Half a croissant, on a plate, with a sign in front of it saying '50c'
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Depth Star

 Has the advantage* of working on any tire
 
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*Over other similar ideas in this category.

Mounts in the wheel wells and measures tread depth using laser and acoustic measuring thingamajigs. Activates a yellow LED on the dash when the tread starts wearing low, and a red LED when a low tread spot becomes bald.

—21 Quest, Dec 22 2012

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       Anyone swanky enough to be sporting this device probably replaces their tires every month anyway.
—bungston, Dec 22 2012
   

       // flack //
  

       Sp. "Flak", Abbrev. "Fliegerabwehrkanone", "Flugabwehrkanone", "Flugzeugabwehrkanone".
  

       Or words to that effect.
—8th of 7, Dec 22 2012
   

       Catchin' flak from frick and frack is part of the daily grind at the HB.
—21 Quest, Dec 23 2012
   


 

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