When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Save them in case you ever want to sell the car. If you don't want to I am sure someone will want them. Or just keep them if something happens to you new wheels.
I see a lot of postings on Craigslist.com for car parts, accessories, and etc. It is absolutely FREE to post on the website and you may come across a buyer who is searching for your wheels. I am actively searching Craig's list for a (2005-2008) rear GT black bumper. Good luck!
If you have to drive your car in the snow or if you do any racing at the drag strip, keep them. You can mount snow tires or drag radials on them. Or if you ever sell the car you can put the stockers back on and sell the aftermarket wheels and hopefully get a little bit of money back from them.