I started riding to work this week and plan to commute 2 days a week for now.
I'm currently riding on Conti 4000S 23mm tires and planning to go up to 25mm
(I think my Cervelo S1 should be able to handle 25mm tires)

What's a good tire for commuting ? My round trip is 55 miles and it would be good to get tires with good road-grip and longevity.

Thanks
V