Not sure how tight a 275/60/15 is in a stock Duster wheel well but mini tubbing at a minimum will give you a greater margin of error to avoid the tires rubbing when you put the car in weird angles or when your kids are in the back seat compressing the suspension. Proper deep wheel tubs would be even better and allow you to lower the car if you wanted that kind of stance.
I am starting to lean that way, just have to run it past my engineer to see what they think about it. But yes i think to tuck the tyre would require this. However still not sure how to address the outer tub issues
