You can install them. There was a lot more reason to do so with early RFT models, 5+ years ago. Modern RFTs give up far less to non-RFTs in my opinion.

You won't be able to carry a spare, so you will likely want an air compressor and tire sealant as a temporary fix to get to a tire shop if you do get a flat.

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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