For daily driving, there isn't really a need to have a spare. I haven't had a flat in 15 years, and even if I did I have roadside assistance on my insurance. When I replace the rear bumper, are there any out there that allow you to remove the tire and carrier? This would save weight and improve rear viability. I've seen some that look like they have a bolt on top of the hinge, but the description doesn't say explicitly that its removable.