轮毂术语 （一）
Backside setting/Back spacing - The measurement from the mounting pad to the inner
edge of the wheel.
后距：安装盘到轮毂内侧轮缘边的距离。
Bead seat - The position where the tire rests and seals on the inside of the rim. 胎圈座：轮辋上安放轮胎的地方。
Bolt Circle - The diameter of an imaginary circle drawn through the center of each lug
hole. Also referred to as the bolt pattern.
节圆：一个假想的圆的直径，该圆的圆周经过每一个螺栓孔的中心。也叫螺栓模式。 Center Bore - The hole in the center of the wheel machined to match the hub of specified
vehicles with hub-centric wheels and machined to a generic size with lug centric wheels.
中心孔：在轮毂的中心加工的一个孔。在以中心孔定心时与轮轴适配，在以螺栓孔
定心时为一通常尺寸。
Hub centric - The center bore hole of a wheel matches the hub diameter of the vehicle.
This centers the wheel via the center hole rather than the lug nuts.
轮轴定心：轮毂中心孔与轮轴直径适配。通过中心孔定心，而不是通过螺栓孔定心。 Hub centric ring(s) - A nylon insert for the center bore of the wheel that keeps the wheel
concentric to the vehicle's hub during installation.
轮毂中心环：一个嵌入轮毂中心孔的尼龙环，在安装时使轮毂与轮轴同心。 Load rating - The maximum weight that the wheel is designed to support. To determine
load rating requirements take the gross axle weight ration and divide by 2. 载荷：轮毂的设计最大负载。等于轮轴总承重除以2。
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轮毂术语 （一）
Lug centric - When the wheel is centered by the bolt holes/ lug nuts of the wheel, rather
than by the center bore. Lug centric wheels should be balanced from the bolt holes. 螺栓孔定心：轮毂由螺栓孔确定中心，而不是由中心孔。通过螺栓孔来平衡轮毂。 Make - The brand name of the vehicle. For example, Ford, Chevrolet, Honda. 品牌：汽车的牌子。如福特、雪佛来、本田。
Model - The particular style name of the vehicle. For example, F-150, Corvette, Civic. 型号：汽车的某种类型的名称。如F-150、巡洋舰、林肯公民。
Mounting pad - The surface area on the back of the wheel's center that contacts the brake
drum or rotor surface.
安装盘：轮毂中心背部表面与刹车鼓或转轴表面接触的部分。
MSRP - This is the manufacturer suggested retail price per wheel. The dealer sets actual
retail pricing.
制造商建议零售价：制造商建议的轮毂零售价。实际零售价由零售商决定。 Negative offset - When the mounting surface is closer to the disk/drum (Inside) of the
wheel. Or the mounting pad is behind the centerline of the wheel. This type of wheel is commonly referred to as a deep-dish wheel. This offset is common in older vehicles and many of today's trucks and will bring the wheel/tire combination out away from the vehicle.
负偏距：安装盘表面更靠近刹车盘/刹车鼓。或安装盘表面在轮毂中心线内侧。这
种轮毂常被称作深盘轮毂，多用于旧式汽车及现时的卡车，使轮毂/轮胎总成探出在汽车外面。
Offset - The offset of the wheel is the distance from the mounting pad to the centerline
of the wheel.
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轮毂术语 （一）
偏距：安装盘到轮毂中心线的距离。
Positive offset - The mounting pad is forward of the centerline of the wheel, towards the
street side of the wheel. This is common in most front wheel drive cars and some newer trucks. Generally speaking a positive offset wheel brings the wheels closer to the center of the vehicle.
正偏距：安装盘表面在轮辋中心线外侧，接近轮毂的装饰面。常用于绝在部分前轮
驱动的轿车和新式卡车。总的来说，正偏距使轮毂更接近汽车的中心。 Plus 1/ plus 2 sizing - A concept to improve handling and performance through the
mounting of lower profile tires to wheels that are 1″, 2″ or even 3″ greater in diameter. The overall ride height remains the same.
尺寸加1/加2：提高车轮操作性能的一种方法，将轮毂的尺寸（胎圈座直径）加大
1″、2″、甚至3″，然后安装截面高度更小的轮胎，但车轮的总高度（轮辋半径+轮胎截面高度）不变。
Rim width - The width of the custom wheel, measured from bead seat to bead seat not
edge to edge.
轮辋宽度：常用轮毂的宽度，从胎圈座至胎圈座，而不是从轮缘边至轮缘边。 Rim Diameter - The overall diameter of the wheel's bead seat, not the diameter of the
rim edge.
轮辋直径：轮毂胎圈座的直径，不是轮缘边的直径。
Rim flange - The outermost edge of the wheel's rim that the clip-on weights attach to on
most wheels.
轮缘：轮辋的最外侧边缘，绝大多数轮毂的平衡块贴在轮缘上。
Safety bead - The raised area circling the rim of the wheel and located slightly inward
from the bead seat.
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