16 inch wheels. Starting with 1960 is this wheel , 6 lug 16x5 , 5/8 valve stem hole, 3 clips GM stamped Kelsey Hayes. This wheel is GM part number 3715441 . This wheel was in use since 1954 to 1962 but if you look in other books it actually made it into early 63 production under another number 2324150 , Same exact wheel just a GMC part number used also by Chevrolet. In these pictures is a mix of NOS and used 16s all dated from 1957-1967 . The 1967s would be considered "over the counter" replacements but there are no outer differences in those so they are fine for a restoration.
Heres the 1963-1969 wheels in 16x5 , 6 lug 16x5 , 5/8 valve stem hole, 3 Nub, GM stamped , Kelsey Hayes wheels. This one is dated 1966. This wheel is GM part number 2440830 and unlike the 15 inch wheels , they never used a bead lock stamping in the outer edge of the rim at least through 1968 . Another part number 3974200 was used but this number began use in 1970.
Here are the 17.5x5.25 six lug wheels. 6 lug, 6 clip 5/8 valve stem GM and KH stamped ,GM Part number 2394627 . This wheel with this part number and profile was only used from 1960-1968 from what I can find. The big difference from 1959 and earlier 17.5s is a lower profile center hub was used on the early wheels. The red primered one is dated 1966 .
