Greetings! Two separate xml files, one for the rear wheel drive model and one for the all wheel drive. I did this because I have more than 160 wheel configurations on a rear-wheel drive model, and if I add all-wheel drive configurations here, the game crashes a lot. Consider all brands of tires available in the game, plus goodyear and firestone. Plus a logical component - if you include the conditional cost of this very all-wheel drive in the configuration of wheels for all-wheel drive, then every time you change the configuration you pay only once, but you pay this very cost, which is wrong.