Originally Posted by
rorfrancisco7
I have the same doubt, nowhere does it say what internal width they have.
On a rim with an internal width of "x" you can safely ride tires of nominal width ranging from x to x+10 or even x+12mm.
Most modern road bike rims have an internal width of 17 to 25 mm. With any of these, it is acceptable to mount a tire anywhere in the range of 23 to 32mm. 32mm tire on a 17 or 19mm rim (internal width) might be pushing it. Otherwise, anything from 32mm down should be okay on any size of modern road rim.