Our garage is a tight squeeze for our Toyota 4-Runner & GMC Truck so we got these to help us stay aligned in our own "spaces" & in order to be able to close the garage door & yet have enough room in front of the vehicles to walk, etc. We have found it to be very helpful to us & have had no problems. We have had to re-align a couple of times, but is absolutely no big deal to do at all. I would recommend these to any one who has the same "space" problems that we do & in fact, bought one for our son & daughter-in-law just last week.