Originally Posted by SurlyJohn

Those black center caps are from the 1990-1995 2nd Gen runners, Tacomas' same years and some T100 trucks up to 1998 as I remember. They fit over the ADD axle, but with OEM 15" wheels. Sold those, need a cap that fits the of the Sequoia/Tundra 1st gen 17" split spoke wheel, over the dust cap and rivets. No spacers on my wheels, the Hyper Silver ones fit really well with 245/70/17s so no chance of rubbing. They are a little tall, but I like tall over rubbing plastic.
The first post is an 18" wheel from a newer 4runner, he would need the same type of raised cap that fit the prongs of his machined/chrome wheel for an 18" center hub. I see the polished metal ones online all the time, but it is the compatibility sizing that gets away from me.
Can't just go to the dealer and ask, "What center cap will fit over this axle?"