roller skate effect
n.— «There is also what is called the roller skate effect, where the wheels and tires are too small for the body. (Volkswagens of the 1980s seemed to have especially small wheels proportionally, and fell prey to this phenomenon.) Huge wheels of 20, 22 or 23 inches, by contrast, make a vehicle look tough.» —“Body Language: How to Talk the Designers’ Talk” by Phil Patton New York Times Apr. 1, 2007. (source: Double-Tongued Dictionary)