wheel pcd and offset explained

THINGS YOU SHOULD KNOW ABOUT BEFORE PURCHASING WHEELS

pcd

THE TERM PCD STANDS FOR (PITCH CIRCLE DIAMETER) AND IS THE DIAMETER OF A CIRCLE DRAWN THROUGH THE CENTRE OF YOUR WHEELS BOLT HOLES. PCD IS MEASURED IN AND ALSO INDICATES OF STUDS OR BOLTS THE WHEEL WILL HAVE. ONE OF THE MOST COMMON FITMENT HAS 4 STUDS AND A PCD OF 100MM, HENCE THE FITMENT 4X100. CHECK THE FITMENT CHART I HAVE PUT ON MY SITE  TO CHECK THE FITMENT OF YOUR CAR.

OFFSET

EVERY CAR REQUIRES A UNIQUE OFFSET. THIS IS WHERE THE OUTSIDE OF THE WHEEL NEEDS TO BE IN RELATION TO THE BODYLINE OF THE VEHICLE REALISTICALLY YOU CAN GO UP TO 10 MM OUTSIDE THESE RECOMMENDATIONS,BUT ALWAYS  CHECK WITH THE WHEEL FITMENT CHART ON MY SITE .

REASONS FOR FITTING ALLOY WHEELS

THE TWO MAIN REASONS FOR FITTING ALLOY WHEELS, ARE TO ENHANCE STYLE, AND REDUCE WEIGHT.
ALLOY WHEELS ARE A LOT LIGHTER THAN THE EQUIVALENT SIZE OF STEEL WHEELS, SO THE UNSPRUNG WEIGHT OF THE CAR IS REDUCED. THEY ALSO LOOK 10 TIMES SMARTER THAN A STEEL WHEEL, EVEN WITH A FANCY PLASTIC TRIM COVERING IT.

SPIGOT

THE SPIGOT IS THE BIT IN THE CENTRE OF THE HUB THAT YOU REST THE INSIDE CENTRE OF THE WHEEL ON WHILST ALIGNING THE STUDS AND SCREWING BACK THE WHEEL NUTS. ON GENERIC AFTER MARKET WHEELS, THE SPIGOT HOLE INSIDE THE WHEELS IS A LOT BIGGER THAN THE SPIGOT ON THE CAR. SO WHAT YOU NEED TO DO IN THIS CASE IS FIT SPIGOT LOCATING RINGS. THESE ARE JUST RINGS OF ALUMINIUM OR HARD PLASTIC, THAT FIT OVER THE SPIGOT ON YOUR CAR AND THEN HAVE A PROPER FIT WITH THE SPIGOT HOLE ON THE WHEEL.THESE ARE VERY EASY AND INEXPENSIVE TO GET AND RANGE FROM 99P TO £10 OFF EBAY.