I bought one of these and could not get my bike up on the dolly. I read a review of the dolly from another R1200RT user on another forum and he said the casters had to be unlocked when putting the bike up on it. I don't recall precisely but I might have locked them when I used it. If so, that would account for me not being able to correctly use it. I did not use a 1x4 under the rear tire as I have read either. If anyone has experience with this dolly, I would like to hear their experience with it. I like this dolly because it has an 1100 lb load capacity.