Just waiting for the shipment. I’m running 34” studded snow tires right now so I’ll probably swap it out soon. It’s a pretty sizable expense but well worth it.
If you have +27 stock 20’s put in a 1/2” spacer and you will be fine. I have a zone 4.5 with 33’s. No rubbing whatsoever. I just won a 6” BDS from Custom Offsets and they said I can run 35’s with this setup with no rubbing. Good luck. You’ll have a whole new truck once it’s lifted