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[Anthony in Madrid]

235/45/17 is standard tyre size, pcd is 110, would have to check the offset for 7.5j

30mm at back is too much. 20mm tops

If I do 20 mm drop at the back..better to do a 20mm at the front too right?

[chrisgixer]

235/45/17 is standard tyre size, pcd is 110, would have to check the offset for 7.5j

30mm at back is too much. 20mm tops

If I do 20 mm drop at the back..better to do a 20mm at the front too right?

No not necessarily there is a tolerance, but the reality for most is buying a set will give 15mm or 30mm drop. There is also a line of thinking that suggests a lower front gives better turn in and cancels some under steer.

The thing with the rear is to note that the settings are not achievable at more than 20mm drop. So either buy 30mm drop springs and fit a 10mm pad under the rears. Or buy 30mm fronts only, and fit (or keep the original) standard or lsc rear gm springs.

Also bear in mind, a substantial load on the rear will also compromise the rear settings and hence accelerate tyre wear so you need a bit of a buffer on the rear ride height, unless you have level control of course.

[Anthony in Madrid]

To save looking, offset is ET33

If you're looking to 18"s, then 8J, ET33 with either 235/40/18 or 245/40/18 tyres

Some nice five spoke 17s on the Design Edition

Hi again 
... Need to be educated... What does the "ET" stand for/mean?
Also what year did the Design Edition come out because here in Spain for sure it wasn't called that 
And thanks to everyone for the help...Really appreciate you taking the time to answer my questions.

Ant

[Anthony in Madrid]

If I do 20 mm drop at the back..better to do a 20mm at the front too right?
[/quote]

No not necessarily there is a tolerance, but the reality for most is buying a set will give 15mm or 30mm drop. There is also a line of thinking that suggests a lower front gives better turn in and cancels some under steer.

The thing with the rear is to note that the settings are not achievable at more than 20mm drop. So either buy 30mm drop springs and fit a 10mm pad under the rears. Or buy 30mm fronts only, and fit (or keep the original) standard or lsc rear gm springs.

Also bear in mind, a substantial load on the rear will also compromise the rear settings and hence accelerate tyre wear so you need a bit of a buffer on the rear ride height, unless you have level control of course.
[/quote]

Thanks for the advice...Will the car be tilting forward a lot if I choose 30 mm at the front and not touch the rear springs?
I'm actually looking for my car to sit similar to this:
Do you think those are 17's in the pic?
Cheers Ant

[chrisgixer]

Looks?

Doesn't come into it as far as I'm concerned.

[05omegav6]

ET is wheel offset. Eg ET 33 means that the hub face is 33mm outward of the wheel centre line

Design Edition was 2001/02, might be Germany only

Wheels in pic are 8J18 'Penta' wheels from Astra G/H and Zafira B.
They have an offset of 42 so ideally you would need spacers of 9-12mm to correct this. Using spacers will also require longer wheel bolts.

Hth

[Varche]

Anthony

You are in luck mate, more of that in a moment.

One thing you will have to think about is how you will get the car through its annual ITV (MOT) here in Spain with any non standard wheels. I know you see folk driving around with non standard but I have a strong suspicion they are in the trade or put their standard wheels back on for the ITV each year. Plus wider rims and bigger diameter and lowering contribute to a much poorer ride.

Now the really good news. I have been holding onto six genuine Omega Elite rims for another Spanish based forum member. He no longer requires them. They all have tyres but only two have good tread. The others I would describe as just legal. I have two sets of different centre caps for them . They are homologated for use on an Omega in Spain and are a straight swap. Homologated means they are listed as options in the Opel handbook.

Spring change at the front? Does that affect the suspension camber, castor etc settings? No WIM over here to set up correctly that I have ever been able to find so front tyre wear might become a serious issue? Omegas weren't big sellers here so not much expertise.

They are 7J X 16 inch diameter. Normal homologated tyre fitment is 225x55R16 95V (or W for 3litre). Good news is the tyres are quite reasonable price over here. Tyre size and rating is an ITV check item and needs to match your logbook.

You could have all six (giving you a spare too) for very reasonable money and I have a host of useful parts(items of Elite trim, badges, centre console, self dipping mirror and so on that I would throw in to a good home. Mrs Varche wants me to clear stuff out. Easy scenic run down from Valencia

Pictures on car here http://www.omegaowners.com/forum/index.php?topic=45487.msg687020#msg687020

If you are interested PM me for details and close up photos.

[TheBoy]

To save looking, offset is ET33

If you're looking to 18"s, then 8J, ET33 with either 235/40/18 or 245/40/18 tyres

Some nice five spoke 17s on the Design Edition

ET32 ish on 8J wheels. 7.5j will be something like 37...

7J16 is ET39

7.5J17 and 8J18 are both ET33

9J18 is ET30

Based on what I have here

Where are you getting that, as I'd expect a 7.5 and 8J to be about 6mm different on the ET. As an 8J is 32...

[05omegav6]

7J16ET39 I have two in the garage (CD 5spokes)

7.5J17ET33 both MV6 and Elite wheels, have had/have both

8J18ET33 Irmscher Stilas fitted to the estate

8J/9J18ET30 Irmscher SportStars (Omega fitment) as per Gixers

[chrisgixer]

7J16ET39 I have two in the garage (CD 5spokes)

7.5J17ET33 both MV6 and Elite wheels, have had/have both

8J18ET33 Irmscher Stilas fitted to the estate

8J/9J18ET30 Irmscher SportStars (Omega fitment) as per Gixers

8J18ET38Irmscher sports stars (Vectra Fitment) on the mv8. For now.

[Mr Gav]

8J18ET38Irmscher sports stars (Vectra Fitment) on the mv8. For now.

Bit early to be putting wheels on it 

[X30XE]

Does anyone happen to know how much the 17" Elite alloy weighs perchance?

[chrisgixer]

8J18ET38Irmscher sports stars (Vectra Fitment) on the mv8. For now.

Bit early to be putting wheels on it 

Yeah it is. But I need something to hold it up on the ramps.