25mm tyres

I tell you what though Duncan, by the same toke, I wouldn't like to be cornering hard on bumpy roads with a 19C tyre up front, I prefer slightly wider because you can throw the bike around a bit more and still have bags of grip, but then again being as big as I am I guess I need a bit more grip lol, I also prefer the extra protection a slightly wider tyre gives the rim from pothole scuffs etc.

I wouldn't like to either, thats why I run a 23c Stelvio Plus on the front, nice and grippy, and a Stelvio 28c on the rear, loads of life for fixie skidding. :)