I used Race Ramps - Yes, you need the extender ramps or you will scrape the front getting off post lip install - these are very expensive but worth every penny if you dont have lift available:
https://www.raceramps.com/garage-ser...ace/p/RR-56-2/
https://www.raceramps.com/garage-ser...rs/p/xtenders/
https://g20.bimmerpost.com/forums/sh...3#post26711153