I haven't even looked at the link or pics but I am sure no manufacturer will make wheels for BMW and then sell them on the side without the BMW stamp for less! They would get sued for everything they're worth.

Replica wheels often look like the real thing to the untrained eye, but if you put the two side by side there are always subtle differences...that's the only way they can get around the patent! Another way to check is usually the weight. The replicas are almost always about 6-8 lbs heavier; and that's quite a difference when you factor in all four wheels...

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2008 X5 4.8i - Jet Black / Black Nevada Leather / Specs: Every possible factory option