Hi , I picked up a Mk8 GTI yesterday.

(I know the mk8.5 is round the corner but I needed one now and I liked the Mk8 despite its infotainment quibbles. )

It came with 19 inch rims.

I will be doing a lot of commuting and getting through tyres so I did think I might change the wheels to 18” rims, for cheaper tyres.

However , the spec of my GTI includes :

*Adaptive Chassis Control DCC… for 19-inch alloy
wheels

and

Progressive steering… for 19-inch alloy wheels*

The question I have is , does the DCC and progressive steering … both “for 19 inch wheels” … mean that it would invalidate the warranty if the wheels were to be replaced with smaller ones ? And/or that the DCC and/or progressive steering would not work as well or even jeopardise safety ?

I would be grateful for an expert view on this please ! Thank you.