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maybe it's a number to track what casting mold was used for that rim?

 

Probably just production information codes

 

I'll second casting numbers.

 

After doing some research I’ve found that these numbers have to do with DOT specification codes for wheel dimensions. They designate wheel size, offsets, hub diameters and a host of other wheel attributes.

 

That sounds logical, but the fact that the OP said that "all 4 wheels has different numbers" seems odd. The wheel size, offsets, and hub diameter should be the same for all for wheels.

 

I would guess that the different numbers would indicate time stamp information.

 

Hello guys I’m new to this and have been having installing this aftermarket radio on my 2010 Prius I’m not sure what I would need because the cables don’t connect well and it seems to be for the model with the GPS which I do not help. If you guys can do a big favor in helping me out !