Hi Tang,

Michelin currently does not have tyre size for Ativa listed out on their website, however you can try going to their physical shop to ask. For original Ativa tyre size, you may refer to this sizing 205/60R17.

You can read this article to find out more about tyre sizing:

https://www.motorist.my/article/1468/the-new-car-owner-s-guide-vol-2-tyres