Yeah my car mechanic told me that some cars/manufacturers have exactly this design flaw where the end of the broken spring slides out and pierces the tire. He mentioned that also BMWs do this. I previously had a VW Golf and had broken springs like 4 times (used to drive a lot on unpaved country and forest roads for work) which luckily doesn’t do this. The rest of the spring stays in and sometimes we only noticed a spring was broken again during inspection. Sometimes I heard the broken part rattle while driving on uneven terrain.