[sagsol1]

Cx 90 gains nearly 500lbs from cx 9 vehicle weight. Ouch! See why 6 cylinder needed although mileage better. Needs bigger tires 20mm wider. Bigger brakes and 7 inch more wheel base to help polar moment of inertia.

 

[ASH8]

And a much bigger vehicle which means more weight.

 

[GRB60]

The wheelbase is already about 6 inches longer than similar vehicles similar length vehicles. I doubt that it’s possible to extend it 6 additional inches. 275mm tires are very wide compared to competitors. There are trade offs to all decisions. Wider tires don’t turn as well, add unsprung weight, cost interior space and affect fuel economy.