probably about 6 months of 100/200 miles a week but they I bought them 2nd hand
I'm not expert so take my opinion with a pinch of salt but to me it looks like its finished. The brake track looks like it'd peeling away and those patches look as though they are regions which have worn through.
@Hovis started
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probably about 6 months of 100/200 miles a week but they I bought them 2nd hand