I had an overly excessive amount of roll with the red springs. I put progressive springs all the way around and ran it around the living room. it's a lot more stable. Now I'm waiting on a nice day to take it out and open it up. I'm still planning on putting a 3.3 suspension on it for the 16.4" width. Right now it's 14.5" wide and I have the original 5.75" diameter tires on it.