Yes if you buy a used car know the history and look at receipts or you may be in for some fixes.
If you buy your car from a non enthusiast you're looking for trouble at 150K plus miles. If you buy from an enthusiast you likely won't need nearly as much. Enthusiast keep records and receipts. I gave the next owner of my baby a folder of receipts as well as the original window sticker.
OE CSL WHEELS - OE CSL BRAKES - OE AUTOFLD MIRRORS - CSL RACK - CSL TRUNK - CSL DIFFUSER - AA TUNE - AA PULLEYS - AS 40% SSK - BILSTEIN PSS9s
CF CSL LIP - NAV- BMWP CF STRUT BAR - BMW GROUP N MNTS - GRUPPE M CF INTAKE - SUPERSPRINT - UUC S/S LINES, RTABs - H&R SWAYS - 4.10 M-SPORT DIFF