[AceyMan]

>>>If you don't wear a helmet, don't worry about it, it doesn't mitigate that much risk. The exercise benefits of biking do way more to increase your life expectancy than skipping a helmet does to reduce it.

I'd read somewhere that up until some fairly high speed (40 kph?) that a helmet doesn't measurably lower the risk of injury. (Citations, pro or con, welcome!)

And as the Vox piece points out, merely wearing a helmet induces drivers to reduce their caution, making the need for a helmet something of a self-fulfilling prophecy.

I still wear my helmet when I commute or do longer rides but I'm beginning to put my toe in the water by going helmetless for short trips to lunch, the nearby park, etc. It may be my self-awareness about going sans helmet talking, but I'd almost swear that when I ride 'au naturel' drivers make more eye contact and generally seem to acknowledge my presence more than when I'm fully kitted out.

Also: Schwalbe Marathons are the shiznitz. I have 42-622 Marathon Supremes on my new urban bike, and they grip like ... something really sticky ... and are like pillows, to boot (esp. coming off 25-622 road tires). More dough, but worth it for me. Zero flats in over two years, btw.

(me: occasional bike commuter here in West LA for about eight years)

[pilom]

Second vote for the Schwalbe Marathons. I got fed up with fixing a flat once a month when I lived in Pittsburgh and biked everywhere. Replaced my tires with Marathons and had to replace the tires for wear after a couple thousand miles before I patched another flat.