Get the right fit (Adults)

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The guide to adult bike sizes and fit

When it comes to the most enjoyable bicycle ride, the fit of your bike is important.

Bikes come in different sizes just like clothes and finding a bike that fits you is important. The correct bike fit makes your ride feel more comfortable and enjoyable.There are two great ways to help figure out if a bicycle fits you the way it should: Casual Bike Rider Fit and Customized Bike Fit.

Casual bike rider fit

The casual bike adult rider sizing/fit method is good for riders who are looking to start biking at an entry level and are most likely going to buy their bicycle through a large retailer that doesn’t carry one bicycle model in several different frame sizes. 

Most adult bikes you will find at your local Schwinn retailer have 26″, 27.5″, 29″, or 700c wheels, but this is not always indicative of what size bicycle is right for you because bike frame sizes vary. To find which frame is best suited for you it is important to size up the bicycle to your inseam (the same inseam that you find in your jeans). If you plan on riding your bike for casual or recreational purposes this guide is a great way to see if a bike fits you right. 

Measuring your Schwinn bike fit

  1. Stand flat-footed on the floor.
  2. Swing one leg over the top tube of the frame and straddle the bike.
  3. Look for a 1” clearance between your inseam and the top tube of the frame if the frame is straight across.
  4. If the bicycle is a step-thru frame you will have to judge based on how the reach to the handlebars feels to you after your seat is adjusted to the right height in the next steps.

The second step is to set your saddle to the correct height; have an employee at the shop or a friend hold the handlebars, so you don’t tip over. Then:

  1. Place your heels onto the pedals, this will feel strange but it’s for sizing purposes only.
  2. Slowly pedal backwards.
  3. Your knees should just barely be bent at the bottom of the pedal stroke, if your knees are fully locked out, then the seat is too high, if your knees are very bent, the seat is too low.
  4. Once the seat is set to the right position reach out to the handlebars and make sure that it feels comfortable to you. If you feel like you a reaching to far, this bicycle frame is most likely to big for you. If you feel squished, the frame is too small.

Things to remember during your bike search

  1. Wear the same shoes you would wear while riding your bike
  2. Have some idea about where you’ll use the bike (neighborhood, trails, off-road, etc.)
  3. Have someone come along to check out how each bike fits

Customized bike fitting

The customized bike fitting method is more appropriate for those adults who plan on riding their bike more frequently, investing more money, and who want to buy a bike frame based on their body measurements.

Maybe you want to dabble in something a bit more intense; you want to do a century ride or are thinking about entering a race. Maybe the doctor is prescribing bike rides to lower your blood pressure or reduce the waistline. In these cases, you and your Schwinn will be spending a lot of time together and you should spend some time to get serious about being fit to your bike.

While Schwinn recommends that you use the chart above for the majority of our bicycles, the key in this case is to have your local bike shop help you figure out what size you are and fit you professionally. This is critical for comfortable riding. Back pain, knee pain, shoulder pain and neck pain are NOT a normal part of riding a bike, but rather a sign that the bike you are riding doesn’t fit correctly or isn’t set up correctly. A bike that is too large or too small can also be difficult to control. Your ideal frame size is based on two body measurements: inseam and torso length. Torso length determines the “reach” of the frame (how long it is) while inseam determines seat-tube length. Your local bike shop can help you figure out these two measurements and how to find the frame size that fits you, but in general, bikes get longer as they get larger.

  • Measure your height
  • Measure your inseam
  • Measure your reach and optimal riding angles

When your Schwinn bike is adjusted correctly, you’ll have a saddle height that leaves a slight bend in the knee when your foot is at the bottom of the pedal stroke and a reach that leaves a slight bend at your elbows when you are gripping the handlebars. (That slight bend in your elbows forms a shock absorber for your upper body). Your local bike shop should be able to perform a standard sizing, or an advanced bike fit should you request it. 

What if I got my bike size wrong?

If you are riding a bicycle that is just a bit too small or too large, don’t worry, you can still get a proper fit by making a few small adjustments:

  • Move your bike saddle forward or back to adjust your hip position when sitting down.
  • Buy a longer or shorter stem to adjust the reach to your handlebars, or the angle at which your handlebars sit.
  • Buy a different bicycle seat post: you can adjust the height with a longer, or shorter seat post. They also make posts with different amounts of offset forward and back to help adjust your position on the bike.
  • Give it time. Sometimes a new bike or position (due to frame geometry) can take some time to get used to.