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Schwalbe Stelvio (406x28) starting to split along seam in tread
I noticed this split on the tread after a ride on which I can recall having hit a few hard bumps. The tire is old (ca. 2003), but had not been ridden until last year when I decided to "use it or lose it". Tire was a bit narrow for the front of my bike, given the weight, but it ran well at 100psi for about 2400 miles until I noticed this split. I suspect the old tire cords are not as strong as they once were, and a hard bump that might normally have been handled without damage was too much for this old tire. One can also see a few non-fatal sidewall nicks in the lower left of the photo. The tire has been replaced.

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