Wheel help please - Could be stupid!

[magicoi]

I bought some rs4 reps from a member who has an LC. I have a cupra tdi

Have had them powder coated and went to fit them today and was all excited. Problem is that they wont sit on the central part of the hub (spigot ??).

Tried only on the rear axle.

2 of the wheels had plastic bits inside to make the diamater a bit smaller and 2 didnt (assumed front and rear hubs are different sizes) so I tried the ones without and failed again! Now i wouldnt have thought that powder coat would reduce the open diameater by much at all! Would it?

The car was only on the standard winder jack so didnt try to force the wheels on or give them a whack!

Any ideas???? Im stressed and its started raining. i can only lol to myself

Ta

 

[Seatmann]

As long as they're to big in the centre and the bolt holes line up then it should be fine. The centre's just a guide for fitting but the bolts do all the work. You can get some of those plastic things later.

 

[LEE69]

Disagree, the centre bore does the work to.
If they didn't fit without the plastic bits in, i can't see them fitting at all.

The bore 57.1 mm on standard cars, measure the wheels, see what they are.

 

[andycupra]

spigot rings.
you should have these on all 4.

are they definately not fitting, or do you mean it dont hold the wheel in place if you let go.. as thsi is a different issue and one not to worry about.

 

[Seatmann]

My mate does this stuff for a living bud, the centre's a guide and the bolts do the work. It doesn't make sense to me either but that's the way I've been told. He's also into this stuff and has been for years and he's been fitting tyres for about 20 years. Trust me my mate's a bit of a geek about this stuff which is why I believe him.

 

[LEE69]

Trust me

I tried driving without spigot rings once, the vibration was terrible.

You need spigot rings.

 

[Seatmann]

You must be using the wrong bolts maybe though. If you put on after market wheels you need to use after market bolts because of the angle of the chamfered edge where the bolt sits is different. (But I don't mind being wrong though.)

 

[Steely]

My mate does this stuff for a living bud, the centre's a guide and the bolts do the work. It doesn't make sense to me either but that's the way I've been told. He's also into this stuff and has been for years and he's been fitting tyres for about 20 years. Trust me my mate's a bit of a geek about this stuff which is why I believe him.

Incorrect, Ive seen a wheel come off due to failed bolts because of no spigot rings, stress factors after shear testing showed the spigots were at fault for being too big,

 

[LEE69]

You must be using the wrong bolts maybe though. If you put on after market wheels you need to use after market bolts because of the angle of the chamfered edge where the bolt sits is different. (But I don't mind being wrong though.)

No, the correct bolts used.

 

[Seatmann]

Yeh but isn't that due to loose bolts shearing because of the strain? (I don't mind slapping my mate though)

 

[Captain Cupra]

They should be exactly the dame size from his to yours, your are fitting them with the correct spigot rings arnt you, front and back diameter centre spigots should be identical? Unless he was incorrect telling you they were of an LC when they actually were not just to get rid of them??

 

[LEE69]

Yeh but isn't that due to loose bolts shearing because of the strain? (I don't mind slapping my mate though)

No, but far less strain if the wheel can sit on something.

If the spigots were not needed every manufacturer would just have a flat face to mount the wheels too.

 

[Captain Cupra]

Do not fit without spigot rings the bolts are not meant to take all the weight load the centre spigot is what they sit on, DO NOT FIT WITHOUT CORRECT SPIGOT RINGS, Give Wheel Power Devon a call they deal with alot of rep alloys and are very helpful they should be able to provide the correct spigots rings let me find the number......

 

[Captain Cupra]

07775 210178 or 01803 293139 ask for Shaun I believe........ Thats Wheel Power Devon

 

[LEE69]

ask for Shaun I believe....

Ray

 

[magicoi]

Cheers Captain!

Well i bought them from Phillc so far as im aware they were the same ones that came of this car:

http://www.seatcupra.net/forums/showthread.php?t=178452&highlight=phillc

Pics of wheels on post 1.

Im just confused!! The hole in the wheels seem too small, not too big! Thats why i wondered if the hub sizes differ between TDI's and LC's!

Not sure about the whole needing new bolts thing tbh, why would that make a difference? If true surely you would get bolts supplied with any after market wheels?

Let me reiterate tho, the car was on the OE crappyjack so if a bt more force is needed then thats ok i can get my hands on a trolley jack and i have axle stands for more safety!! lol!

 

[LEE69]

Can you measure the diameter of the hole on the rear of the wheel where the spigot sits.

 

[suj]

centre spiggot plays a key role for wheels

if you have a bigger centrebore on the wheel, it is putting alot of strain on the wheel bolts, they were designed to keep wheels held flush to hub and stop rotation by doing this

if the centrebore is too big, then lateral forces will be acting on the bolts, will damage cause them to weaken/shear, then you will have a nasty accident if you are on motorway etc!!!

 

[magicoi]

Lee, I dont have any tools to measure accurately im afraid, just a tape measure and a ruler!

suj, The wheel seems too small for the hub so not that problem!!

 

[LEE69]

That will be fine