Rumbling Noise

My TF has developed a rumbling noise when braking fairly hard. It doesn't pull any more or less than it has done for ages, the handling feels exactly the same. Is it more likely to be brakes or bearings? Or somethign entirely different? I haven't checked it yet, but will try and get it jacked up and looked at over the next couple of days.



I can't hear the noise at all when driving, only when braking, and I can't feel it through the pedals at all.

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