Choosing the right set of rims can dramatically improve your 991 GT3 (2014+) Porsche's performance, as well as creating a beautiful, finished look to set it apart from the crowd. Before you begin, you should measure the vehicle and familiarize yourself with the manufacturer’s specifications. Smaller rims range in size from 17 to 19 inches with the largest coming in at 22 inches. These rims below will give you the best handling and performance when it comes to your Porsche's tires. This pairing is a solid investment that you can count on.