WHAT IS RIMS PCD, OFFSET & CENTERBORE? DEFINITION & GUIDE TO CHOOSE SPORT RIMS

pcd offset centerbore sport rims guide definition

Many people are confused with those definition. PCD, OFFSET and CENTERBORE is totally important thing or definition when you are going to buy a new sport rims. Here is some explanation about it and some guide to choose a sport rims that suitable for your car.

WHAT IS RIM PCD, OFFSET & CENTERBORE? DEFINITION & GUIDE TO CHOOSE SPORT RIMS

WHAT IS PCD?

pcd definition diagram sport rim

The meaning of PCD? PCD stands for pitch circle diameter and is the diameter of a circle drawn through the centre of your wheel’s bolt holes. ]

P.C.D. is measured in millimeters and also indicate the number of studs or bolts the wheel will have. Proton Alloy Wheels are usually either 4×100: i.e. 4 bolt holes drilled through the centre of an imaginary 100mm circle.

About the holes & bolts attached, most Proton & Perodua Cars have 4 bolts, most U.S. passenger cars have 5 bolts while compact models sometimes have only 4 and pick-up trucks can have as many as 6 or 8. In contrast, some smaller French cars, including the Citroën 2CV, Renault 4 and some Peugeot 106′s and Citroen Saxos only have three which is same with Proton Tiara.

pcd offset centerbore sport rims mazda nissan toyota 316x500

RIM PCD OFFSET AND CENTERBORE OF MAZDA, NISSAN & TOYOTA (picture above)

If you can see the schedule above shows some PCD of cars. The vehicle with more holes like Land Cruiser is because of the SUV needs more strength to hold the rims.

Some aftermarket rim manufacturers do provide universal-fit rims which have elongated lug holes (or 8-10 holes which cover multiple bolt patterns) which will fit a wider-range of vehicles.

The most common PCD values are 100 mm and 114.3 mm. This difference arises from the manufacturers’ measurement convention – whether they are designing around metric values (100 mm) or imperial values (4.5 inches, i.e. 114.3 mm).

pcd offset centerbore sport rims bmw honda hyundai kia 318x500

RIM PCD OFFSET AND CENTERBORE OF BMW, HONDA, HYUNDAI, KIA(picture above)

 

WHAT IS RIM OFFSET?

The offset, measured in millimeters, can be negative or positive, and is the distance from the hub-mounting surface to the rim’s true centerline. A positive offset means the hub-mounting surface is closer to the outside edge of the wheel, i.e. the wheel wraps around the hub and brake hardware more deeply; a negative offset means the hub-mounting surface is closer to the inside edge of the wheel and wheel sticks outwards more than inwards.

Negative Offset wheels have their mounting face toward the rear of the wheel – powerful rear-wheel drive cars often have wheels with negative offset. This is the contributing factors of being a bigger “lips” rim.

 When selecting aftermarket wheels, a wheel with too little positive offset will be closer to the fender, and one with too much positive offset will be closer to the suspension components. Wheel width, offset and tire size all determine the way a particular wheel/tire combination will work on a given car.

To maintain handling characteristics and avoid undue loads on bushings and ball joints, the car manufacturer’s original offset should be maintained when choosing new wheels unless there are overriding clearance issues.

offset deginition rim image

Offset also affects the scrub radius of the steering and it is advisable to stay within the limits allowed by the vehicle manufacturer. Because wheel offset changes the lever-arm length between the center of the tire and the centerline of the steering knuckle, the way bumps, road imperfections and acceleration and braking forces are translated to steering torques (bump-steer, torque-steer, etc) will change depending on wheel offset. Likewise, the wheel bearings will see increased thrust loads if the wheel centerline is moved away from the bearing centerline.

 

WHAT IS CENTERBORE?

The center bore of an alloy wheel is the size of the hole at the back of the wheel which the hub fits into. To help the wheels to seat properly this hole needs to be an exact match to the size of the hub. Please refer to the first picture above this articles.

 Some factory wheels have a centerbore that matches exactly with the hub to reduce vibration by keeping the wheel centered. Wheels with the correct centerbore to the car they will be mounted on are known as hubcentric. Hubcentric wheels take the stress off the lug nuts, reducing the job of the lug nuts to center the wheel to the car.

Wheels that are not hubcentric are known as lugcentric, as the job of centering is done by the lug nuts assuming they are properly torqued down. Centerbore on aftermarket wheels must be equal to or greater than that of the hub or the wheel cannot be mounted on the car. Many aftermarket wheels come with “hubcentric rings” that lock or slide into the back of the wheel to adapt a wheel with a larger centerbore to a smaller hub. These adapters are usually made of plastic but also in aluminium.

Bagaimana pilih / beli sport rim yang betul dan sesuai? Harap artikel di atas dapat membantu.

