Because it is primarily a road car? And because 99% of them will never venture further off pavement than their owner's backyard, or a graded dirt road? Not to mention because a tire like the Geolander will increase ride harshness, and decrease fuel mileage. But I'm sure the question was really only hypothetical, right?4ALAB said:
Why do manufacturers put street oriented tires on light trucks and crossovers? Same reason. As much as I hate to say it, if you were to have a testing authority run the car through a number of handling tests, I'd bet that it would 'do better' on the stock tires, despite the improved feel...