GKs are fine until they start to wear out. I had loads of punctures on my rear in the space of 2 month and needed replacing
Defo would avoid for long riding / touring or replace after 3k miles.
I've done way more miles than that on a pair I have and they're still going strong! I think I am just exceptionally lucky from hearing other people's experiences. Definitely need replacing soon though, they're pretty much square.
@Josh started
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GKs are fine until they start to wear out. I had loads of punctures on my rear in the space of 2 month and needed replacing
Defo would avoid for long riding / touring or replace after 3k miles.