I don't recommend WMplants, the polycount on the bricks is massive and will cause serious framedrops as the models were ripped from Ldraw. Brick_Plants includes many of the same bricks but has less polygons and basically look the same.
I'm already using Brick_Plants, but I really want WMPlants simply because of how mysterious it is. Taken down by Ephi after the 3rd update and made unobtanium. I'd really like to get my hands on it, and I know a few other people who are also really interested in obtaining it.
Also, if you're looking for bricks to make vehicles with, try these
This was one of the addons on my list, and TableSalt found it for me (since Google didn't return any results). Thanks, however.
heres the security cam
http://meshiest.com/add-ons/Brick_SecurityCamera.zip
Much love <3
http://forum.blockland.us/index.php?topic=289309.0 It has tires in it.
This was already linked by TableSalt and Megaguy2, but thanks. I really want to obtain a copy of Brick_Tire specifically, though.