Originally Posted by JunkYardBike
I ran 25s on mine no problem. Again, it's back to Sheldon Brown! He's got a
chart (look near the bottom of the page) giving "safe" tire and rim width matches. You just need to measure the inside diameter of those rims...you can get an inexpensive micrometer at most hardware stores. Good tool to have when working on bikes.
Cool. The 19s are crazy thin.