SPURTREUE at 18 inches vs. 16″ ?!? !!!

Hello @ALL,… dear TT community, had a few months ago the org. 16 inch rims with org. tyres on my TT 132KW front. The track fidelity, as well as rideability and composure was really good for a sports car. Now I have the org. 18 inch V6 rims with corresponding tyres on my SchaTTz. The track loyalty is absolutely good in the dial to the 16 inch. If I want to speed up in the 2nd course, I need really much strength in the forearms to stop the car on the road. It was absolutely not like that in the 16s. How is it with you??? Or is something broken with me? Track rods? OR??? Thank you in advance,… and still a lot of PASS on TT’len.