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 get the impression we have different definitions of 'throwing the bike around' ;)

But I ride pretty damn hard on my veloflex's (20mm front) and they've never let me down. I think its partly down the the oval profile of the tyre, which seems to put more rubber down when cornering.