Nice looking wheels. What are they, and what are the specs? Tire size recommendations would depend on the wheel specs.
I take it that's a BMW fitment? 245s all around will definitely help the performance and the look - those 225s up front definitely look goofy! You could maybe do stock size 235/50-18s up front and then do 255/45s in the rear, just to accentuate the staggered look. Unfortunately, neither of those combos has a ton of good options in the performance tire realm.Sidewall is a must. Im running 255/35/18 rear 225/40/18 front. I have been eyeballing some 245/50/18 all around. The rims are style 71 chromadora rims. Two piece setup, 18/8 front 18/8.5 rear. I have hub rings coming.
Unfortunately, I'm fairly certain nobody makes any performance-oriented replacement dampers (like Koni or Bilstein). The only option is to go to coilovers, which obviously can be expensive. You can get cheapy ones from KSport or D2, maybe others. KW makes their Variant3s for the 2nd gen CTS, but they're pretty damn expensive.Far as my suspension, im going to upgrade from stock only cause I have FE1 suspension. Just some nice bilsteins, slotted rortors maybe, I want the brakes a little more "grabby".