This mod increases resolution and detail of all vehicle interiors in GTA IV.
Using V HQ Vehicle interiors by jacell (gtainside.com/en/gta4/cars/134316-v-hq-vehicle-interiors-for-iv) is highly recommended, the HQ Vehicle interiors mod is also included in the archive. Textures from HQ Vehicle interiors are better, my part of this mod was inspired by it.
This pack works perfectly with the First Person mod
Reworked vehicle_generic_interior and vehicle_generic_truck_interior textures are taken from Optionals files for iCEnhancer 3.0 Natural, I just upscaled them even more

Installation:
Run OpenIV
Open \pc\models\cdimages\vehicles.img
Enable edit mode
Open every .wtd file (those are texture dictionaries) and look for textures having the word "interior" in their names
Once you've found one, select it and click Replace
Then just find a .dds texture with the exact same name in the mod files and replace an older texture with the modded one
V HQ Vehicle interiors files and my files are in separate folders, make sure you install both mods to change all the interiors
NB: Some texture can be found in several .wtd files, that means replacing some texture once won't make it appear on all cars that use it. You'll have to look through every file and replace textures manually. It takes some time though, but the result is definitely worth it

ALWAYS MAKE BACKUPS

Credits:
To jacell for the V HQ Vehicle interiors mod. This one changes only some interiors (but with way better quality than mine), it inspired me to make this mod pack
To DayL and other creators of ICEnhancer 3.0 ENB for the HD Vehicle Textures mod where vehicle_generic_interior and vehicle_generic_truck_interior textures were taken from and then upscaled