2011Panamera4

Does anyone have any experience with the "PR5" brand wheels that are replicas of the 20" Turbo II style wheels? (as found on eBay). I'm leery of going with non-stock wheels because these PR5 20" wheels are a 1/2" narrower in the front (the PR5's are 9" wide versus the real ones being 9.5" wide) and the offsets on both front and rear of the PF5's are different than the stock Turbo IIs. The cause of my leeriness is that last summer I used a set of TireRack-supplied 18" wheels and they absolutely destroyed in only 5k miles the inner edges (like bald) of a rear set of new PZero tires, and both the tire pressures and alignments were fine. So I'm thinking it was the wheels and their non-stock widths and off sets. So I don't want to burn through yet another set of new tires by having non-stock off-set wheels. Hoping someone has put some miles on these PR5 20" wheels and can comment.
Thanks.