What steel rim size does a Mazda protege 2000 1.6l LX use?

[mazpro00]

I went to the junkyard today and got 4 rims with 4 tires on them the rims are 15x6 and 4 lugs because i thought they were 4 lugs i thought they would fit my mazda since my mazda is a 4 lug car, turns out the rim was slightly to big and all 4 lug hole couldn't so what steel rim size do i use and i plan on exchanging this wheels/ Rims for the right size?

 

[tweety2300]

Just cause its 4 lug doesn't mean it's the same size. Protege uses 4x100 there's many other sizes, my 323 is 4x114.3, my mustang was 4x108. There's probly 10+ different sizes, may not seem like its off much but it will cause it to not line up correctly.

If you google it there's a few sites that has what cars use what size rim