225/55R16 vs 235/45R17
235/45R17 is 11.0 mm shorter than 225/55R16 in overall diameter (−1.7%), within the usual 3% limit, so it can replace it where the wheels and clearance allow. With 235/45R17 fitted, the speedometer reads 100 km/h when you are doing 98.3 km/h.
Dimensions side by side
| 225/55R16 | 235/45R17 | |
|---|---|---|
| Overall diameter | 654 mm (25.7″) | 643 mm (25.3″) |
| Section width | 225 mm | 235 mm |
| Sidewall height | 124 mm | 106 mm |
| Rim | 16″ | 17″ |
| Revolutions per km | 487 | 495 |
| In stock | 5 tires from $109.00 | 21 tires from $119.00 |
What changes
- Overall diameter: 235/45R17 is 11.0 mm shorter (−1.7%).
- Speedometer: reads 100 km/h at an actual 98.3 km/h with 235/45R17.
- 235/45R17 is 10 mm wider, so check clearance and the recommended rim width.
- Wheel size changes from 16″ to 17″: 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 225/55R16
Vehicles that use 235/45R17
See every alternate size for 225/55R16
Frequently asked questions
Can I use 235/45R17 instead of 225/55R16?
Usually, yes: 235/45R17 is within 3% of the overall diameter of 225/55R16 (−1.7%). 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 225/55R16 and 235/45R17?
With 235/45R17 instead of 225/55R16, the speedometer shows 100 km/h when you are actually doing 98.3 km/h.
Which vehicles came with both 225/55R16 and 235/45R17?
Both sizes were original equipment, on different trims or packages, on the 1998–2005 Lexus GS, 2001–2003 BMW 525i, 2001–2003 BMW 540iA, 2002–2003 BMW 540iT, 2001 BMW 540i.