I may also note along with Allen's comment and query on the wheels, the rear 16s appear to be the 8 inch wide variant with the wide lip as seen in the photos.
I do not know when your car was built or it's options, but this much I do know from documents, sales brochures, and the Monroney stickers I have seen on '82/'83 cars. Several options of FUCHS were available for the car in color and one option in size fitment for 16s. They were 7 inches wide only unless bought over the counter or upgraded from 911s. This changed late in '83 and is seen on '84 m/y cars and some late '83s as an availability of 7 & 8 x 15, 7 inch by 16 , and 7 & 8 x 16.

Date codes are your keys to this, as noted by the backstamps and offsets denoting along with part numbers, just what cars these were intended for.

But you know this already; I'm just re-hashing a very old and oft debated topic, which always is verified by the codes, the dates, and numbers. ( and data reinforcing this on door jamb labels of those cars in question, such as seen on my '82 build with ONLY 7x15 cast and 7x16 forged specs listed. ) Later built cars may have been offered options differently and labeled as such.