Beginners course on Tire/Wheel Fitment without sticking out

[Brandonrescue]

have a question regarding wheels. I will end up lowering the car, when it comes to wheels-I know the exact rims i want (AMERICAN RACING DAYTONA) but what do i need to do to make sure the rims are measured correctly to fit? Im just afraid Im gonna buy the rims and the suspension kit THEN the tires/rims will stick out then i wouldnt know what to do! Would I have to change my rear axle and shorten it? Would i have to ask the company or someone private to change the offset of the rims to fit inside the car without sticking out? Is this expensive? Help me