Tingarden

Hi, i'm new to briskoda, and I know this is a slightly old topic, but have just noticed saw toothing present on MY14 Elegance Est which has covered 15000 miles. It seems to be present on both the inner and out edge of all 4 wheels! I've been to the dealer and all they've suggested is a 4 wheel alignment (apparently they don't have the capability themselves!), so i'm going to take it to my local tyre shop that i've been using regularly for the past 6/7 year. However my understanding is that the rear suspension is not adjustable on versions other than the 4x4 or VRs, therefore what can be done to fix this? Has anyone else experienced this problem on all 4 wheels and on both innner and out edges? Its running on Michelin Primacy rubber.