So, I have been riding a whole lot lately. Saturday, me and the ole lady went for a long ride, about 150 miles. Tonight, on my way home from work, my bike seemed to be riding a little squirrely. I looked at the tire when I got home, and the front is showing a very tiny bit of cupping or scalloping. So I decided to check the tire pressure, not thinking it would be off since I just checked it two weeks ago. The rear was at 35, so I added a pound or so, but the front was what shocked me. 10 PSI!!!! I thought holy crap! I am going to check it every single time I ride. Would the change in temps cause that much of a loss of air pressure? Or do you think I may have a hole in my tube? I'm gonna keep an eye on it, and if necessary take the wheel off to get a new tube. Do you think the tire is alright, will it wear back even? Or is that shot as well?

 

Once a tire wears in a certain pattern there's no stopping it.

 

Yeah you need to check your air pressure more often. I check mine once a week and it's usually good, but sometimes they need a pound or two. Think about the pounding tires take with the way roads are theses days. And yeah the tire that has the cupping is pretty much going to stay that way.

 

+1 to what they said. If you had a hole in your tube, the tire would be flat. A valve core that needs to be snugged up could cause a slow leak though.