Couple days ago I thought making a 5.5m U turn on my GT250R with 27 degrees wheeling angle is impossiable. But....But....Tonight I make it by using a different skills. Yes lean the bike...But...instead of saty upright/lean to the left to balance the bike I lean to the right and just let myself go with the bikethen and slightly release the rear break allowing it to speed up. The initial speed is really important. Start the U turn at high speed(about 18 Km/h) then I found the bike really easy to control and woun't worry about drop it any more. This skill might not useful for others whose bike have a bigger wheeling angle. However, it is a great thing for me to find out that not only I can do it but my bike can do it and it isn't a "drama" like other people said. I'll try to upload a video latter.