Noticed some steering vibration at 80-90 km/h so I decided to get my tires rebalanced at Costco, free of charge. Tires are 5 year old Michelin AS3's with about 80km on them (5/32 left). Nice and smooth now. Will likely get new tires in the spring, probably the same Michelins (I think they're AS3+ now) since I'm very happy with them.