Regardless of what the legal tyre tread depth limits are, we would always advise that your tyres are not allowed to wear down beyond 2mm for safety reasons. For example, the more tread you have the better the grip and the better they will be for clearing water from under your tyres. To help you with this you can request a tyre tread depth gauge here which clearly displays a 2mm depth indicator. Tyre pressure requirements can be found in the owner's handbook, or they might be stamped onto a sticker near the petrol filler cap. Checking your tyres should be a routine part of your bike maintenance.

