The curves in the rear lower control arms allow them to clear the frame under maximum suspension compression. (fourwheeler.com)
The foam triangles underneath the car are a cheap and easy way to measure ground clearance during suspension compression over uneven surfaces. (evo.co.uk)
The front wheels must be able to turn lock - to - lock and both axles must be able to go through full suspension compression and rebound without putting stress on the hoses. (hotrod.com)