Hey, you guys!

Be careful with any advice to the lady to stray too far from OEM wheels and tires. Overall tire/rim size is limited by clearance issues, particularly up front. Regardless of wheel size, any tire as an assembly much taller than 25.5" and wider than 255mm runs the risk of rubbing rubber on some bad places up front.

If you go much fatter and taller, you WILL rub the rearward fender-well (not too problematic) and you WILL rub the upper nut of what I think is called the control arm (could be disastrous) at full turn lock.

Be careful. If you are seriously considering fooling with different wheel and tire configurations in search of economies, there is a handy tire/rim comparison calculator on the Rims-n-Tires.com web site. A real nice tool. Use it or lose it.

Regards.