[mw14113]

Hi everyone,
I currently have the not ztk pack wheels and tyre sets from bmw and im wondering what are the biggest tyre sizes i can put on them. They're currently running 225/40/19 in the front and 255/35/19 in the back. Im thinking of bolting on some 245/40 or 235/40 in the front and 275/35 in the rear. Should that be okay?

These are the wheel dimensions for those who want to know :
8Jx19 ET27 - Front
8.5Jx19 ET40 - Rear