Install M5

https://pl.gta5-mods.com/vehicles/bmw-m5-f10-2012-add-on-tunable-autovista
ranstar74 & 5dmc1

1. Extract rar files.

2. Copy M5 folder to \mods\update\x64\dlcpacks\

3. After go to \mods\update\update.rpf\common\data

edit dlclist.xml

add:

<item>dlcpacks:\m5\</item>

edit extratitleupdatedata.meta

add:

<Item type="SExtraTitleUpdateMount">
			<deviceName>dlcM5:/</deviceName>
			<path>update:/dlc_patch/m5/</path>
		</Item>

Save and test.