How to Measure the Circumference of a Sailboat Steering Wheel

If you are ordering a custom cover for your sailboat steering wheel, the most important step is measuring it correctly.

Many customers make the mistake of measuring the diameter with a ruler and sending that number in. Unfortunately, that often leads to an inaccurate size, because diameter and circumference are not the same thing.

To get the best fit for a custom steering wheel cover, you should measure the circumference, not just the diameter.

Use a soft measuring tape

When measuring a sailboat steering wheel, always use a soft measuring tape.

A soft tape can wrap around the outer edge of the wheel and follow its true shape. This gives a much more accurate result than using a straight ruler or trying to estimate the size by eye.

Measure the outer circumference

To measure the steering wheel correctly, wrap the soft measuring tape all the way around the outside of the wheel.

Make sure that:

• The tape follows the outer edge closely
• The tape is not twisted
• It is not pulled too tight
• It is not left too loose

This number is the circumference of the steering wheel, and it is the measurement needed for custom sizing.

Do not measure diameter with a ruler

This is the most common mistake.

Please do not use a straight ruler to measure the diameter of the wheel and assume that is enough.

Even though the wheel is round, the diameter is only a straight-line measurement from one side to the other. The circumference is the full distance all the way around the wheel.

These two numbers are very different.

If you only measure the diameter, the final size may not be accurate enough for a custom product. Small differences can lead to a cover that is too loose or too tight.

Why circumference is more accurate

For a circular object like a sailboat steering wheel, circumference is the more useful measurement for a custom cover because it reflects the full outside dimension of the wheel.

In real use, steering wheels may also have:

• Slight shape differences
• Grip wrapping
• Surface thickness
• Irregular edges or fittings

These details can make ruler measurements less reliable. A soft measuring tape gives a more practical and accurate result.

Additional tips for measuring

To make sure your measurement is as accurate as possible, please keep these tips in mind:

• Measure at least twice
• Use a flexible soft tape, not a hard ruler
• Measure the actual outer edge of the wheel
• Send the unit clearly, such as cm or inches
• If the wheel has any unusual shape or accessories, include a photo

A photo is always helpful, especially if the steering wheel has a non-standard design.

Final reminder

If you want to order a custom sailboat steering wheel cover, please send:

• The circumference of the wheel
• A photo if possible
• The unit of measurement

And again, do not send only the diameter measured by a ruler, because diameter and circumference are very different and that method is not accurate enough for custom sizing.

Using the correct circumference measurement will help ensure a better fit and a better finished cover.