Dog dish caps ?

I am looking to buy a set of dog dish caps off ebay that measure 9.5 inches across. I have 15inch 5 lug stock rims. The seller says they came off 13inch rims. Does anyone know if they are interchangeable. I measured the center ring on my rim and it seems like they would be a tight fit at almost 10 inches. thanks

No, the 15" wheels take the bigger dish -- it's like 10.5" for yours and the 13 and 14" rims take the 9.5" dish. Been there, done that.

thanks for your response. You have saved me the time and hassle.

Sean