Brakes or Tires Issue?

I have 25,000 km on my TB that I bought 5 weeks ago and when I put the breaks on I get a wobble from the back end. The service advisor thinks it could be tires, I think its the rotors. Anyone else get the same type of problem with such low mileage?

I'm lucky I bought it from a good dealer since they are about 45 minutes away from my home and they had made arrangement to give me a loaner car for the night.

Sounds like rotors to me. The reear rotors have been well documented as being a problem area on here and various other forums.

Sounds like rotors to me. The reear rotors have been well documented as being a problem area on here and various other forums.

Might also be the balance of one of the tires... have them checked! You might have thrown a weight causing the tire to shimmy

The TB is in the shop, I'm driving a Caviliar. I'm lucky I'm getting great service where I bought this TB.

Yep, rotors. Brakes nice now.