 In April 2011, during a training ride, he avoided a collision with a car, from that moment onwards he had a bit of oak installed into his bike frame and thus could avoid accidents by touching wood.Bikes were sold with oak to raise money for the Plant for the Planet charity.On 15 August 2013, the United States Anti-Doping Agency (USADA) announced that Klier would be suspended for six months after admitting to doping during the period of 1999 to 2006.