Bilstein's 4 (B4`s) will be exactly the same ride height as the B6`s, the only difference is that the B4`s are the non sport OEM recommended replacements and the B6`s are the sport replacement without lowering the car, they are 20% stiffer than the B`4s. Now it`s up to you if you want to pay more for the B6`s and get the 20% more stiffness, it`s not a bad idea if you want the car to feel more planted and hugging the road a little bit more. It`s all about your preference, they are pretty much the same as far as height goes. The B8`s are the sport suspension replacements, which should be used with shorter and lowering springs.
