Originally Posted by
SoSmellyAir
Like
ofajen said it is the new ETRTO standard. If you think installing GP5K 28 mm in a 19C rim is surprising, imagine mine when I installed GP5K 25 mm in a 17C rim. But the tires do grow wider after a few cycles of pre-ride inflation and riding.
That is good to hear. I'll monitor the width over time.
Part of me wants to order the 32mm versions based on how skinny these are (hoping they match the 28mm width of the Gatorskins) - I like me some wide tires