This mod increases the resolution and detail of body textures for the so-called “beaters” (or “bangers”, rusty cars, wrecks, whatever) in GTA IV. Now these textures are increased 4 times. There are 3 "beaters" in the game: "Emperor Rusty", "Saber Rusty" and "Vigero Rusty". Since beaters are pretty much the only cars in the game with noticeable body textures, I don't think these cars will stand out much from other cars without increased textures. Therefore, replacing some textures won't hurt :D
Installation:
Launch OpenIV;
Open pcmodelscdimagesvehicles.img;
Turn on editing mode;
Find emperor2.wtd, sabre2.wtd and vigero2.wtd;
Open each wtd file, look for textures named [car name]sign_1 and [car name] sign_2, such as emperor2_sign_1.dds or vigero2_sign_2.dds depending on which car you're looking at;