Steering wheel size.

I've parallel parked my car multiple times with the 16:1 steering and 275's up front. It's not something I look forward to, but it's not like it's impossible. And as my daily driver it's always getting parked at the grocery store, work, and other various parking lots when I'm running errands. Most of the parking lots around here must have been designed for cute little compact cars, because they're all pretty tight.