The guide lines show where the centerline of your rear end will go at whatever angle the front wheels are turned. I like it, I keep both turned on.
SR #265 | "Quia currus certatus, inferius"
13 Focus Ti Sedan w/Handling Pkg, MFT Sony 10 NAV, Leather
13 Focus SE HB Sterling Grey, 201A, Leather
06 F350 6.0L DRW King Ranch, Sunroof, Rhino Bed Liner, 4" MBRP Turbo Back, AirRaid, Edge Chip w/Pyro