Onewheel Safety Wheels
thingiverse
Adding two safety wheels to your Onewheel can be super helpful in case you experience a nosedive. I only tested this setup on the Onewheel Plus, but it might work with the XR too - give it a try and let me know how it goes! These safety wheels are compatible with 40x18mm wheels that you can buy from Amazon here: http://bit.ly/40mmWheels. You'll also need two 1" 10x32 screws to secure them in place. I found a pack of three at Home Depot, or you can grab 100 from Amazon here: http://bit.ly/10x32-1inch I'm planning to experiment with mounting the safety wheels higher up so that I don't lose as much angle of attack when I ride.
With this file you will be able to print Onewheel Safety Wheels with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on Onewheel Safety Wheels.