Alloy Wheel Sizing
by admin on 24/03/10 at 10:48 am
When a set of alloy wheels, you need to look at some of the wheels are interested in important details will fit your car purchase. First, PCD, or circle diameter size of the socket, the other is offset as endothelin German word ‘Einpresstiefe (known as’ insertion depth), translated. The PCD (pitch circle diameter) are you?
Think of your car wheel, especially motor vehicle wheel bolt holes. Now imagine someone has taken a compass and the wheel center has developed a circle, passes through the bolt hole centers. Diameter pitch diameter, and was calculated in millimeters.
Although strictly only circle diameter PCD, an aluminum alloy wheels set the PCD specification will tell you to bolt hole refers, usually number 4 or 5.
So, if there is 100 mm, and a 4 bolt holes, PCD 4×100 will read the specification of a wheel diameter.
However, it does not mean a car’s 4×100 4×100 PCD polycrystalline diamond wheel to a wheel of a car a few. This is because the socket can be different sizes. So what is the size of the tap
Supply of raw material in the wheel Center, which on and you find the wheel bolt hole is located.
In the after market alloy wheels, a big wheel at Jack in the tap hole. This ring has a socket for you which slot to fit on the wheel right to increase the size of the tap hole alloy wheels to accommodate the need to use to resolve.
A hub is not jack it right equipment, though it will be difficult in places, maybe in and bolts. It is not desirable is another reason, though. The purpose other jack up the vehicle carrying the weight. If it bolts right by the car’s weight does not fit all, and not designed to do this through. They are closer, if you’re just car brakes too hard or too serious is driving, it is not clear!
You may find that the wheels out of balance. So offset (east) is
Offset measurement in millimeters, wheels (between the middle classes, but you face) and turn the bolt face (this is the same as that of the outer edge) is not.
There are two different types of offset. A positive offset, the wheel center to the outer edge of wheel bolts close to face, it usually is the most common street cars. And one negative, the wheel center bolt from the inner wheel is about to face.
So if you put your car, there is a large positive offset than the previous one, will sit in the front wheel car wheels. On the other hand, if small positive offset, and also to offset the negative turned positive, the front wheel of the car will sit.
Aim to improve performance, you wheel and tire grip and traction more widely to be, but in order to do this, you need a small wheel offset so that the extra width of the wheel arches. If you go to offset a wider range of cycles is too high, may tire and wheel arches of internal links, causes damage to tires and arch. Wheel size
When buying a new set of alloy wheels for a current equal to the size of wheels, you 13 “alloy wheels will replace 13″ steel wheels selection is easy.
Width for better performance but you can change and tire profile. The best of efforts, about matching your current wheels and tires outside diameter. Specifications out side you can use your tires can go to work. It looks something like 165/80/R13.
We wheel and tire can calculate the total width is as follows:
The first number is the width of the tire, the other extreme width is expressed as a percentage, 80% of the height of 165 mm. () 165×80 / 100 = 132 mm. The tire section height, which is required either on the high side is multiplied by the two wheels. 132×2 = 264 毫米. This data can be converted to inches just over 25. 4. 264/25. 4 = 10. 39. “Then we last number, 13, who represents the wheel diameter = 23.39 13 10.39 add ..” Therefore, a total of 23 wheel and tire width. ”
If we study a 15 “size 245/50/14 tires wide, made the same calculation:
() 245×50 / 100 = 122. 5 mm. 122. 毫米 5×2 = 245. 245/25. 4 = 9. 9.63 63. 14 = 23.65. ”
Thus, while broad, low-profile tires, a new era, an old-inch wheels and overall width of the tire makes a few scores. Conclusion
Finally, unless you second-hand wheels and tires, or they pass you, you are likely to buy them from a professional shop in person or online, whether are planning to buy. The best advice is to just ask an expert, they will know exactly delivery PCDs, what, and offsets and wheel / tire size will fit your car.