Hope this information helps you to choose your sport rims properly. =)

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kdi

Team KDI suka berkongsi info, tips, gambar kereta modified, bodykit dijual terkini, trend DIY modifikasi. Forum bincang mengenai masalah kereta, cara repair sendiri dengan harga murah dan panduan kepada pembeli dan pemandu. ====================== Kategori hangat kereta dot info: + LATEST NEW CAR SPECIFICATION & VS COMPARISON + MODIFIED CAR + BODYKIT IMAGES GALLERY + TIPS + DIY + TANYA KERETA + MONTHLY BEST DEAL + PROMOTION + AUTOSHOW + EVENTS UPDATE ====================== Barang kereta terhangat: + Body kit, skirting, bumper, grille, spoiler, engine performance, sport rim, tayar ====================== Topic hangat: + Fuel consumption km/l, problem, service, test drive, review, price RM, kelab, kedai kereta ====================== Kereta baru terhangat: + Saga BLM FLX SE, Myvi 1.3 1.5 SE, Viva, Alza, Exora, Preve, Vios, City, Civic, Corolla Altis, Camry, Accord, Hilux, Livina, Triton, D-max, Inspira lancer GT ====================== Pecah fiber pecah gelas, sudah baca harap komen dibalas. Terima kasih! =)

16 Responses

  1. iz says:

    KDI..
    Good job and good info for our KDI readers..Congratz! =)

  2. Niemans says:

    Thank you KDI, the response is immediate with an informative article.

  3. kej@m says:

    lme dh aku cr info nie…
    dlu ade bce kt website lain..tp xigt kt mne…
    nsb baik kt sini dh kuar jgk…

  4. kentos says:

    mahu tahu ‘offset’ rim alloy OEM saga BLM & ‘offset’ berapakah sesuai jika mahu rim sukan kelihatan sama rata dengan badan luar saga BLM? harap dapat memahami maksud saya..

  5. kdi says:

    kentos, yang tu kena gi kedai rim tanya dorang. Sebab kalo offset pon sebenarnya x menunjukkan 100% tayar boleh sama rata dengan badan luar. Sebab die ade lagi satu faktor iaitu rim flange yang terjojol keluar tu. Kalo lebar flange tu, terkeluarla rim tu. Pendek kata, cuba tanya kedai sport rim dulu tengok macam mana.

  6. kentos says:

    OK, terima kasih KDI.. kalo tahu offset OEM saga BLM tu bolehlah agak-agak offset yang sesuai.. sbb nak cari rim sukan yang jual2 kat laman web nie.. jadi info yang diberikan contoh offset 35 @ 40.. kalau sudah tahu bolehlah agak agak..huhu

  7. Mahes says:

    Ada tak sesiapa ada info tentang sport rim utk Mahindra Scorpio 5 lubang. I would like to know what is the ideal offset, PCD & centrebore.
    Mana nak beli sport rim di K.L , Klang & Seremban for my Scorpio??

  8. grease monkey says:

    very informative,keep it up!

  9. Norman says:

    Saga tak silap offset 46mm PCD 100

  10. kentos says:

    Terima Kasih bro. Norman.. pendapat saya BLM tak boleh pakai JJ besar sangat hanya JJ6-6.5 & offset 40-45.. boleh sangkut tayar depan kat spring.. nak lowerd kena main offset kecil/JJ kecil.. kalo besar tayar terkeluar kena mudguard pula.. kena uji kaji benda nie.. kalo salah betulkan ye…

  11. gua nak tau la kedai sport rim kat klang tu kat mn?

  12. Zam says:

    Salam…

    Kepada otai-otai RIm diluar sana…
    saya memerlukan sedikit nasihat dan tunjuk ajar…
    saya pakai kancil ngan knuckle L5 dicc brake dpn/blkg…
    skarang ni saya pakai RIM 14 inci… berhasrat nak tukar ke 15 inci…
    so… masalah saya ialah ada ke rim 15 leh masuk ?
    ada org kata PCD L5 ni sama kancil nyer iaitu PCD110…
    ada jugak kata L5 ni PCD100… mana satu betul?…
    jadi, kalo otai2 rim boleh bantu, sila lah bagi nasihat…
    kalo conform PCD 100 utk knuckle L5, maknanya saya leh cari macam2 patern rim…
    tapi kalo PCD110… maknanya amatlah terhad jenis rim nye…

    Sila beri tunjuk ajar…

  13. Zam says:

    Salam semua… kt rawang rege rim n tayar murah2 … ;)
    tayar 15 inci silverstone rm130 je… aku ikut member tuka tayar hr tu…
    balancing+alignment free…
    adjust chamber RM15-20… ;)
    pandai2 la cucuk angin bodek2 cina2 kedai tayar tu… ;)
    bayar kedit kad xde charge… ;) guna atm pon boley… ;)
    rim pon murah2… ;) banyak jugak pilihan…
    kedai tu sebelah betul pizza hut bandar rawang…
    kalo rajin leh pusing2 kawasan sekitar…
    x kurang 5 buah kedai sportrim ada berhampiran..
    tu pasal diorang compete harga sapa paling murah…. ;)

  14. shawn says:

    salam bro..

    nak mintak panduan skit.. plan nak tukar myvi oem rim kpd 16″

    so bile tukar ni, ape lg yg perlu diubah? means kene lowered ke tambah pape ke..

    kalau x lowered nampak pelik x? sbb penah tgk kete tuka rim bile x lower nampak cam pajero la plak…

    then bile lowered tuh nak pilih spring mcm mane? igt xnak la rendah sangat cume sedang2 sdp mate memandang tu ok lah…

    n bile kite tuka rim ni, ape lg process yg perlu follow up? atau ape lg mende yg kene tambah? spacer ke ape ke..

  15. wanche says:

    Slm all readers…need to ask sumthing…how to read e.g: 18x9jj…..yg 18 tu size of rims…but 9jj tu stand for what? Mohon pencerahan kpd otai2….

    #ilmu #automotif #pentingbaii

  16. kdi says:

    9jj tu kelebaran tayar. Makin banyak jj makin lebar. 9jj lagi lebar dari 8 jj. Tu yg buat tayar terkeluar tu..

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