Just ran my vin to double check, it says M sport suspension option #704This is what we're left with when the "Marketing" department screws up stuff.
The "M-sport" & "sport pkg" nomenclature is a mess...along with the new model & engine nomenclatures that don't mean anything anymore.
To the OP...most BMW enthusiast has a general concept of what an M model is, what a M-sport model is, and what a model is that has the "sport pkg" option. Unfortunately, BMW's marketing department has tossed all that out the window...and they call it what they want to call it.
In most markets, the e39 M-sport pkg (among owners) is a model that has some extra bits taken from that model platform's M vehicle. You may have some suspension parts and definitely some cosmetic parts that are M badged.
Then there are the models in a platform that have a "sport pkg" option...which may include a sport tuned suspension, perhaps different rear end gearing, plus some cosmetic parts thrown into the mix.
You can see in the chart below how the actual suspensions can vary. The I6 models may have a sport suspension (and even some similar body & cosmetic parts)...but DO NOT share any suspension components with the M model. But the V8 M-sport pkgs actually do share some suspension parts as the M5. These M suspensions are also sometimes referred to as M suspension 1 or M suspension II:
I have no doubt in that is what it "says"...but just to clarify...what you have installed on your e39 is just as it is listed on the chart above...it too says M sport pkg (for the I6, V8, and M5)...but you can see that the shocks used is not the same shock that is used on the M5 and the e39 V8s with the same "named" M sport pkg.Just ran my vin to double check, it says M sport suspension option #704