Okay, what was the stock tire size, 245/65R17? Peterk9 is going to insist you should stay within 3% of the stock wheel size, while the rest of us have more mixed feelings about that.
Do you want aggressive to mean a taller sidewall or just the tread, or both?
Do you accept that more aggressive is going to sacrifice handling, on-road traction, stopping distance particularly on wet/ice/hard-packed snow? It will be a downgrade when you wrote "upgrade" on anything other than off-road performance or deep, loose-pack snow, but will ride a bit softer if you inflate to a PSI appropriate to the vehicle weight, meaning a larger tire needs less PSI to wear evenly, which also reduces handling and fuel economy.
Anyway, you might be able to fit a 265/70R17 on it, something like a BFG KO2, but if you have the base model with only FWD, I don't see the point as it's not going to be good for off-roading so you are sacrificing all the on-road benefits of non-A/T, street tires just for looks.
https://www.tirerack.com/tires/tires.jsp?tireMake=BFGoodrich&tireModel=All-Terrain+T/A+KO2&sidewall=Blackwall&partnum=67SR7KO2&tab=Sizes