My DH and I both got Madones this year. Our original hitch rack (http://www.amazon.com/Swagman-Cross-...3145589&sr=1-1) worked great for our non-carbon bikes. Our LBS said most racks would be fine. The exception was the type we had that put alot of pressure on the top tube. He recommended the Saris Cycle On Pro (http://www.amazon.com/SARIS-CYCLE-HI.../dp/B001KURQOM). It is pricey and heavy but works like a charm. If it is just me going for a ride, the Madone goes in the back of the Enclave.
P2
2018 Trek Silque SLR6 - Selle SMP Glider
2018 Specialized Dolce EVO Comp - Selle SMP Glider
2011 Trek Madone 5.2 WSD -Selle SMP Glider
2013 Giant TCX W - Oura 143