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[Rockhampton]

I've just noticed that my Omega appears to be fitted with the wrong tyres on the front! I bought it two weeks ago, and have noticed a bit of vibration at about 40mph, so decided to check the pressures - close inspection reveals that the front tyres are 205/50 16 whereas the rears are 255/55 as specified in the handbook - looks like the previous owner cheaped out or go ripped off when he replaced them!
They'll have to wait until at least next payday now before I can change them (although they are fairly new they are Korean ones) - just wondered if anyone else had seen anything like this?

[NiallyV6CDX]

Both those sizes are fitted as standard equipment on verious spec of Omega.
The 205s normally on the 4 cylinder models, the 225s on the V6s and higher spec models, although normally only one size on the car at a time!

Its nothing too dangerous although it will probably make your handling more understeery, so might be wise to get them back to 225s allround at some point.
Vibrations just mean the wheels need rebalancing.

[Rockhampton]

Thanks for that - more irritated with myself for not noticing and knocking some money off!
I don't like having tyres mixed up, so I'll get some nice proper ones in about a month or so!

[MutantCav]

Where do you live mate?? Might be able to do you a swap...I have a couple of good 225/55/16's here and the 205/50/16's would go on the Zafira

[Rockhampton]

Near Cardiff I'm afraid, but thanks for the offer 

[kcl]

Both those sizes are fitted as standard equipment on verious spec of Omega.
The 205s normally on the 4 cylinder models, the 225s on the V6s and higher spec models, although normally only one size on the car at a time!

Its nothing too dangerous although it will probably make your handling more understeery, so might be wise to get them back to 225s allround at some point.
Vibrations just mean the wheels need rebalancing.

Wrong. 205 tyres should be 65 profile and 15 inch, not 50 and 16 inches as Rockhampton has.

So, basic setup has been 205/65/15 and/or 225/55/16. Some four-pots were fitted with 195/65/15 and some of the newest higher-end models with 235/45/17

[MutantCav]

Had a thought...2 tyres can be sent by parcelforce 48 for £11 using senditnow.com so I could send you the 2 tyres I have...then you send the smaller ones back when they have been swapped over??

[Rockhampton]

Sounds like a plan - could get them swapped within a couple of days this end..... send me a PM and we'll arrange the details - cheers!

[MutantCav]

Will do

[Mr Skrunts]

I've just noticed that my Omega appears to be fitted with the wrong tyres on the front! I bought it two weeks ago, and have noticed a bit of vibration at about 40mph, so decided to check the pressures - close inspection reveals that the front tyres are 205/50 16 whereas the rears are 255/55 as specified in the handbook - looks like the previous owner cheaped out or go ripped off when he replaced them!
They'll have to wait until at least next payday now before I can change them (although they are fairly new they are Korean ones) - just wondered if anyone else had seen anything like this?

So what size does the hand book say the fronts should be?

[MutantCav]

I'm assuming the 255 is a mistype of 225?

[Mr Skrunts]

I'm assuming the 255 is a mistype of 225?

Thats why I drew attantion to it, kust incase he has the wrong size on the back as well. 

[i260]

Both those sizes are fitted as standard equipment on verious spec of Omega.
The 205s normally on the 4 cylinder models, the 225s on the V6s and higher spec models, although normally only one size on the car at a time!

Its nothing too dangerous although it will probably make your handling more understeery, so might be wise to get them back to 225s allround at some point.
Vibrations just mean the wheels need rebalancing.

Wrong. 205 tyres should be 65 profile and 15 inch, not 50 and 16 inches as Rockhampton has.

So, basic setup has been 205/65/15 and/or 225/55/16. Some four-pots were fitted with 195/65/15 [size=16]and some of the newest higher-end models with 235/45/17[/size][/b]

...and all the MV6's (except some of the plod ones with steel 15's!!).

[Rockhampton]

Yes, sorry - the 255 was a typo - they are 225's