How to Determine Your Bike Tire Size: A Quick Guide
- wrobbieh6
- Oct 9, 2024
- 2 min read
If you're looking to purchase Flex Guiders for your child's bike, it's essential to know the correct tire size to ensure the perfect fit. Here's a simple guide to help you figure out the right size for your bike's tires.
Step 1: Locate the Tire Size on the Sidewall
The easiest way to determine your bike's tire size is by checking the sidewall of the tire. Most bike tires have the size printed right on the sidewall in a standard format, which is easy to identify. The format will look something like this: 700 x 25 or 14 x 1.75.

Step 2: Understand the Format
Bike tire sizes are generally presented as two numbers separated by an "x."
First number: This represents the diameter of the tire, measured in millimeters (for road bikes) or inches (for kids' and mountain bikes).
Second number: This indicates the width of the tire.
For example:
A tire labeled 700 x 25 has a diameter of 700mm and a width of 25mm.
A tire labeled 14 x 1.75 means the tire has a diameter of 14 inches and a width of 1.75 inches.

Step 3: Measure the Tire (Optional)
If the tire size isn't legible or you're unsure, you can measure the tire's diameter from one edge to the other across the wheel to get an approximate size.
Tire Sizes and Flex Guiders
At Flex Guiders, we currently offer our patent-pending adjustable training wheels for bikes with 14-inch tires. However, if your child has a bike with 12-inch or 16-inch tires, you're in luck! We're offering pre-orders for these sizes, so you can reserve your set of Flex Guiders before they hit the market.

Why It's Important to Know Your Tire Size
Choosing the correct tire size is critical for ensuring that the training wheels fit properly and provide optimal support. Incorrect sizes could result in an unstable ride, making it harder for your child to balance and pedal.
By simply checking the tire sidewall or measuring, you can confidently select the right size and give your child the best learning experience on two wheels.
Whether you need Flex Guiders now for your 14" tire bike or want to pre-order for 12" or 16" sizes, we're here to support your child's journey to balance and biking confidence!
Feel free to check out our product page for more details on sizes and availability.
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