hello. This problem has been destroying my nerves lately, when i edit the stock wheel size to 20 on the xrg, no matter what rim i load, even stock, the inner portion stays small, and just floats there, please help me, i'm going to smash this f@c&@&in computer...

You can't do anything with that, the rim model has fixed size.

So hopefully when you put on the 20's you hella dropped it. Caus' that really sorts the handling.

Possibly your using the wrong game, try this one.
http://www.gamesonline.fm/games-for-girls/me-and-my-mini

Edit, sorry possibly the wrong link there, I probably meant this one.
http://www.gamesonline.fm/rest-games/pimp-my-car