2020 BMW X3 M Bulb Size

Misconception: you might think a bulb size chart is overkill for a 2020 BMW X3 M, since shops can just swap what looks right. It seems true because many bulbs share similar shapes and sockets, so a visual match often appears to work. What is true is more practical: the chart lists exact sizes, socket types, and common replacements specific to your X3 M, so you avoid buying the wrong part or an incompatible LED. Think of it as a mental model and rule of thumb for accuracy and faster installs. Implications: using the list saves time, prevents wiring headaches, and helps pick the brightness and color you prefer. Quick tests: compare the chart code to the bulb stamped code and test fit before wiring. Quick recap: some links are affiliate; I may earn a small commission at no extra cost to you.