Can I use a tube with my ZIPP hookless rim? A tube may be used provided the tire is approved for hookless use and pressure remains below the 73psi/5 bar limit for tire retention and rim safety. The pressure limit is based on ISO 4210 and ETRTO standards. Use our Hookless Tire Compatibility Chart to find the best tubeless tires for your wheels. Optimal tire pressure can be found by using our Tire Pressure Calculator. Related articles Can you run a tube in a Zipp hookless rim with a tubeless tire? What tubeless tires are compatible with Zipp hookless rims? What are the tire pressure recommendations for my Zipp wheel? What tires are compatible with Zipp 303, 404, and 808 Firecrest hookless rims? Is a wider tire with lower pressure faster?