I looked at their website and the specs match the wheels I have on the CC. I have no idea why it cracked but we did have a problem with a Nev-R-Lube bearing last year. Maybe it got stressed andtook a while to show up. Also had new tires (Carlisle ST235/85R16) put on 2 years ago and could have been stressed then.
Jerry and Irene
2015 Chevy High Country 3500 CC/LB D/A -- 2009 Cedar Creek 34 TSA
2012 - nights camped - 153; miles on CC - 14779
2013 - nights camped - 88; miles on CC - 9066
2014 - nights camped - 57; miles on CC - 5263
2015 - nights camped - 95; miles on CC - 11179