[1speedbike]

I have STs (same as KWs but not stainless) and my front specs are L/R: 22 1/8" / 22" and I have about 3 inches of ground clearance up front with the 135i aero bumper. Assuming the 1M bumper gives similar stock ground clearance (a little less than the stock 135i m sport bumper), that's the lowest I'd go.. I already can barely make it into my own garage and I have to be careful on the street. It's not obnoxiously low, but I don't want to have to watch for every single little bump and expansion joint..