The online racing simulator
Request: Ferrari 488 GTE / GTLM tutorial
Or, you could make your own:

Make a new photoshop document, 512x512 px (but any size will work).

Make the colour mode CMYK

Select the Black channel

Fill it with a black-to-white gradient

Apply Filter/Pixelate/Colour Halftone, make the Max. Radius 12 and change the value of Channel 1 to 45.

Play with the max radius value for different densities of dots.

You can either cut and paste this onto your skin document, or you can export a brush from it.
Is that a livery or dazzle camo?! Anyway, yeah, it's fairly easy to make the texture or textures separately and paste them onto the skin as you want. Just remember to paste them, rotate them first then adjust for stretching.
Quote from Subphonic :rotate them first then adjust for stretching.

Very valuable tip - so many do it other way round and texture/logo/writing looks so wrong...

FGED GREDG RDFGDR GSFDG