well it all depends on how heavy you are, how heavy your bike is, what tyres you have, and what riding your doing?? i have mine so there just soft and bouncy but like dont fold when im turning corners or whatver i dunno there just 'right', just experiment let a little bit out at a time mine are at about 20 ish but unless your the same wieght as me and have the same bike (wich you dont) then thats pretty useless, hope i'v helped a bit.