Originally Posted by squirrel_hunter

It’s all about practice and being used to the feeling of lean and things touching down. If you wish to make good progress you will lean the bike more and more and eventually you will get into the position whereby your knee touches down if you are hanging off in the correct way. It is far better that something ‘soft’ touches the ground such as your knee before something ‘hard’ such as pegs, and thus you use the knee to gauge lean angle which is perfectly valid on the road.

If you are getting to the lean angles that you may be close to touching down it is better to then practice with the aim of doing it as it is slightly less surprising if you are expecting it then if you are not.