I have a 2008 Outlook XR with 265/65/R18 tires on oem 18" rims. Trying to find a tire that looks more off-road than minivan-ish. Choices seem limited. Seems like a lot of choices with a 16" rim. Has anyone downsized? Need advice from someone who has either downsized or found an 18" All-Terrain tire that has an off-road appearance. Thanks.