copy miura folder to
x:\Grand Theft Auto V\update\x64\dlcpacks

Use OpenIV
1. go to :
x:\update\update.rpf\dlc_patch
2. create a folder named "miura"
3. extract content.xml to the miura folder

how to replace tyre texture(optional)
Use OpenIV
1. go to : 
x:\update\x64\dlcpacks\miura\dlc.rpf\x64\levels\gta5\vehicles\miuravehicles.rpf
2. activate edit mode open miura.ytd file
3. replace TireDiff and TireDirty with the file from my rar