I have bought tires and had them mounted and balanced. Looking back on it, I should have just bought the complete rim packages and made the swap myself. I sold my old snows on eBay for about 1/4 the original cost in 3 years (not bad). You can always sell your setup when the car goes back. There might be some deals come this summer as people get out of their leases and want to sell some rims. The classifieds at BF & RF have some good stuff from time to time.

__________________
-----

-'13 E93 M3 Cab, Interlagos Blue, Carbon Black leather, DCT, all options, and fun, endless fun!
-'13 X5 35i M-Sport, Carbon Black & Cinnamon, Dinan Stage 2!
-'15 Toyota Sienna Limited Premium AWD, Silver & Grey, Nav & BluRay, and less lame than the 2011 it replaced
-'07 Mini Cab S, Laser Blue, 6sp, endless fun that ended (sold)
-'04 X5 4.4i, loaded, loved, modded and sold