I thought this would be easy ... my Defy currently has 700*25c tyres on a 622-17 wheel. I am wanting to ride more on gravel surfaces and thought it would be easy to replace my Giant Gavia AC1 tyres for ones with a tread more suitable for gravel/road. I have spent over 2 days searching online for a suitable tyre and every time I think I've found one something doesn't seem to work. Has anyone fitted tubeless gravel/road tyres to their Giant Defy 2 2018 - if so please help me keep my sanity by suggesting a tyre which fits!