Antonyms for flat tires

MOST RELEVANT
Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.

EXAMPLES FROM THE WEB FOR FLAT TIRES

Your brain's got flat tires, and its motor doesn't fire, and its clutch is broken.

"It won't come to that, I hope," laughed his companion, as he bound the flat tires fast with straps.