Omega Owners Forum
Omega Help Area => Omega General Help => Topic started by: frostbite on 30 June 2016, 09:13:17
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Hey guys
I have found a nice set of 18s, there fitted with 235-40-18 and have an et of 42,
Question is what size spacer would be needed and would the standard suspension be to high or would it settle down?
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how wide are the rims?
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It will sit like a 4x4 if it's not lowered, depends of that's the look you're after?
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The ET for standard wheels is ET33 though I think the Irmscher wheels were a little different, My Azev C`s are ET38 and are 8" wide, with 235/45/17 tyres and fit perfectly.
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My irmscher wheels are 18s with et30 running on 235/40/18. :y
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Well I was having another look at them and they are shagged, look nice from a distance but you can't get away from a rattle can finish.
Another question
What's the largest rim size without lowering?
Cheers
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It will sit like a 4x4 if it's not lowered, depends of that's the look you're after?
Rubbish... rolling radius is almost identical to the 235/45/17s fitted to MV6/late Elites, and smaller than the 225/55/16s fitted to the bulk of the Omega catalogue.
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It will sit like a 4x4 if it's not lowered, depends of that's the look you're after?
Rubbish... rolling radius is almost identical to the 235/45/17s fitted to MV6/late Elites, and smaller than the 225/55/16s fitted to the bulk of the Omega catalogue.
With lower profile tyres and standard suspension it will appear higher...
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Nope, from personal experience.
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It will sit like a 4x4 if it's not lowered, depends of that's the look you're after?
Rubbish... rolling radius is almost identical to the 235/45/17s fitted to MV6/late Elites, and smaller than the 225/55/16s fitted to the bulk of the Omega catalogue.
With lower profile tyres and standard suspension it will appear higher...
Only if you've changed the rolling radius(the actual diameter of the tyre fitted to the wheel and inflated to the pressure you're going to use) by a large amount. And that will have more affect on the gearing than appearance. The quoted tyre size probably won't do that.
You can fiddle about with the appearance by doing all sorts of visual tricks like changing the colour of the wheels, polishing the rims, different offsets and widths, even using a tyre with a squarer shoulder(this applies more to older tyre sizes rather than modern low-profiles)
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Fine, I know when to not try and be helpful in future, I only worked for a tyre company for 3 years so have no idea what I'm talking about ::)
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I had 18's fitted to my Omega when I first go it, and TBH it looked bloody terrible with them fitted... was waaay too high, and looked like Id jacked the suspension up....
The rolling radius will be the same, but they will make the car appear to be higher....
Mine was fitted with 215 35 18 tyres, correct 18 inch profile for a Vectra B, so that might have played a part too :)
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I had 18's fitted to my Omega when I first go it, and TBH it looked bloody terrible with them fitted... was waaay too high, and looked like Id jacked the suspension up....
The rolling radius will be the same, but they will make the car appear to be higher....
Mine was fitted with 215 35 18 tyres, correct 18 inch profile for a Vectra B, so that might have played a part too :)
I believe it's due to having lower profile tyres on larger rims so less give in the tyres with the weight of the car, hence why it's easy to spot when people only change the wheels :)
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Fine, I know when to not try and be helpful in future, I only worked for a tyre company for 3 years so have no idea what I'm talking about ::)
Ok. Explain it then... How does a wheel/tyre combination change with the same rolling radius alter the suspension height ???
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A picture paints a thousand words...
(http://i1277.photobucket.com/albums/y486/05omegav6/IMG_20130310_084453_zps155uoq13.jpg)
Rolling radius identical to the original, factory wheels/tyres, standard working self levelling suspension...
And not a 4x4 in sight ::)
Incidentally, not my car ;)
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this is my old omega which was lowered on 40mm springs. and had 18x8.5 front with 225/40/18 on and 18x9.5 rear with 235/40/18 on to give you rough idea what these looked like these was et42 with 20mm spacers allround
(http://i1131.photobucket.com/albums/m542/jmwno5/Mobile%20Uploads/FB_IMG_1467469900492.jpg) (http://s1131.photobucket.com/user/jmwno5/media/Mobile%20Uploads/FB_IMG_1467469900492.jpg.html)
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The red one looks right, sadly the white one is riding high, it is exaggerated by the bigger wheels...
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The red one looks right, sadly the white one is riding high, it is exaggerated by the bigger wheels...
It had heavy duty springs and working self levelling. Ride height was identical with 16" wheels and the 55 profile tyres looked like balloons in comparison. Camera angle also has an effect...
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The red one looks right, sadly the white one is riding high, it is exaggerated by the bigger wheels...
The red one looks lowered, the white one looks at standard height ;)
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One month old:
- Bilstein B4 shocks and front springs
- HD rear springs with 5 mm spacer to get rear higher a bit
- 18x8.5" ET30 rims
- Continental ContiSportContact5 235/45-18 tyres
For my usage it is on perfect riding level (with poly bushes installed of course ;) ).
(http://i65.tinypic.com/vsl7i1.jpg)
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Looks good, what's the maximum wheel size for standard spring height?
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Looks good, what's the maximum wheel size for standard spring height?
See pic. This is it, if I remember correctly, 66.6 cm wheel total diameter is the max. Otherwise it will touch strut lower plate.
(http://i64.tinypic.com/250uxe1.jpg)
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I had 18's fitted to my Omega when I first go it, and TBH it looked bloody terrible with them fitted... was waaay too high, and looked like Id jacked the suspension up....
The rolling radius will be the same, but they will make the car appear to be higher....
Mine was fitted with 215 35 18 tyres, correct 18 inch profile for a Vectra B, so that might have played a part too :)
Yeah, that'd knacker the rolling radius somewhat ;D