Mine drone but then everything about my car is noisy so....meh.
For grip vs price they are awesome and I plan on fitting another set of 235/40/18's (my car is 90% daily driven with a bit of track work) when the current set need replacing.
So far done 20,000kms on mine and wear-wise they dont look too bad at all. This is with multiple perth-wrx cruises, skidpans & tuning arvo's @ RAC over the last year.
Though I do drive like a granny everywhere but the track (the odd-squirt here and there occasionally).