To start off I'm new to the whole bike thing, I've ridden bikes before but never cared as much as I do now, and since I started to care I realized that I should learn as much as possible, but that stuff doesn't really matter.
So I was looking through City Grounds and was planning on getting replacement tires and maybe a new wheel if I ever need it. Firstly I understand tire sizes but what confused me was that when I was looking at the tubes they had another measurement. Example, I choose the 700X2325 tubes and in the drop down box above it, it asked 32mm, 48mm, and 60mm. Now I've messaged City Grounds and didn't get an answer back so I thought I should ask here.
City Grounds | Q-Tubes 700c Presta Valve
The box that is marked color has those three numbers I've stated previously. Any help would be helpful to me in my confused state. Oh, and since you've decided to help maybe you can answer this question for me also... Can you mount 25c tires on Aerospoke 700c wheels? I feel like it's a yes but I'm new to this and would rather hear someone with more experience say it.