For those of you with the enkei ekm3's
a hubcentric ring is neccessary for correct and safe fitment of aftermarket wheels.
since enkei cannot know which car their wheels are going on, they cannot make a wheel exactly fit every hub out there. they make the hole in the center of the wheel the largest possible and then use a hubcentric ring to take up the space between the wheel and smaller hubs.
if you do not use a hubcentric ring where one is needed, the impact forces the tire/wheel experiences will be absorbed as a shear force on the lug studs instead of the wheel and hub.
in other words, the wheel should fit snugly on the hub so it bears the weight of the car, rather than bearing the weight of the car on the lug nuts or lug studs.
it is very possible that if you do not use the correct hubcentric ring where it is needed, that you could shear all four or five studs off the hub and lose a wheel.
since enkei cannot know which car their wheels are going on, they cannot make a wheel exactly fit every hub out there. they make the hole in the center of the wheel the largest possible and then use a hubcentric ring to take up the space between the wheel and smaller hubs.
if you do not use a hubcentric ring where one is needed, the impact forces the tire/wheel experiences will be absorbed as a shear force on the lug studs instead of the wheel and hub.
in other words, the wheel should fit snugly on the hub so it bears the weight of the car, rather than bearing the weight of the car on the lug nuts or lug studs.
it is very possible that if you do not use the correct hubcentric ring where it is needed, that you could shear all four or five studs off the hub and lose a wheel.
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