Used a little but not far off as new pair of marathon winter plus snow and ice spike studded tyres. This type of winter tyre last for ages as they are usually used only on snow and ice, without much abrasion. I only used these for a handful of rides but no longer have the cargo bike. They are amazing in these conditions, can handle a lot more than my confidence could, just giving more grip on ice than a regular tyre on a regular road! The studs look rusty but they always get like that after not being used for a bit, and then clean up when used in snow etc. Certainly loads of life left in them.
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