Whats is PCD?
Whats is PCD?
PCD stands for Pitch Circle Diameter and essentially is the measurement of how many wheel nuts or wheel bolts your vehicle has on each wheel and how far apart those nuts or bolts are placed in mm.
Why do wheels have 5 bolts?
This is because having directly opposed spokes causes problems with residual stress distribution as the casting cools and shrinks (this is also why cast iron hand wheels often have S shaped spokes). So 5 studs tends to be a more convenient number, if only for aesthetic reasons.
What is alloys PCD?
Alloys can have 4, 5, 6 or 8 holes and different measurements which is called the Bolt Pattern. Pitch Circle Diameter (PCD) is the diameter of that circle which passes through the center of all the bolts hole or wheel bolts or wheel rim holes or stud.
What is ET wheel?
ET Wheel Number Explained. ET stands for einpresstiefe, or for those whose German isn’t up to scratch, insertion depth. This is a number stamped on the rear spokes or mounting face of an alloy wheel. The ET of a wheel is the measurement in mm of how far the wheel’s centre line is from its mounting face.
What is JJ in rims?
JJ refers to the contour of the bead seat on the wheel, essentially its shape ( “J” indicates the shape of the letter J).
Are all 5 lugs the same?
The five lug pattern remains a common trait for passenger cars and light trucks, even in modern automobile manufacturing, but every company has a different approach. For instance, General Motors wheels had two common bolt patterns, 5×4-3/4-inch and 5×5-inch.
What are the different 5 lug patterns?
BOLT PATTERN CONVERSION CHART (MILLIMETER TO INCHES)
| 5-Lug Bolt Pattern Conversions (mm to Inches) | ||
|---|---|---|
| 5-110mm = 5-4.33″ | 5-112mm = 5-4.41″ | 5-114.3mm = 5-4.5″ |
| 5-115mm = 5-4.52″ | 5-120mm = 5-4.72″ | 5-120.7mm = 5-4.75″ |
| 5-127mm = 5-5″ | 5-130mm = 5-5.12″ | 5-135mm = 5-5.3″ |
| 5-139.7mm = 5-5.5″ | 5-205mm = 5-8.07″ | 5-150mm = 5-5.91″ |
How do you measure the PCD of a 5 stud wheel?
To calculate the P.C.D. of a five stud wheel or hub, measure ‘X’ from the inside of one hole to the outside of the next hole and multiply by 1.7012. The table below is a reference guide for some common sizes.
What is JJ in rim?
How do you measure a 5 stud pattern?
For uneven stud holes such as 5 stud patterns, measure from the center of one stud, to the furthest edge of the most opposite stud. For even stud holes such as 4 or 6 stud patterns, simply measure from the center of one stud, to the center of the opposite stud.
What are all the 5-lug patterns?
5-lug patterns consist of the following: 5×98, 5×100, 5×108, 5×110, 5×112, 5×114.3, 5×115, 5×120, 5×120.7, 5×127, 5×130, 5×135, 5×139.7, 5×150, 5×155, 5×165.1 and 5×205. 6-lug bolt patterns are manufactured for mid-size SUVs, full-size SUVs and trucks.
What are the different 5-lug patterns?
What is a 5 on 5 bolt pattern?
The bolt pattern of 5 on 5 inch that there are 5 studs and the distance across the bolt circle is 5 inches.
What is axle bore?
Center Bore This hole fits over the end of the axle when the wheel is bolted on. It is this fit between the axle seat and the center bore that truly holds the weight of the car, as lugnuts only serve to keep the wheel on the axle.
What is lug centric?
Lug centric wheels are centered by the torque of the lug bolts; rather than the center bore of the wheel and the hub flange. There are two distinct types of wheels found on today’s cars and light trucks. There are Hub Centric wheels and there are Lug Centric wheels. The most common wheels are Hub Centric in design.
