Before this, my go-to was a Subaru. Decided to have some fun so I just purchased and have been driving (for 2 weeks) a 2018 2-dr MINI Cooper. Love it so far. Questions: I just picked a prefix but honestly, I don't know what it means. I think my 2018 is a 3rd gen, but if I'm wrong, please ignore the stupid new owner error. Also, what do the "R" designations mean (R53, R58, etc)? And I just found out that the salesperson was wrong ... I am NOT driving on run-flats. Is that a problem (in anyone's opinion)? Looking forward to learning a lot about my MINI here. Cheers!