I was going through a similar choice with my Explorer. Trying to think if I wanted to go larger tire size for a bit of ground clearance. There's a few things you need to think about;
- Larger tires will zap more torque from the engine and cause extra stress on the driveline & transmission.
- Larger tires will stick to a dry road more but will tend to float in other conditions (rain, snow, mud) rather than bite down and dig in.
- Wider tires will have more rolling resistance and will zap fuel economy. I'm unsure of whether or not the higher rolling resistance will overcome the extra grip you're getting. Bottom line is, a wider contact patch will have more surface area but less PSI against the ground for bite.
- Larger tires will cost more so if you're on a budget, you'll want to stick with factory size but a better quality brand rather than a larger tire from a cheap manufacturer.
- Different sized tires will affect handling but I imagine in your case it would make the car feel more 'planted' and stuck to the road.
Not all of those things will affect you or affect you negatively. I mostly put them up as general things for other people to think about.
*EDIT*
Another thing you might think about is axle ratio. Some vehicles come with weak ratios that wouldn't be good for larger tires.