I don't want this to be too off putting, but after installing my Tanabe NF 210 springs and 205\50\16" wheels I had problems with too much body roll compared to stock..
To prove this I went back to narrow stock wheels and tires first, guess what, reduced body roll. I then installed my stock springs, the car height looked ugly but more stable than with Tanabe springs. why, I don't know.
I then fitted my BC coilovers in with my 205\50\16" wheels and tires and it's a different car. I also tried it with the narrow stock tires and it was even better. Again, Why I don't know.
I have talked to many people about this and they put it down to the wider tires with softer walls which in return gives body roll. The more road grip with a wider tire equals more body roll. Then you must install sway bars at an added cost.
Let the modding problem begin and it will never end.
Update:
I have been driving with my BC coilovers for 2 weeks now and they have settled down with no problems at all. I am running on Front 5 and Rear 6 out of 30 settings. I think the F 4k/R 5k springs are just right. Infact the car feels so good, I just drive it. It's awsome!!
