Recently added some new wheels and tires to my lude. 225/40/18s. Having a 40 series causes the vehicle to sometimes rub on the wheel well. As far as my suspension is concerned, would anybody recommend dropping it a certain amount, or is there a way for a "stiffer" spring maybe? Not something that will feel like I hit a concrete wall everytime I hit a minut bump but something that won't cause the vehicle to dip so low over bumps? Thanks in advance.
Dan

EDIT: Currently, the suspension is completely stock.

 

If your suspension quest fails, just run 215/35 like most ludes on 18's do.

 

Shoulda got 215's. But if you want to keep those, just run a stiffer shock, or maybe a stiffer coil-over that's set at stock height.

I would try something like a KYB AGX on stock springs.