When I first brought 2015 prius series 5 , wow this don't handle at all ( body roll, needed steering correction , over bumps body flex etc, ) first remedies 1. Cusco frt sway&;frt power brace. 2. Trd rear sway bar. 3. Cusco center brace. 4, Trd spring set. Wow cornering is out standing! ( coming from driving wrx, gti, feista st and c7) but it's not comfortable on city streets. So off with 17" oem wheel Toya a20 on with 16" on michelin premier a/s lot better ride, cornering not as crisp as the 17 toyo. Still I love the car but my c7 rides better than the prius even in track mode! So I am looking into rsr low springs.any feed back would be appreciated many Thanks!