I had the same concern so I tried the R line in my local showroom. Initial impressions it felt similar to my current R line on 18s so it didn't put me off ordering one. When I drove my current one home it felt more jittery on the rough roads near where I live so I hope my impressions are right and the new one is an improvement. I have preferred the ride on my R line to the ride on my previous match model that had 17s and no sports suspension. The real diffence will be noticed in the winter when the tyres are much colder. The biggest improvement on the new one is it's quieter and more refined.