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Offset troubles.... (Now with offset calculator link)

What does PCD stand for? Which wheels fit what? Why you'd need spacers & how they alter your offset (ET).

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Offset troubles.... (Now with offset calculator link)

Postby Oli » 04 Mar 2008 02:22

ok three different wheels

7 inch wide ET 16

7.5 inch wide ET 15

7.5 inch wide ET 22

trying to work out how they will sit against the arch, from my working out i think ive got it that....

the 7.5 et 22 will sit .5 mm further out that the 7 inch ET 16? and the 7.5 ET15 will sit 7.5mm further out than the 7 inch ET16?

anyone confirm thats right? or am i talking nonsense? :lol:

never thought finding a set of wheels would be so tricky, hopefully worth it tho, if they fit right.

:D
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Postby leg0man » 04 Mar 2008 02:35

by doing some quick maths i get that the ET22 will sit .25mm further out, and the ET15 will sit 7.25mm further out

here's what i've done:
7" x25mm/in = 175mm
87.5mm centre of wheel + 16mm offset = 71.5mm to outer edge

7.5" x25mm/in = 187.5mm
93.75mm centre of wheel + 15mm offset = 78.75 to outer edge
93.75mm centre of wheel + 22mm offset = 71.75 to outer edge
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Postby leg0man » 04 Mar 2008 02:40

there're actually 25.4 mm per inch, but that should close enough for you to pick a set :D
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Postby Oli » 04 Mar 2008 02:42

cheers mate, thought i war working it out right, but couldnt be sure.

ta.
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Postby zerolux » 04 Mar 2008 04:50

the offset calculator is a whores best friend.

http://www.1010tires.com/WheelOffsetCalculator.asp :lol:
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Postby Oli » 04 Mar 2008 11:08

now thats exactly what i need,

spot on mate, very helpfull link indeed!!

8)

cheers, Oli
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Postby albinoDUB » 19 Mar 2008 17:58

What a link!!!!

well done that man
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Postby chapel » 08 May 2008 14:59

I prefer this calculator

it allows you to put different wheel widths, diameters, offsets WITH tires and it's all graphical like ;)

http://www.bigcustomwheels.com/rt_specs.jsp
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Postby Cru Jones » 28 Jul 2008 03:07

here is handly lil chart for measuring wheels with unmarked offsets

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Re: Offset troubles.... (Now with offset calculator link)

Postby peter.h » 07 Oct 2009 21:05

i thought i was good a maths but i dont think i will ever understand how this works! :cry: :retard: :( :thumbdown:
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Re:

Postby STEALTH K3 » 05 Feb 2010 16:38

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Re: Offset troubles.... (Now with offset calculator link)

Postby yun » 08 Dec 2010 05:50

thank you
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Re: Offset troubles.... (Now with offset calculator link)

Postby MySweetf » 16 Sep 2011 08:21

it allows you to put different wheel widths, diameters, offsets WITH tires and it's all graphical like...
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Re: Offset troubles.... (Now with offset calculator link)

Postby peterwyman » 13 Jan 2012 13:31

I need some offset help too.I picked up a set of steel wheels cheap Everything fits: 15" X 6" rims, 5 X 100mm bolt pattern, but the offset is 3/8 inch different, towards the inboard side of the hub.There's plenty of clearance, the tires won't rub on anything. Does this difference in offset matter?
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