Review on 🅿️ Parking Target HD24: Heavy-Duty Parking Aid for Car and Garage Wall Protection - Convenient Installation – Peel n Stick - Requires Only 1 per Vehicle – Engineered to Outlast your Vehicle - Ideal as a Thoughtful Gift by Michael Santos

This works great, now I don't worry about the backups being enough or not. My two suggestions: 1. Get a second person to help you. I wanted to get an inch to the garage door, so the second person helped me up an inch without bumping into the door. I then used masking tape or masking tape to do the backing of the rear tire. Triple check by applying the bump without removing the protective film for fit.2. I only used one per car. I think I'll buy one more for each car so there are two. The reason is that sometimes I make a little mistake and miss a beat. So longer bumps and/or extra bumps help.