My partial solution to the splitter scraping problem was changing the summer only tires to a taller, slightly narrower 275-40 ZR-19 Michelin AS3 . This was a big help,plus being able to drive the car all year if needed. I am also looking at a lowering spring for the rear, to change the angle of...
I have had a set of the MRR M600 wheels with a chrome finish on my Shelby for a year without any problems whatsoever. The Shelby is a street car only,no track time. I am very satisfied with them.