215/75/14 ? this is the closest?
i usually get 225/70/14 but they are short? i think the factory diameter was 26.7? correct?
Thanks Johnny i have the 14x6 ss1's

 

The 215's are most reasonably priced and look right on the 66 Cutlass.

 

Original tires on a 1966 Cutlass were 7.35 x 14, which were 7.35" section width and 26" outside diameter. Original tires on a 1966 442 (and optional on a Cutlass) were 7.75 x 14, which were 7.75" section and 26.7" OD.
215/75-14 tires have an 8.5" section width and 26.7" OD
225/70-14 tires have an 8.9" section width and 26.4" OD

The reality is that you will barely see the difference between the two. Personally, I've always liked the BFG Silvertown redlines in 225/70-14 on these cars. They USED to be reasonably priced. Since Coker took over production, these tires are now over $250 apiece.

 

Thanks for the reply gentleman
i want little width so i think the 225/70/14 is the way to go. Theae are the ones i always put on any 70-72 i have.
i just wasnt sure about the 66

 

With my wagon I wanted more of a stock look so I went with the 215's they look good.

 

That thing looks like it's hit everything but the lottery.. Just kidding,love them flat roof wagons.

 

lol