Need some opinion. Currently using myvi g3 standard rim and tyre. 185/55/15 goodyear assurance tripplemax V1.

I think because of the tyre noise, passenger feel like im driving faster than im really am. So i’m thinking to using a quieter tyre.

After further research i think continental UC7 to fits my need of having quite tyre without having too much compromise on performance or wet safety.

My only concern is below:

1) would it void any warranty coz UC7 smallest size for the standard rim are 195/55/15. While the original tyre are 185/55/15

2) if i turn the steering at full left or right, would the tyre hit the fender?

3) does the slightly wider tyre increase fuel consumption by alot? Or it’s minimal for example less than 5%?

4) would it affect the various ADAS feature?