With little feedback you have to build up trust that the G will negotiate the next turn, particularly given the extra brake pressure you need to haul off sometimes considerable speed, but the newfound predictability and relatively early onset of scrubbing and squealing noises from the front axle give decent indication of how much the tyres have left to offer. (evo.co.uk)
Just check out a few of the latest screens (a few give decent indications of the size of the levels) and keep an eye out for the suspiciously smiley tree in the one below. (nonfictiongaming.com)
SCID - II can be self administered or administered by third parties (a spouse, an informant, a colleague) and yield decent indications of the disorder. (bpdfamily.com)