Originally Posted by
roothopper
I have a bike that has 27.5 tubes and after like 5 weeks the tire deflated fully. This also happened to my 26 inch tubes and they are brand new ones. The 27.5 and the 26 front tire deflated only. Not both or rear.
So I added air to them and they were back to normal.. any help to what caused this?
5 weeks? I check and top off my tires before every ride! Re inflate your tires and see if they hold air. Check them every couple of days. If it goes completely flat after a couple of days, you have a puncture or defective tube. If it is down by, say, 10 or 20%, that is normal and you just need to top them off.