90glfalcon

what is the stud pattern / offset for a 1990 gl falcon. im lookn into gettn som rims. thanx

Dellboy999

offset = 0 (zero)[or as close as possible]
PDC= 5 x 114.3

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RAPTOR

That's PCD (Pitch Circle Diameter) and is the same as 5 x 4.5"

Offset is zero if wheels are stock width, it'll be different of they are wider which I'm guessing they would be!

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Dellboy999

PCD i always type that wrong

So if you have 7" rims with zero offset, that means 3.5" inches either side of the centre of the rim, now assuming that 3.5" is the inside measuremnt allowable, and you goto 8" wide rims, then the offset would be 1" , now is that a positive or negative offset or how is it stated when shopping for rims ??

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RAPTOR

Yep, with you so far

OK

Nope. It'd be 1/2" measured from the wheel centreline (4") to the mounting face (3.5")

Negative as the mounting face is inboard of the wheel centreline.

Though if you have followed this you'll probably know more than the guy at the tyre shop and just end up confusing them.

See here; http://www.tirerack.com/wheels/tech/offset.htm

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Dellboy999

OK so to go wider (and stay within insurance limits) you would be looking at 8" wide rims with a PCD of 5x114.3mm or 5x4.5" and a negative offset of around 10mm or so.

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RAPTOR

Only if this is correct;
I didn't think stockies were 7" but you've got the right idea.

Happy shopping :)

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Aaron_EF8

Could this thread be made a sticky, or added to the other FAQ thread? This question comes up every month or so.

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95 EF Fairmont 5.0 - Heritage Green - 4 Speed auto with AU S5 - 3.23LSD - 17x8" LWT Wheels - King Superlows - 76mm Cobra MAF - 65mm throttle - BPT Underdrive Pulley Kit - 3" Mandrel-bent Lukey exhaust - Tinted Windows - MP3 CD player - White faced dials.

117rwKw - 15.47@89.9MPH

Saltez

i've got some 17" CSA edge mags that i took off my ea gl just sitting in the shed if ur interested

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