After 2 months of using a trailer Tiggo 16 '' (6 trips, less than 50 km, without excess weight), I noticed that a wheel bearing had opened: I saw the ball in their fat . One Wednesday evening, I wrote by Amazon.com that I bought the trailer and asked them what I should do. The next morning, Amazon.com warned me that my message had been sent to Tiggo GmbH in Germany and, in the process, Tiggo sent me an email apologizing and telling me a complete wheel sent immediately. The complete wheel arrived on Monday afternoon. Tiggo me his word, without asking me to return their defective tire or even a photograph. The new wheel was sent to me for free. Hat Tiggo GmbH! and thank you.