Just have got 1 for my Spektrum DX3R. The wheel is good but the adaptor is not 100% compatible with the transmitter. The original wheel has 2 notches which limit it to be turned by a maximum of 180 deg. However, the adaptor's notches allow the Yeah Racing wheel to be turned by more than 180 deg. It might have been a good idea to some racers who want a finer control of the steering but unfortunately the potentiameter inside the transmitter does not have that much travel. You will get a dead band at both ends of the steering channel!
I've done a little fix by affixing a small piece of plastic at each of the notches with CA glue to limit the travel approximately back to the original wheel's. I think this is a stupid mistake committed by Yeah Racing.