Here's a very quick and dirty sketch I did of a dropship for mecha troops. It is launched from an orbiting starship, comes down through the atmosphere, then ditches the heat shields which cover the tires (which also serve as the landing & VTOL rockets), ignites the retro rockets to land, rotating the retro rockets to become the six tires. It can then roll around the surface, and open its hatches to deploy mecha and infantry.
Although it's like Aliens' dropship and APC combined, I was originally inspired by the MTA Titan from the aborted (thankfully!) Robotech II. I know Battletech is also big on dropships, but I designed this for a Mekton campaign I ran. Go figure.
(By the way, I know what a droptank really is... the name is a play on the term, o'course.)