I've ridden my CF roadbike over curbs and have bunnyhopped it over potholes. I've hit some potholes at high speed too. Also, I occassionally ride it on gravel trails that I use as shortcuts to get back home. It's good to have very solid wheels with strong rims. I'm running Mavic Ksyrium SSCs with 700x23C Continental GP3000 @ 130PSI. In the four years I've had the bike, I've bent a spoke once but I'm not even sure when and how that happened. And after I discovered the bent spoke, I checked the wheel which was still true and round. I even rode on that bent spoke for another 500 miles while awaiting the replacements (I ordered extra spares) to get shipped. The only time I had to retrue the wheel was after I replaced that spoke and even then it wasn't really a retruing... just a tensioning. While it's not advisable to continuously offroad a roadbike, it can be done from time to time for short distances without a problem.