Originally posted by Donald@Nov 1 2005, 09:01 PM
Any sifu know what is the different of the Bilstein Shock, I saw from the web site there is 2 types of sport shock. (Yellow Colour)
- BMW 3 Series HD Shock
- BMW 3 Series Sport Shock
Just curious what is the different between the two?
There has been a lot of discussion on this before and I am still confused myself but here goes anyway..... I know some of you here will disagree
:
You wont hear people talking as much about this issue in the UK/Europe, but you do see a lot of discxussion on this topic in the US.
In UK/Europe I think people just refer to the yellow bilsteins as being Sports shocks. This general reference is used commonly unless specifc refernce is made to a particular Bilstein kit e.g. the PSS or PSS9 which are coil-overs.
There are however adverts in UK mags which talk about the Bilstein 'sprintline' set and Bilstein 'sportline' set. Both are described as matched spring and shock sets.What separates them is that the 'sportlines' comes with shorter shocks (and presumebly shorter springs).
I have seen discussions in US forums which say that - the 'HDs' are essentially Bilstein yellows that have a standard 'body' length (like stock) and therefore can be matched with standard springs. They can aslo be matched with uprated springs which do not lower the car too aggresively e.g. the Eibach pro-kits (which incidentally are designed to go with stock shocks if so chosen).
The 'sports' in the meantime have a shorter 'body' length and are therefore better matched with aggressive springs (I saw a figure of a lowering of >1.5in quoted but I am sure this is just guesswork and a matter of preference). The shorter body of the shocks make it a better match with the shorter springs.
The commonality they have however is the fact that the shock valving for both the HD (yellow) and sport (yellow) are actually the same (not my words ok.... some dude in some US forum actually asked a rep from Bilstein USA or something....). As to which is better....I dont know....its one of those debates you see
To confuse matters, if you actually visit the Bilstein website you will not see a porduct called HDs etc. Instead you will see a range of prducts, some familiar and some not e.g. the blacks (which are gas OE replacement), B6, B12 PSS, PSS9 etc. I have a feeling that the base range of Bilstein (yellow) sport shocks could be the HDs people are referring to.... but thats just me guessing ...
In Malaysia on the other hand, when you mention HDs..... a lot of people will think you are referring to the black ones which are OE gas replacement shocks (good uns too. btter than BOGE turbogas :yes
. The yellow bilsteins are generally referred to as Bistein sports...... unless you are referring to specific Bilstein sports package e.g. the PSS series.
And so the debate continues.........