Well, this isn't all scientifical 'n stuff but it's from my experience. The wheels on my car are 16x8 +30 all around. Very nice fitment in the rear. Up front is another story. When My suspension was stock they stuck out about half an inch or so. To the point that the fender would slice the tread. Stiff swaybars, fully adjustable suspension, and camber plates. took care of that problem. But +27? That's going to be out even farther than mine were. Good luck.