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jasongray5
3rd April 2010, 05:20 PM
Ive found some nice alloys close to me, and would like your opinions on weather they are a good bargin and the the right offset?
CLICK! (http://cgi.ebay.co.uk/15-WESTFEILD-CATERHAM-KIT-CAR-WHEELS_W0QQitemZ220582540053QQcmdZViewItemQQptZUK_ CarParts_Acc_Wheels_tyres_Trims_Car_Rims_ET?hash=i tem335bbe7315)

Cheers guys

deezee
3rd April 2010, 05:37 PM
The correct offset is around 38 ish. So these are going to stick out an additional 15mm. Its hardly going to upset anything. Bear in mind that the fibreglass rear arches from Triton / Saturn stick out 25mm further than the "correct" offset wheels anyway. So yours would just fill the arches more.

HandyAndy
3rd April 2010, 06:09 PM
:eek: I personally couldn,t say the word "bargain" :eek: but then again you know how tight I am :D

For a similar cost "Halfrauds" are doing 4 wheels with tyres ;)

cheers
andy

Big Vern
3rd April 2010, 06:14 PM
At 7 inch wide you'll need an ET of 41 or maybe even 44 to get the correct offset ie centre line of the wheel rim in the same location as the 'book'.
I have a nice set of mk5 RS 2000 alloys for sale, which are 6x 15 et41, and would certainly suit.

HTH BV

geeman
3rd April 2010, 06:16 PM
i got these (http://www.halfords.com/webapp/wcs/stores/servlet/product_storeId_10001_catalogId_10151_productId_72 3181_langId_-1_categoryId_165649) from halfords for £230 about 2 months ago. Also its currently £260 without their"fit kit"...

deezee
3rd April 2010, 07:42 PM
At 7 inch wide you'll need an ET of 41 or maybe even 44 to get the correct offset ie centre line of the wheel rim in the same location as the 'book'.
I have a nice set of mk5 RS 2000 alloys for sale, which are 6x 15 et41, and would certainly suit.

HTH BV

Why would you need the wheel to sit 3mm closer to the car? The offset is a measurement to the centre of the wheel and is irrespective to the actual width of the wheel, be it 7 inches wide or 6 inches.

jps
17th January 2013, 02:31 PM
Why would you need the wheel to sit 3mm closer to the car? The offset is a measurement to the centre of the wheel and is irrespective to the actual width of the wheel, be it 7 inches wide or 6 inches.

Surely offset increases or decreases as width of the wheel changes, assuming that the 'outside' end of the wheel stays the same - otherwise offset is meaningless?

E.g. if a wheel is 100mm wide and the offset is 40mm it means the 'spoked bit' of the wheel is 10mm thick (i.e. the mounting face is 10mm inside the wheel - but on the outside edge). If the same wheel is 200mm wide and the 'spoked bit' of the wheel is 10mm thick then the offset would need to be 90mm??

*numbers made up for illustrative purposes...

voucht
17th January 2013, 05:19 PM
Surely offset increases or decreases as width of the wheel changes

Sorry JPS, but I think you are mistaken, and I disagree with that.
The offset of a wheel is given by a manufacturer by the "ET".
ET is is the distance between the middle longitudinal plan of the wheel and the plan of the wheel's face against the car's hub.

1585

You can have a 3'' wide wheel or a 9'' with an ET38, the offset will still be the same. Just the wheel will be wider, so wider outward AND inward

Hope I'm clear in my explanations :p

jps
17th January 2013, 06:39 PM
Sorry JPS, but I think you are mistaken, and I disagree with that.
The offset of a wheel is given by a manufacturer by the "ET".
ET is is the distance between the middle longitudinal plan of the wheel and the plan of the wheel's face against the car's hub.

1585

You can have a 3'' wide wheel or a 9'' with an ET38, the offset will still be the same. Just the wheel will be wider, so wider outward AND inward

Hope I'm clear in my explanations :p

Ah ha!!!!! No idea why I was being so thick!!!

I was thinking that the offset was measured TO the centreline, rather than FROM the centreline. I was also making the assumption that wheels were made wider by just adding width to 'the inside' rather than widening inward and outward...

Silly me!

Not Anumber
18th January 2013, 12:44 PM
I want to get hold of a spare wheel for long journeys as I dont trust the spray and pray cans.
Applying the knowledge above, do I need to look out for a Sierra (or other rwd Ford) steel wheel or could i get away with using something from a Focus or Mondeo ?

alga
19th January 2013, 12:34 AM
Any 4-hole Ford wheel should do, including ones from Escorts, Focuses and early Mondeos. From 2001 Mondeo switched to 5-lug pattern.

Not Anumber
20th January 2013, 12:44 PM
Thanks, no excuse for me not to pick one up and start making that spare wheel bracket when the snow clears.

Appologies for highjacking the thread.:o

iDriver
23rd January 2013, 11:22 AM
As some of my questions are answered in this reenergised thread I hope the OP doesn't mind me jumping in with a question.

I have obtained a rolling chassis for a now out of business Venom GT2 and rather than reinvent the wheel (no pun intended) I am planning on modifying it to a roadster style all be it a few inches wider and longer than the book.

This rolling chassis has obviously got heavier and different shape wishbones and backplates to the book and so wheels are not going to be a simple case of copying what others have fitted.

The hubs and brakes are Granada Scorpio units and the rolling chassis came with some 5 hole steel wheels on the front and 5 hole alloy wheels on the rear. The wishbone setup will not allow the smaller steel wheels from the front to fit on the rear but the larger rear wheels will fit on the front.

SO.... Question.. Given that the rear alloys look to be the standard Granada Scorpio units. would after market alloys that claim to fit the Granaga be guaranteed to fit and have the same internal clearances (i.e. will they clear the wishbones) or do I need to measure the original Granada alloys and start from there?

rpjg1975
23rd January 2013, 12:21 PM
I would think u will be safe doing that. Also I believe later Mondeo or later shape focus will also fit those hubs. Would be worth checking the specs or someone may be able to clarify the exact figures

Russ

TSM Locost
23rd January 2013, 02:38 PM
This site will give you details of wheel spec for you to compare, eg stud PCD pattern, centre hole and offset.


http://www.alloywheels.com/Alloy-Wheels-Fitment-Guide