COLORED TIRE VALVE CAPS ON J-SERIES. Pontiac J2000 1982

For 1990-2009 cars

# COLORED TIRE VALVE CAPS ON J-SERIES

EARLY 1982 ('J' CARS) MAY HAVE EITHER CLEAR, GREY, OR DARK COLOURED TIRE INFLATION VALVE CAPS WHICH MAY HAVE A VERY FAINT BLUISH TINT IN DIRECT SUNLIGHT. THESE CAPS HAVE BEEN MOULDED WITH A MATERIAL WHICH FLUORESCES (GLOWS) IN ULTRAVIOLET LIGHT. THIS PERMITS A NEW MACHINE IN THE ASSEMBLY PLANT TO "SEE" THE VALVE CAP SO THAT IT CAN AUTOMATICALLY MATCH THE TIRE HIGH POINT MARK (ALSO FLUORESCENT) TO THE VALVE STEM, WHICH IS AT THE LOW POINT OF THE ('J' CAR) WHEEL. THIS MATCH MOUNTING PROCESS IS DONE TO HELP ELIMINATE VIBRATION BY PROVIDING THE ROUNDEST POSSIBLE TIRE/WHEEL ASSEMBLY. SHOULD AN OWNER OBJECT TO THE COLOUR, THESE CAPS CAN BE REPLACED WITH STANDARD BLACK CAPS FROM OTHER CARLINES WHICH ARE NORMALLY DISCARDED WHEN WHEEL TRIM AND VALVE EXTENSIONS ARE INSTALLED.

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