by Tony » Tue Oct 16, 2007 12:19 pm
If you want extreme puncture resistance - try Specialized Armadillos. I ran the non-folding version of these on my winter hack bike for a season and never punctured them. However, they are very heavy, very stiff and very difficult to get on the rims. They also seriously lack grip and, of course, give a cr*p ride. Consequently, I would NOT recommend them for commuting..... I would want more grip for handling confidence and safety. A reasonable compromise could be either Conti GP 4 Season or (heavier) Conti Gator Skins.
The Panaracer ones mentioned in Andrew's post could be good. It sounds as if they are Panaracers ultra-grippy (Extreme) compound on a heavier, stronger carcass. I think other manufacturer's offer similar high-grip (racing) compounds on heavy winter carcasses too. The outer layer may wear and cut-up a bit - but that's worth it for the extra grip / saftety / handling, etc. IMHO.
Whatever you go for, regular tyre inspections are critical. The thicker tyres often retain tiny flints or shards of glass in the tread which will eventually puncture them unless you pick them out on a regular basis.
25s should be more comfortable (but slower) than 23s. You've got a bigger cushion of air between you and the road. They may rub mudguards though, if clearance is tight. Plus handling is marginally less sharp.....
It's really a case of seeing what works for you.