I'm running 6smd festoons in the footwell and lower door panels and I believe they are 36mm.

Check your housing to be sure they will work for you I may have stretched the contacts in my housing to fit the 36mm but no harm was done to the connector

20X White 36MM 5050 6SMD Festoon LED Dome Map Interior Lights DE3423 6418 12V | eBay



Here is an SMD spec guide to see what wattage and lumen ratings the various SMDs have

https://en.wikipedia.org/wiki/SMD_LED_Module

Mike

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Mike
Dallas, TX & Appleton, WI
2003 E53 4.4i Pearl Beige
2003 E46 330Xi Monaco Blue
2007 E90 335Xi Black Sapphire Metallic
2011 F25 X3 28i Black Sapphire Metallic