If you run it correctly and use high-quality wheel spacers, it is very safe，When shopping for spacers, make sure they're both hub centric and wheel centric. This will ensure that your wheels are centered properly. Also, consider the quality of the metal used. I've seen cheaper brands have their studs shear. If you're looking for a reputable brand, BONOSS is the way to go. They're very well built and will hold up well. I bought a set used 3 years ago and they're still perfect. Are wheel spacers good or bad for your car-BONOSS?I am considering installing 10 mm hub-centric wheel spacers on the rear of my 6MT sedan. Are there any issues with doing this? Has anyone used this type before?