These are arrays - imagine a chain of cells tied to each other, each containing data - in this case a number calculated from the height and width of the screen. fly is the height, flx is the width. The advantage of making a calculation of fly*0.8 for example is that, in theory, no matter the resolution of the screen, the placement will be the same. Each cell in the arrays in question represent a single wheel logo art.
So what you need for your style of wheel is something like this:
the x location of each wheel logo art on the screen:
local wheel_x = [ flx*0.2, flx*0.2, flx*0.2, flx*0.2, flx*0.2, flx*0.2, flx*0.2, flx*0.2, flx*0.2, flx*0.2, flx*0.2, flx*0.2, ];
the y location of each wheel logo art on the screen:
local wheel_y = [ -fly*0.22, -fly*0.105, fly*0.0, fly*0.105, fly*0.215, fly*0.325, fly*0.436, fly*0.61, fly*0.72 fly*0.83, fly*0.935, fly*0.99, ];
wheel_w = the width of the logos
wheel_h = the height of the logos
wheel_a = the alpha value of the logos (opacity)
local wheel_r = the rotation value of the logos