Flat tire?

 I just had a member come up to me that rides his bike here each day.  He asked if I had a pump.  Of course.  

He explained he just put a new tube in and didn't understand why it kept going flat.

I explained to him that sometimes the culprit is inside of the rim of the tire.  You have to clean out the inside of the tire itself, or the trigger for flat will cause it again.

Replace the tube as many times as you want, but the abrasive thing that causes the next flat will be there until you clean "that" out.

Love you all