When it comes to tire I would try online to buy if your local shop has crap . I m guessing you might not get great mileage out of it. I would be more concern to watch how it acts in rain etc.
Life's journey is not to arrive at the grave safely in a well preserved body,but rather to skid in sideways totally worn out shouting WHAT A RUSH, WHAT A RIDE.
"Life is a tragedy when seen in close-up, but a comedy in long-shot." Charlie Chaplin