Ajo Joseph - For serious gravel you need minimum 35c tyres and a dedicated gravel wheel set. 25c tyres will you slow down in gravel and also not provide the required traction. There is no doubt GP 4000 or 5000 are the best road tyres one can buy in my opinion.
How does these do on gravel? I had great experience with the older 25c GP4000s. It was the best tires I tried. Transformed the ride on my Focus Cayo
Ajo Joseph - For serious gravel you need minimum 35c tyres and a dedicated gravel wheel set. 25c tyres will you slow down in gravel and also not provide the required traction.
There is no doubt GP 4000 or 5000 are the best road tyres one can buy in my opinion.