[walke_mr]

Hi all Im after a bit of advice from you knowlegable folk.

Does anyone know if the 19" style 225 alloys would fit straight on to an 08 e90 320d SE at all? Im running standard 16" at the moment but they just look to small and want something bigger and Ive been offered a set of genuine ones in cracking condition for less than a set of replicas would cost, thanks.

Any advice appreciated

M

[jjbirch]

yes genuine ones will fit,

[walke_mr]

Thanks for the quck reply wasnt sure if the offsets would be different meaning they wouldnt fit or would stick out or rub etc

Need to find some tyres now next sop camskill I think, cheers.

[dxb335d]

Glad you have found a set in cracking condition. Not
many like that.

[SteveF1]

Lets hope he hasn't found a 'cracking' set.

Thats all he'll need!

[baggy]

sorry to gate crash

quick question how many bar should the 19's be?
just got mine back from dealer after a wheel issue and the front are at 2.6 back at 2.4.
door card says 2.8 at back... but why would they put the wrong pressure in?

[toxicnerve]

baggy,

Are you running the standard RFTs? I run mine at 3.2 on the back at 2.7 on the front.

[SteveF1]

2.4 at the rear sounds low now matter what tyres you're on. Should be higher than that as if BMW have filled them they always follow the door cards unless they've let the chimp do it.

You haven't got 225m alloys have you. If you have make sure they've not cracked and are letting the pressures drop.

[baggy]

Originally Posted by toxicnerve

baggy,

Are you running the standard RFTs? I run mine at 3.2 on the back at 2.7 on the front.

sure am, bridgestone on the front and pirelli on the back.

[baggy]

Originally Posted by SteveF1

2.4 at the rear sounds low now matter what tyres you're on. Should be higher than that as if BMW have filled them they always follow the door cards unless they've let the chimp do it.

You haven't got 225m alloys have you. If you have make sure they've not cracked and are letting the pressures drop.

i have 2 new rear 225 alloys and tires due to cracks.....

[baggy]

Originally Posted by SteveF1

2.4 at the rear sounds low now matter what tyres you're on. Should be higher than that as if BMW have filled them they always follow the door cards unless they've let the chimp do it.

You haven't got 225m alloys have you. If you have make sure they've not cracked and are letting the pressures drop.

also both are 2.4 unlikely they both have lost the same amount of air.

[SteveF1]

If the cars been to BMW for cracking rear alloys and they've given you new ones then they may have dropped the pressures intentionally to help prevent excess stress on the backs and to allow the tyre at least some give instead of putting the majority of the load on the rim.

Dunno, just a thought.

[baggy]

Originally Posted by SteveF1

If the cars been to BMW for cracking rear alloys and they've given you new ones then they may have dropped the pressures intentionally to help prevent excess stress on the backs and to allow the tyre at least some give instead of putting the majority of the load on the rim.

Dunno, just a thought.

that makes senses, so should i take it up to 2.8

[SteveF1]

I'm not sure I would in all honesty. As far as I know 225s have an inherent weakness in their build, run them on softly sprung cars with normal tyres and they'll be fine forever an a day. Put them on a stiffly sprung BMW with runflats and they will almost certainly fail at one stage or another.

The only way to be sure of that is to drop the runflats and get normal tyres but if thats not an option I'd leave the pressures as they are if thats what BMW left them at. They must have done that for a reason and although lower pressures will ultimately cause higher inside edge tyre wear it should reduce the likelihood of a rim cracking again.

Ring the dealer who did it, ask for the head technician and run it by him and ask his advice if you're not sure.

[toxicnerve]

Stealers == morons.

I had a wheel refurbed and the goons let me leave with 2.0 in it.

Nuff said.

[remmib]

Actually, all OEM e9x wheels, 16" to 19" will fit your car.

[F31-340i]

Originally Posted by SteveF1

If the cars been to BMW for cracking rear alloys and they've given you new ones then they may have dropped the pressures intentionally to help prevent excess stress on the backs and to allow the tyre at least some give instead of putting the majority of the load on the rim.

Dunno, just a thought.

To my mind, the reverse is more likely the case - i.e. if the tyre is uninflated, the loads through the sidewall are probably higher than if the pressure within the tyre was taking the load and spreading it across the whole of the inside of the rim.

Hence it is possible that underinflated tyres are probably the key cause of the cracks with RFTs - this would also explain why it was not picked up during testing of the rims/tyres before they entered series production (as they would have probably been careful with pressures during R&D).

[SteveF1]

Then if thats the case BMW are crazy fools underinflating the tyres making the problem worse.

I thinka phonecall to the tech manager is in order here for the op.

[walke_mr]

Guys all this talk of cracked alloys made me do a bit of digging and reading the threads has put me right off the idea now, are the cracks easy to see when the alloys are removed? Any tell tale signs I should look for?

This may be the reason that Im being offered them at such a good price though I know the seller so would hope this isnt the case.

[walke_mr]

Originally Posted by remmib

Actually, all OEM e9x wheels, 16" to 19" will fit your car.

Thanks remmib thats very useful to know, I want bigger alloys on but want to keep quite a stock look but not too stock so Im avoiding the MV3 alloy as they are the normal choice but don't want to go down that route.

[F31-340i]

Originally Posted by walke_mr

Guys all this talk of cracked alloys made me do a bit of digging and reading the threads has put me right off the idea now, are the cracks easy to see when the alloys are removed? Any tell tale signs I should look for?

This may be the reason that Im being offered them at such a good price though I know the seller so would hope this isnt the case.

The cracks usually appear on the inner rim of the wheel - this area has a factory matt primer type finish - unlike the face of the wheel which is painted & laquered. It should be fairly obvious if e.g. the wheel has been cracked, repaired and a new finish applied - I could be wrong but I think it would be pretty hard to replicate the factory finish if a wheel has been e.g. welded. Hence, I suspect it should be easy to tell if it the wheels are cracked or cracked / repaired.

When I bought my 225s I knew about the cracking - I just made sure they had a factory finish on the inner rim and no cracks before I paid for them. So, as long as you're careful, go for it - they're great looking wheels. Having said that as you have an SE IMO I think you'd be better off with Style 162 or even 158 wheels.