The Brabham BT54 Formula One racing car used tires with a network of around how many distributors and retailers?
Brabham BT54:  The car was powered by the BMW M12 4cyl turbo engine (generally agreed to be the most powerful engine in Formula One at the time) and used Pirelli tyres. Pirelli:  It is present in over 160 countries, has 19 manufacturing sites in 13 countries and a network of around 12,500 distributors and retailers.
12,500