All coilovers adjust their ride height via a threaded shock body or sleeve. It's not something you want to mess with after you have your alignment set and ideally the car corner balanced. On the other hand, Ride stiffness is easy to adjust on an adjustable coilover. You would be surprised at the smooth ride quality with some coilovers.
'13 SSII M3 Coupe - KW Clubsport 3-way, Akrapovic Evolution, ESS Tune, StopTech Trophy, IND Euro Front Bumper and Gloss Black Mirror Covers, TMS Studs/Lugs, BMW Performance Carbon Fiber Spoiler/Interior Trim/Center Console, BMW Edition Grills/Gills, BMWPedals Extended DCT Paddles, Advan TC3 18x9.5 & 18x10.5 - Hankook RS3 (Track), HRE R40 - 18x10 & 18x11 - Michelin PSS (Street)