index at least as high as the one on your door placard.
Vehicles that came with both sizes
Vehicles that use 225/45R17
Vehicles that use 225/50R16
See every alternate size for 225/45R17
Frequently asked questions
Can I use 225/50R16 instead of 225/45R17?
Usually, yes: 225/50R16 is within 3% of the overall diameter of 225/45R17 (−0.5%). Use wheels of the right size and width, match or exceed the original load index, and check clearance at full steering lock.
How much does the speedometer change between 225/45R17 and 225/50R16?
With 225/50R16 instead of 225/45R17, the speedometer shows 100 km/h when you are actually doing 99.5 km/h.
Which vehicles came with both 225/45R17 and 225/50R16?
Both sizes were original equipment, on different trims or packages, on the 2003–2006 BMW Z4, 2001–2004 Volvo C70, 2001–2004 Mercedes-Benz SLK320, 2003–2004 Mercedes-Benz CLK320, 1997–2000 BMW Z3, 1992–1995 Porsche 968.