Thank you all for your input.
I thought about getting rid of the RFT's but like I said, I'm a paraplegic and being able to drive to a tire shop is needed.
My 07 Charger with 450 rwhp has a staggered set-up with some camber and my rear Nitto Invo tires (315/35/20) on 20x10.5 rims lasted 20k miles with a full day of autocross and 10+/- trips to the drag strip, plus spirited driving with WOT every time she goes out. The stock rear tires were 255/45/20 on 20x9 rims. This is why I was wondering if 275's in the rear may help some as far as inner wear of the tires. If not, I guess I'll be buying rear tires every 10k miles or so.