Tire bed:
tight fitting of tire on rim (wire cores)
tubeless tire (today): sealing

Sidewall:
rubber covering of the carcass
prevent fabric from destruction (scuffing rib)

Tire tread:
adhert respectevely positive-engagement with road
function of tire: rubber compound and profile
(summer-, winter-, all-season tire)

Carcass:
supporting structure of tire
Layers of fabric were cotton in the past, today
nylon, polyester