On my 2003 3.0, I used Axxis Deluxe Advanced. I prefer them over the Axxis Ultimates. Used the same pads on the 535 from new. I would buy them again. I used the same pads for years prior to the X5, under the Repco/PBR name.

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2007 X3 3.0si, 6 MT, Premium, White

Retired:
2008 535i, 6 MT, M Sport, Premium, Space Grey
2003 X5 3.0 Steptronic, Premium, Titanium Silver
2002 325xi 5 MT, Steel Grey
2004 Z4 3.0 Premium, Sport, SMG, Maldives Blue