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Discussion Starter · #1 ·
Can anyone help me out with some advice regarding offsets? I'm looking at a set of RS6 replicas. The Offset on them is ET45. I can't rememeber if a higher ET number means the wheels will stick out more or less.

1) Can anyone confirm the offset on a set of standard Interlagos and explain to me the difference.
2) What's your opinions on a ET45 offset on the Roc? Will the wheels sit nice and wide or will they be swallowed up deep in the arches?
3) What's the ideal offset in your opinion for a nice wide look that doesn't poke too far out of the arch (and hence make them illegal)?

Cheers for your help guys.
 

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Discussion Starter · #5 ·
I see. :oops:

Any answers to my other questions?

1) Offset on std Interlagos?
2) What's your opinions on a ET45 offset on the Roc? Will the wheels sit nice and wide or will they be swallowed up deep in the arches?
3) What's the ideal offset in your opinion for a nice wide look that doesn't poke too far out of the arch (and hence make them illegal)?
 

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Interlagos are 8J. My front wheels from rimstyle are 8.5J and the rears are 9.5J and sit right at the edge of the arch. If I were you I would speak to some experts. Give rimstyle a ring discuss what you want, they will give you the offset and the rim width required. If you want to go with them great, if not at least you know what you need! ;)
 

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Discussion Starter · #7 ·
imitebeurda said:
Interlagos are 8J. My front wheels from rimstyle are 8.5J and the rears are 9.5J and sit right at the edge of the arch. If I were you I would speak to some experts. Give rimstyle a ring discuss what you want, they will give you the offset and the rim width required. If you want to go with them great, if not at least you know what you need! ;)
What does the J in 8J mean?
 

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Alloy Wheels Explained

P.C.D. (Pitch Circle Diameter) explained...

This is the diameter of an imaginary circle drawn through the centre of the bolt holes. The P.C.D. of the wheel should match the P.C.D. that your car came with as standard.

P.C.D. is measured in mm. e.g: 4x100 means the wheel has 4 bolt holes and the diameter of the imaginary circle through the bolt holes is 100mm.

The Wheel Offset explained...

The offset determines how far under the arch or how far towards the outer arch a wheel will sit. Each car has its optimum offset and a range within which the offset can be for the wheel to fit the car properly.

If the offset is too low for the range allowed, the wheel could stick out from the side of the car, if too high from what it should be the wheel may catch on the suspension or bodywork as it will be too far under the car.

This is due to the fact that if you put a wheel on your hub with a higher offset than before, the wheels bolting face will have to move further under the car to meet the hub, in extreme cases causing the wheel to sit too far under.

If you take a wheel and cut it in half and draw a line down the centre of the width of the alloy wheel the offset will be the distance between the back face (mounting face) of the wheel and the centre line that you have just drawn.

The offset is commonly shown as the letters ET followed by a number, eg: ET49. The offset is always measured in mm and can normally be found stamped on the back of the wheel or behind the centre cap (if fitted).

Using spacers to change the offset�

If the offset of a wheel is too high for your vehicle, in most cases spacers can be used to reduce the offset, pushing the wheel further out to make it sit correctly in relation to the cars bodywork and arches. Rimstyle.com automatically checks if spacers will be required, and if they are, it will tell you. This allows you to fit wheels to your car that aren�t initially made in a direct fit, widening your choice of wheels and is completely safe and road legal to do. However, if the offset of a wheel is too low compared to the offset your car needs, there is no way of rectifying this as they will already sit too far out from where they should be and can�t be brought back under the car.

Wheel Width and Diameter explained...

The alloy wheel size is shown as follows: Wheel diameter x Wheel width - e.g: 15x6.5J
The width is the section between the tyre mounting flanges on the wheel / The diameter is the height of the wheel

Wheel Centre Bore and Spigot Rings explained...

This is the diameter of the centre hole in the back of the wheel. It is crucial that the centre bore of the wheel locates properly on the lip on the hub of the vehicle to get a perfect fit. Most wheels work on a spigot ring locating system because most wheels have a centre bore bigger than the size of the hub lip allowing them to fit a wider range of cars. A spigot ring is fitted into the back of the wheel with an outer diameter the size of the centre bore, and an inner diameter the size of the hub lip to allow the wheel to be correctly located onto the hub and to fit tightly onto the vehicle for safety and comfort.

There are wheels that are hub centric i.e. the wheel is manufactured with a centre bore to fit precisely onto a specific vehicle and in these cases we would not supply spigot rings as they would be unnecessary.

If the wheel does not locate onto the vehicle's hub assembly correctly it will cause a vibration on the steering wheel and can lead to bad wear on the tyres and bearings so if spigot rings are provided you MUST use them.
 

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My wheels are 19x8 on a 45 offset. Look ok but i'm probably going to get 10mm spacers to take them out to a 35 offset, which should be close to the edge of the arches.

Standard interlagos are 18x 8 with a 41 offset.

The wheels tend to look lost in the arches more as a result of the arch gap than the offset IMO which doesn't really look any different to the interlagos.

Here's some pics of mine with a 45 offset.... enjoy :D











 

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Eaglewings, are you running 235/40 rubber on the Dotz Predators :?:
 

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Just put some Genuine VW Eos 18" wheels on to see if I like the way they look on the Scirocco, I am undecided and it is now dark plus the pic was taken before the suspension had settled so I will have to check again in the morning but here is the pic.....
chicago.jpg
They look tiny but pretty much everything about the picture is poor, light, angle etc :roll:
 

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Like the design of those wheels. Nice, something different. Have you had springs fitted? If not it would suit them. Also maybe a set of spacers at the rear so they fill the rear arches a bit better, but as you said hard to tell from that picture. ;)
 
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