97 blazer wheels fit a 03 s10 xtreme
15" may not clear your brakes. I would jack it up and try one on.
They should fit the main thing is if they clear the brake calipers. I would guess that there shouldnt be any issues since they are based on the same platform.
Going from 15 to 16 no worries.
Ok I well
Going 16 to 15
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