I just turned 52K on my Nissan and have started to think about new tires. The current tires are the OE Continental ContiProContact 94T 540 A A and despite not getting very good ratings in TireRack's survey, I've always been happy with them. The tread is still pretty good. I'm not yet down to the wear indicators but may decide that they've served their useful life and get new ones before winter and not take any chances.
The question is, what do I get? Size is P215/60R16. Cost generally isn't a concern. I'm comfortable and able to pay whatever it costs to put on the best. Tires are important. With that said, I do like a good deal and good value and don't want to pay a premium without getting something in return. My list currently consists of the following:
Michelin Primacy MXV4
Goodyear Assurance ComforTred Touring
General Altimax HP
Bridgestone Turanza Serenity
Michelin Pilot Exalto A/S