I Autocross (and do the occasional time trial), have 2 trucks and 2 cars and live in southern Ohio. This means I have tires in varying states of use.
I recently bought a house and now I have room to make a tire rack in the garage.
Step 1: Location, Size and Design
I choose the corner of the garage. I figured along the long side and not the back of the wall... because tires are kind of an eye sore and maybe I'd see less of them.
As for how big... I want room for a few set of snow tires if needed, a full set of race tires, and maybe a spare set of race tire.
My race tires are 315's for the front and 335's for the rear. Four 335's is like 50+ inches in width. This means my tire rack will be made 5 feet wide for some room and normal tires will have more per shelf.
Yes, per shelf. I want 3 shelves if possible. My garage has an eight foot ceiling. Since the tallest tire around my house is 28 inches I think this is possible. (I did not check the size of the big truck, but that truck gets an All-Terrain tire all the time.) The race tires are typically 25-26 inches tall.
So really the only design requirement is that the the whole thing is off the ground. With metal stand offs like the really expensive cabinets on Ultimate Garage or something.
Also, it would be really nice if the tire rack had some dual purpose -- it can be a regular shelf or something if I did not need all the room for tires.