19's all the way around. My wife noticed a noise in the front after Discount Tire rotated them. This caused me to take a closer look at the tires and saw the chunking. There is also an issue with the front left tire where there is an anomoly on the inside of the tread. It's not a knot but more like a 12 to 18 inch section where the tread bulges.

Definitely a trip to Discount tire today! And likely a premature set of new tires. I hope that they give me some warranty assistance on the old defective tires.

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2007 X5 4.8