Are all center caps the same size?

 

good question but i doubt it..

 

I have centercaps from the TL 16x7 inch stockies inside the17x8 04 TL wheels. So they might be interchangeable for some sets, just not across the board

 

I have the chrome A center caps I think from the RL or whatever Acura that comes with it and it fits perfectly. I think its standard size for all Honda vehicles. The chrome A's would fit the my Si also so yea. And no I don't have chrome A's on my Si.