Is it difficult to install the product on to bike?
No, it just takes a few seconds to attach the generator and head light in place. No tools is needed, hands will do.
Will the generator wear out the bicycle tyre?
No, because the generator rubber wheel is in contact with the front surface of the tyre, not on the soft sides of the tyre, it never gets your tyre damaged.
Will the generator slow down the tyre?
No, it gives very little friction to the tyre so it does not slow down your tyre.