How to choose the right size toothbrushes (without buying the wrong size)

1) Why does the right size matter so much?

If you buy more than you should:

• It can hit pillar A or the frame.

• You can touch the other brush.

• It can make noise and vibrate.

If you buy smaller:

• There's an area left uncleaned.

• visibility worsens in the rain (especially at night)

2) Different measurements left/right: this is normal

It's common for each side to be a different length; therefore, "an identical pair" doesn't always work.

3) The most reliable way to confirm

• Consult the car's manual / references suggested by the manufacturer.

• Use a configurator per car (when available), but always confirm the fit.

4) Fit is just as important as size.

Many product guides explain that you need to match the brush type + size + fit .

5) "Perfect purchase" checklist

• Front: driver's side (size)

• Front: passenger side (size)

• rear (if present)

• type of fitting

• You choose conventional/flat/hybrid depending on your use (city/highway/winter).