Just had my new 2007 650CIC Sport last week, changed to 20" wheels/tires, SSR GT3 20x8.5, 20X9.5, now need to lower it about 1", any advice? which brand? don't like too bumpy ride, H&R, Eibach, or Dinan? and any idea how much I can get from the stock RFT tires(less than 400 miles)? thanks.