2009 Toyota Highlander Sport 4dr SUV AWD (3.5L 6cyl 5A)
Too early to say much, just got the car. However, after reading very bad reviews on the OEM tires (Bridgestone Dueler 400 H/L, I ended trading them in on a new set of Brigestgone Dueler Allenza's 255/55/19's (one size larger). WOW! Cleaned up the mushiness; they feel way more tuned to the suspension (at 42 lbs); and the more stable stance at high speed (80 MPH) is a drastic improvement. The Tire Rack rating is way better, and I need this car to perform in snow. The increased diameter is minimal (maybe .4 inch) while the extra width is part of the much improved feel (perhaps 1.5 inches).
Obviously from my perspective: better tires. And, since I often carry surfboards and windsurfers: I think the roof rails should extend further forward. For me, this was almost a no go on the car.