This one is not so hard like it sounds. Go to fastmode > timerace and choose Milano curcuit. Than choose the full curcuit with the long straight parts. Choose the Bimota Tesi 3D and go to race options and activate wheelie controll to full, shift to manual. When you are at the track, drive to the long straight part with the second gear and make a wheelie by holding the left stick down. So now you can give normal throttle and you should now make really long and easy wheelies. So good luck and sorry for my terrible english.