Lol...dude imagine that you lose one Pirelli tyre for any reason such as busted, stolen or anything beyond repair and then you sniff around the market to get a similar replacement but you can't as those were smuggled in and you end up putting General or some other brand to compensate or perhaps a different model of Pirelli...
Be wise..go for the authorised dealers and distributors which in case of Yokohama are the best choice..