# /50 series tire aspect ratio

## What does /50 mean in a tire size?

A /50 aspect ratio means the tire sidewall height is 50% of the section width. For a 205/50R16 tire, the sidewall is 102.5mm tall. Common 50-series sizes span multiple rim diameters.

- [205/50 R16](https://tirefitlab.com/205-50-r16.md)
- [225/50 R16](https://tirefitlab.com/225-50-r16.md)
- [215/50 R17](https://tirefitlab.com/215-50-r17.md)
- [225/50 R17](https://tirefitlab.com/225-50-r17.md)
- [235/50 R18](https://tirefitlab.com/235-50-r18.md)
- [235/50 R19](https://tirefitlab.com/235-50-r19.md)
- [255/50 R19](https://tirefitlab.com/255-50-r19.md)
- [265/50 R19](https://tirefitlab.com/265-50-r19.md)
- [255/50 R20](https://tirefitlab.com/255-50-r20.md)
- [265/50 R20](https://tirefitlab.com/265-50-r20.md)
- [285/50 R20](https://tirefitlab.com/285-50-r20.md)

---
Methodology: https://tirefitlab.com/methodology/