Picked up my S yesterday and got windows tinted. I noticed that the rear wheel wells are lined with felt material, like that found lining a trunk. What happened to good ol hard durable plastic. I just don't see this felt holding up to any sort of driving conditions. At first I thought that the factory forgot to install the plastic linging like that found in the front wheel wells. I called dealer and they checked their inventory. All cars had the felt. What is your opinion? Ordering deck spoiler from Stillen.