Tires

Tires are a currency exclusive to Scrap Clicker 2, unlockable at x130 Stars through the Skill Tree.

Obtainment
Once unlocked, a Tire will bounce from the left to the right of the screen once every 60 seconds. Swiping it will collect it, initially awarding 1 Tire.

Tire yield is upgraded by upgrading the "More Tires" upgrade which gives a chance to permanently double the yield of Tires when collected.

Trivia

 * Tire production is exponential and the quickest increasing among all currencies, allowing some players to reach $$10^{500}$$ Tires within 2 weeks of introduction
 * Some have noted that Bricks, Steel Beams, Wrenches and Tires appear to be an evolution representing a growing and advancing civilization! This has led to speculation among the player base.