Have no idea a whole lot about these. Came off an older chevy bonanza. Still in fine condition. I tried determining them by means of directions I discovered online. They are either 15 x 9 or possibly 16 x 9. Not 100 % sure as I'm not exactly mechnically likely (certainly). Simply tired of them sitting in my garage. Would be happy to see them be put back on a truck for someone to enjoy. Don't hesitate to email or text with any questions. If you 'd like but I may miss out on the call, you can call. Simply leave a message and I'll return as quickly as I can. Thanks for reading!