I know early 911s don't even have these in place (as well as most other vehicles), but wondering if anyone has had real life experience of long term use without these.
One of my kid's vehicles (2011 Audi Q5) is missing all of the underbody covers and also requires two new fender liners. Parts are cheap for all ($105), but the freight within the US is $275
). To this add international freight (at least as much as US freight) and you are looking into quite a few hundred dollars. This is MUCH better than buying local where one of the pieces can easily cost $600+, but I wonder if this is really more for sound insulation (not an issue) or aerodynamics (not an issue due to the relatively short distances at reduced speed).
We do get TONS of rainfall here... No such thing as salt on the roads. So, any real life experience you want to share?