From the retailer's perspective - how else do you find the people in the store who are wanting to buy? If one is a tyre kicker, then finding out in a polite way is the only sensible process? Sure - we all hate pushy salespeople, but that's because they're lacking the empathy to realise they overstepped the mark. It's not what you say, but how you say it. I often used to size people up, especially couples, and try to make passing comments. I'd open a fridge freezer close to where a couple were talking, and start to clean an imaginary sticky mark from inside with a duster, and say in a stage whisper to the man, loud enough for the lady to hear - "if my wife knew I did this at work, my life would be hell at home..." There would be a knowing smile from the man, and a tut from the lady. Sometimes you'd get a comment from her back, telling you off - but that's the icebreaker done, and you can just chat. The obvious tyre kicker can't object to a comment when you pass on the way to somewhere else "There's a nice blue one of these over there...". Most tyre kickers just nod. The ones who reply is another chance for an in.