205/50R17 vs 225/45R17
225/45R17 is 3.0 mm shorter than 205/50R17 in overall diameter (−0.5%), within the usual 3% limit, so it can replace it where the wheels and clearance allow. With 225/45R17 fitted, the speedometer reads 100 km/h when you are doing 99.5 km/h.
Dimensions side by side
| 205/50R17 | 225/45R17 | |
|---|---|---|
| Overall diameter | 637 mm (25.1″) | 634 mm (25.0″) |
| Section width | 205 mm | 225 mm |
| Sidewall height | 103 mm | 101 mm |
| Rim | 17″ | 17″ |
| Revolutions per km | 500 | 502 |
| In stock | 35 tires from $103.00 | 59 tires from $101.00 |
What changes
- Overall diameter: 225/45R17 is 3.0 mm shorter (−0.5%).
- Speedometer: reads 100 km/h at an actual 99.5 km/h with 225/45R17.
- 225/45R17 is 20 mm wider, so check clearance and the recommended rim width.
- Choose a load index at least as high as the one on your door placard.
Vehicles that came with both sizes
Vehicles that use 205/50R17
Vehicles that use 225/45R17
See every alternate size for 205/50R17
Frequently asked questions
Can I use 225/45R17 instead of 205/50R17?
Usually, yes: 225/45R17 is within 3% of the overall diameter of 205/50R17 (−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 205/50R17 and 225/45R17?
With 225/45R17 instead of 205/50R17, the speedometer shows 100 km/h when you are actually doing 99.5 km/h.
Which vehicles came with both 205/50R17 and 225/45R17?
Both sizes were original equipment, on different trims or packages, on the 2008–2013 BMW 128i, 2011–2013 BMW 135i, 2002–2005 BMW 330i, 2002 BMW 330Ci.