Why do I have bike saddle wear on one side?

Illustration of bike saddle with wear on one side

Hi BikeFit,

I’ve noticed that my bike saddle is worn only on one side. I found some information on web talking about a leg length issue or how I sit on the saddle being the source of the problem. What do you think?


Hi Gene,

We’ve received this question from numerous riders and would be happy to shed some light on the situation. In regards to what you found on the web, finding a saddle is extremely important and a difficult part of achieving cycling comfort, but we’ve seen uneven wear on a variety of saddle types. It’s possible for a rider to favor one side over the other and unfortunately they’ve potentially acclimated to an off-center position. This is where we strongly recommend that you visit with a professional bike fitter or BikeFit Pro in order to analyze your riding style and get a full bike fitting.

Are your legs different lengths?

Regarding the potential leg length discrepancy, this could also be the culprit. If you visited a professional fitter, they would hopefully ask the following questions to pinpoint if a leg length issue is an origin of the saddle wear.

  1. Do you have an x-ray or medical information diagnosing a leg length difference (considered by many as the Gold Standard, the STANDING AP Scanogram Full-Length X-ray used by clinicians is the most accurate way to diagnose a Leg Length issue)?Anatomical drawing highlighting pelvic area
  2. Have you been told you have a leg length issue?
  3. Do you get saddle sores, but only on one side?
  4. Does the saddle show uneven wear (your original question) or even tilt lower to one side?
  5. Does one knee have more bend than the other when pedaling?
  6. Do you rock lower to one side than the other when pedaling (viewed from the rear)?
  7. Do you sit off-center or side-saddle?
  8. Is it obvious or observable (perhaps others have mentioned something to you)?
  9. Do you have lower back pain or discomfort on one side?

Even with all these questions from a fitter, we would recommend that a medical professional would be the best person to diagnose you with a leg length discrepancy. If that is the diagnosis, leg length shims could be a possible remedy. We do not recommend cleat stagger if you are looking for a quick fix.

Often, the problem starts with the foot/pedal interface

We’ve noticed that many riders are misaligned due to the inherent tilt in their feet. Using a Cleat Wedge can help align the foot in its connection to the pedal and improve the alignment of the kinetic chain up the leg, through the knee, and up to the pelvis.

The image below displays the knee collapsing inward as the foot is forced flat to meet the pedal.  This knee collapse causes the leg to push inward, which then rubs excessively against the saddle.  You likely also noticed that your cycling shorts may show significant wear on one side vs. the other.

Anatomical illustration of a leg that is not properly aligned
The next image shows how cleat wedges improve alignment and in turn, reduce saddle wear on one side. The reason it likely only occurs on one side is due to the asymmetric human body. Most cyclists discover that one foot may need wedges, leg length shims or pedal spacers and the other may not. There are also other great benefits to using cleat wedges when riding.
Anatomical illustration of a leg that is properly aligned

Thank you for the excellent question.  Feel free to reach out to us with more.

-The BikeFit Team


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