Guys, look at where the OP rides. Boston area rodes suck. I think NE winters just tear up the road, which then tears up your tires. I've had more flats within 50 miles of Boston than I've had everywhere else combined (and I bet I've ridden at least 20 times more miles away from Boston).
Don't get me wrong - I like the 4000S - I just think something a bit tougher is in order.
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