Probably a silly question, but how do I know for sure if I have this?
VIN sheet says I have DTC and DSC, but nothing indicated suspension option.

 

DTC and DSC are electrical control systems. Thinking that if your VIN look-up says nothing about "sport suspension" then you have the base suspension system.

Had a CMS all4 in a recent tour and I was amazed at how well the car handled, even with runflats.

 

Thats what I was thinking, but I am new to the Mini world, so figured it was better to ask than not.

Now to think about lowering springs

 

Should be some spring discussions in the Mod area. Thinking there is recent post of somebody lowering a CM.