I think because shorter bump stops used,on oem bumpstops they are used as a secondary to help low spring rates.Yes crashy but as designed on BMW using very short dampers at front.eg My s2000 has 10k front and rear

bumpstops do not engage like BMWs .
Was looking at coilovers tbh but as car is a work horse =£s and meister are a 12 week wait atm.
