These tires were treated with liquid wrench one time. Only tire sauce and or just cleaned with motor spray was used. 3 carpet race days and about 5 asphalt race days. No swelling. This one set will most likely last me the whole season. I’m not complaining for $50 for a set of tires a year. My last set lasted me all of last year with same treatment. That set still has just worn down past the tread. I let someone borrow that set at the last race and he won. I will post a pic of last years set