Originally Posted by
WhyFi
Even with the smaller sizing of the GP5k (relative to the GP4k II) in mind?
Looking at the 25mm GP5ks on my bike now, there's not much room under the brake arch for something significantly bigger. 28s, maybe. 32s, nope. Being that I just put a new pair of 25s on last week, it's not going to be any time soon that I will think about something different.