yes, 4.5 is what you want. And if the center bore isn't the same then you definatly want bigger. Many will say that all our hubs are hubcentric and you must have wheels with the same center bore or adaptare hubcentric rings, but I've run many different combinations of aftermarket wheels over the years none of which had the same center bore and I've never had a problem
You should be able to get some rings for those wheels if you want them though.
You should be able to get some rings for those wheels if you want them though.