I have the same rims, but in 17". Standard on the Titanium Energi. I tried to get 19's but the dealership wouldn't do it. I had planned to keep 19's for summer and 17's with winter tires. The suspension on all fusion models are the same. There is no upgrade with the Titanium. However as you increase your rim size you end up with a smaller and stiffer sidewall, which is why you get a stiffer ride. You have less buffer space for an impact to disperse. After a few winters on Michigan roads, you'll have so many dents in your rim you may as well be riding with Fred Flintstone.