Tyre size for wets?

[ttonks993]

Currently running 225/45/19 on the front and 255/40/19 on the rear on my BMW F30 track car. I’m thinking about buying some F80 competition wheels and fitting some semi slicks to them, widening the track and contact patch by 40mm on the front and 30mm on the rear.

I then plan on using my OEM wheels for wets only.

Should I keep the standard 225/45/19 and 255/40/19 tyre size for wets?

Thanks