Q. Can i install diamond cut alloy wheel in SX automatic variant - Creta 2020?

As told by the technical person of Berlia Hyundai, Siliguri, West Bengal, creta sx parts are bigger (i.e) like suspension than creta s so need to change all these with stock tyres and rims of creta sx and trial run has to be done. To my knowledge there is a bit difference in the diameter of stock tyre size 17 and 16 varies so there may be inaccuracy in showing mileage in instrument cluster.

You should not, see these are balanced ,tested, at various speeds,turns, at times the g factor comes in also. lastly it has sensors in the wheels for air pressure warnings.

Yes you can, you can pay extra and exchange sx alloys to diamond cut alloys.