3D-printed airless bike tires deliver a 'smooth ride' - CNET
Airless bicycle tire
you can make your own set of airless bike tires using PVC pipes, bolts and nuts
SMART METL airless bike tires get rubber tread, 50% lighter! - Bikerumor
Amazon.com : BAIBIKING 14 Inch Bike Tire Solid Bike Tires Airless Anti-Slip Tyre for Floding Bike Road Bike BMX Bike Kids' Bike Tire 14x1.75 (14 X 1.75 for Bicycle) : Sports & Outdoors
A sustainable cure for bike flats? - Flatbike
Airless bike tires made of space-age metal never go flat