Let me tell you something to save you some misery. I replaced the original Continental tires at 58K with the P215/65R15 95T Michelin HydroEdge. These are the most awesome tires in ANY amount of rain that I have ever had. They are also the most annoying, maddening, noisy tires I have ever had when it comes to interior noise in this van. I spend 8-10 hours a day at highway speeds in this thing and the roar roar roar is driving me MAD! Sounds like a bad wheel bearing, which I thought it was initially. It went to the dealership twice with no improvement. Two rear wheel bearings, which made no difference (and that I questioned the necessity for, especially after I requested the old parts that they didn't save for me) at a cost of over $375 EACH plus labor changed nothing. DO NOT put these tires on your TC. I have 97K on the van now and the tires show minimal wear so I'm buying some foam insulation in the can and filling every cavity I can find. The $900 poly-liner kit may help but that's a ridiculous price for what little there is to it. Hope that this helps someone else is all I can say.
Get a Four Wheel alignment, and the tires will quiet down. Get an alignment shop that will "Zero" in the alignment, not just get it into spec. range. Also are your tires rotating in the right direction??
It's had 2 four wheel alignments at the Ford dealership for what that's worth. Yeah ....... tires are operating in the correct direction. Going somewhere else next week for servicing and I'll see what their alignment shows. I'll be reporting back.