How to Measure Your Car Door Edge
Measuring takes two minutes and prevents buying the wrong guard: measure the door lip thickness and the door edge length. With those two numbers you can pick the correct U-channel size and kit length.
Thickness first
Use a ruler on the bare metal lip; most cars fall between 1.5mm and 5mm.
Then length
Measure along the curved edge of one door, then multiply by the door count.
Frequently Asked Questions
What if between sizes?
Choose the larger U-channel; a loose guard slips off.
Need special tools?
No, a ruler and a piece of string work.
Do all doors match?
Front and rear usually differ; measure both.