T85 means F70x14 (RSW) Red Side Walls Fiberglas.

The W codes in Gailen's code book only go up to W6S so don't know what 88 means.

The build sheet for my 69 GTX has 16-5 under Wheel and I know it came with steelies and dog dish hubcaps. Sorry but don't know what 16 Y2 means. Can't find it in Gailen's book.