I did also take that tire one year warranty wasnt much and sounded decent...but the other stuff I really wasn't sure.
When I asked him what really was covered by the undercoating and he said it would be a sound dampener; I was like it's a roadster- no roof I will have road noice anyways, Then he said well when you have to roof up and windows up it would be quieter....I said it will be parked if I need the roof up...he then changed the topic