72 cutlass. Searched forums and I believe its 7/16-20, however local rim shops are saying its 1/2 in. Id like to go with what the forum says but if im wrong those guys will never shut the hell up. I would love to put my wheels on and prove them wrong at th e same time.

 

Intermediates are 7/16, full size are 1/2 for the year you have stated. Maybe they think all Oldsmobile are full size.

 

You need 7/16

 

Is 4 doors still considered intermediate?

 

Yes as long as it is an A body.
What wheels are you putting on? Brand? Styles? Size?

 

Thanks. 15 in craigers on back. Not sure of width or style but I can post pics tomorrow. 14x6 SSII in front. Just a start tho. Its an upgrade from my mismatch sizes on there now. 3 different sizes and bigger ones up front. Who does that?