UPDATED SEPTEMBER 2023
We have also seen customers place additional pipe insulation or a cut section of a pool noodle between the tire and the fender. This will help maintain the shape of the fender and prevent it from rubbing against the tire.
It is possible (and easy) to lower the tire spool along the arm. Doing so changes the contact point on the tire and often results in it sitting lower than or tucked under the fender. Lowering the tire spool will change the angle of the arm, so be sure to check that it is still around the optimal 45 degrees.
Additionally, we recommend using the Wheel Strap accessory as another contact point. These are helpful for bikes with fenders that hang below the optimal 45 degrees