May. 30th, 2013

Tire issue

May. 30th, 2013 07:49 pm
johnridley: (Calvin vs bike)
My new road bike came with Michelin Dynamic Sport tires. Clearly they use these because they're the cheapest things they can get; they're basically just a paper thin skin over the tube. Fair enough, since everyone has their own favorite tire, there's no point in putting $80 tires on a new bike. I decided to see how long they would last.

Today the rear died. I was highly suspicious of it yesterday and intended to swap it out but I got involved with a car repair. Today on the way home I braked hard at one point, scuffed the rear, and within a mile I was getting "thump thump thump" - the tire had begun to bulge where the scuff happened. I let some air out of the tire and the bump bump bump mostly went away and I made it about 6 more miles, but then about a mile short of home due to the lower pressure I got a snake bite flat. I just walked it home from there.

So FWIW, a Michelin Dynamic Sport 700cX23 inflated to 110 PSI carrying a 180 pound dude lasts about 830 miles on the rear. The one on the front is barely worn. I swapped it out and put on two new tires anyway, I'll keep the front Michelin as a spare. The new ones are Nashbar Prima 2s made by Cheng Shin. They're on sale for about $12 right now, I should probably grab a couple more.

Michelin Dynamic Sport: one dead, one rotated out
Nashbar Prima 2 700cX23: new front and back

Odometer: 830 miles (white road bike)

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