Step 5: • Check the tire size and refer to the installation manual for the required number of ounces of Ultraseal to install. NOTE: For high-speed tires (over 30 mph on hwy) •Tires must be balanced first before installing Ultraseal. • Install only the correct amount of Ultraseal in High- Speed tire applications. • Not for use in low-profile tires. • Not for use in Ultra-High Performance tires • Not for use in Ultra-High Performace Vehicles.