2021 BMW X5 M Bulb Size

tl;dr: this bulb size chart lists the correct lamp types for a 2021 BMW X5, year-by-year replacements, and socket details to simplify buying. I recommend matching both bulb type and wattage, and checking fit before installation. Correct sizing ensures proper beam pattern, longevity, and avoids dashboard errors. Risks include incorrect fit, premature failure, or CAN-bus warnings if you bypass electronics. Next steps: use the chart to pick the OEM-equivalent size, verify with your vehicle manual, and follow a simple installation checklist. Note: some links are affiliate, which means I may earn a small commission at no extra cost to you. This helps me maintain the chart and keep recommendations current.