Knowing that the OEM offset for the majority of wheels is +55 front and +38 rear, I added 15mm adapters on the front and 25mm on the rear. The adapters are from Bonoss. They are very well made and I got some great emails from them during the process to make sure everything was to my liking and to the spec I ordered. I highly recommend them. So my net offset is +40 in the front and +13 in the rear. Controversial, I know! I got these values after doing some searches and on line calculations, but only after my installation did see posts about how anything more than 17mm on the back will lead to all manner of destruction and devastation. Well I have had them on for several months now and I have had zero rubbing or any other issues. Lucky? Maybe. Granted my car is NOT lowered, though I wish I could, but I already scrape the little flappy thing on the front on all manner of driveways and the "speed cushions" here in Nashville. I did trim the non-threaded portion of the studs on the front. Please take note of how I protected the rest of the car from the sparks emanating from my angle grinder. I then went over the cut end with a file to clean it up nicely. I like the stance now, but some might find the rear to be poking out too much. I get it. Let me know what y'all think. As always, I truly appreciate everyone's thoughts, opinions, insight, expertise, good natured ribbing, and even bad natured ribbing.