Aubrey's running 20" XD Spy wheels on his 2010 Chevy Silverado 1500 Z71. Not to much to add - his comments below speak for themselves. The wheels really make a difference! 
---------- Forwarded message ---------- From: Aubrey Tod*** <aubtod***> Date: Tue, Jun 28, 2011 at 5:59 PM Subject: Truck on xd spys To:  The wheels really made the truck (2010 Z71 4x4) stand out. I ended up putting street tires (275-55-20 Goodyear eagles) on the truck over murders for a low pro look. Really love the look of it now though. The wheels really made the difference. Thanks again!
XD Spy Rims XD797 Wheels