the only way around this issue if you want to drive the car in the winder is get a set of stock or aftermarket 9" rims with 275's. that is as wide as I have found in an all season.
I had the same inssue with my mustang when I upsized the rear tires.
I think the real issue with these tires well be rapid change in temps.
On thing to remember though is these tires are worth $$$ you could always dismount and sell them. I did with my f1 supercar runflats on my 08 coupe becasue the straitline grip on those tires is bad. I upsized to 305 invo's the day I got the car. way better strait line grip and I got more out of my stock tires than the new ones cost.
2013 ZL1 10%lower,rotfab,90mmtb,SP headers
(president of the tangent oregon trophy husband association, founding and only member)
2013 Megacab 8" lift 38"mt's