Last night I was looking at the GM Heritage Center online. I am searching for 17" steel wheels. Anyway, in the process, I think I saw some 8 lug 15" wheels. Keep in mind it was late night fogginess. You might look through the specs of their suburbans. The years '89 through '91 show 8 lug 16" but I may also have seen a 15" 8 lug as well.
