Rear tire dragging on rim brake arm Just bought a used bike- it's great, but needed new brake pads. Got new brake pads and now the tire is rubbing on the brake arm. I do not understand! The front brake is with new brake pads is the same make/model and is amazing in every way. Is there a solution to thin? Is there something about brakes I don't know??? The tire is 700c x 25mm

2005 Trek 1500 WSD
It looks like your new brake pads have pushed the right brake arm out moving the top of the arm down, touching the tire. You need the top of the brake arm to move up and give you some clearance.  

Options


Get thinner brake pads
Cut the new brake pad down some so that it will be thinner
If there are any washers between the back of the brake pad and the brake arm remove them (I can't tell from the picture)


Hopefully all you need to do is remove some washers.