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caribcat



Member Since: 11 Jun 2009
Location: Anglesey
Posts: 97
2013 Defender 110 Puma 2.2 USW Aintree Green
ZU Rims and BFG wobble -Eureka!
New ZU and BFG AT combo wobbling badly at 50-60 mph. Checked all bushes, balanced twice, replaced steering damper. It just got worse. After the second trip to the tyre shop (recommended for being the best) my wife could feel the vibration sitting in the passenger seat!

I took a wheel off to check a hub. Couldn't be bothered to drag my compressor out so used wheel wrench. Once loose I noticed that if I rotated the wheel the nuts came off with my fingers easily at around 4 and 7 o'clock. Idea Hmmm, I thought.... There was about 1-1.5mm of movement as I rotated the wheel so I did all the nuts up finger tight constantly turning the wheel before cranking with the wrench. Repeated this on the rest, having to clean out a bunch of swarf from one wheel that had obviously just been forced on with an air gun.

I spoke to ZU who said that they cannot really control the thickness of the powder coat but had to allow a certain tolerance for it. Maybe the coating on mine is very thin? They also said they have had a problem in the past with after market wheel nuts. My 110 is an XS, I assume my nuts are genuine.... (fnaar fnaar)

Anyway, the upside is there is now NO wobble.
Post #192791 11th Dec 2012 7:50pm
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GREENI



Member Since: 22 Aug 2010
Location: staffs
Posts: 10376
United Kingdom 
A good pointer to anyone else with fresh fitted, coated wheels. Thumbs Up
Post #192795 11th Dec 2012 7:56pm
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leeds



Member Since: 28 Dec 2009
Location: West Yorkshire
Posts: 8578
United Kingdom 
Re: ZU Rims and BFG wobble -Eureka!
caribcat wrote:



Repeated this on the rest, having to clean out a bunch of swarf from one wheel that had obviously just been forced on with an air gun.




That is probably the cause of your wheel wobble. Chances are they did not do all the wheel nuts up finger tight first so that the wheel is correctly centred, then tightened up to the correct torque setting.

Now I would guess the torque setting on the rattle gun was set to F. T. Setting.

Have you asked what the torque setting on rattle gun is? Have you asked them what the torque setting should be?

It can be amusing when you hand them a torque wrench set to the correct torque Razz Rolling with laughter



Brendan
Post #192799 11th Dec 2012 8:18pm
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mick



Member Since: 08 Feb 2010
Location: Yorkshire
Posts: 2109
England 2010 Defender 130 Puma 2.4 HCPU Rimini Red
If I can I always fit my own wheels as they always seem to Censored a nut up. Neutral
Post #192805 11th Dec 2012 8:38pm
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ken



Member Since: 18 Aug 2009
Location: Banging Birds with my bitches !!
Posts: 4328
United Kingdom 
With any coated wheel new or refurbed always ream the central hole and the nut holes make no exception

We then zip them up to hand tight then torque bar to the correct Nm
Post #192820 11th Dec 2012 9:26pm
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SteveS



Member Since: 05 Oct 2010
Location: Devon & Berkshire
Posts: 388
England 2009 Defender 110 Puma 2.4 USW Santorini Black
i always get the tyre fitters to finish off with a torque wrench - and watch them do it - gives me a warm feeling and double checks that every stud has been tightened properly.

I once sat in a car (passenger) and watched one of the wheels come flying past on the Hammersmith by-pass Rolling Eyes
Post #193756 15th Dec 2012 5:20pm
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itayt



Member Since: 05 Feb 2012
Location: Herzelia
Posts: 13
Israel 
Had exactly the same combo and the same problem.
I Replaced almost everything in the car and the wooble didnt stop.
Finaly i noticed that the wheel nuts are about 1-2mm smaller in diameter then the zu holes...
I made a bracket and placed it inside the wheel nuts hole and inserted the nuts insite and the wooble stopped.
the nusts are just too small for the zu wheels...
Post #198076 1st Jan 2013 10:16am
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chadjizz



Member Since: 25 Apr 2012
Location: sussex
Posts: 559
England 2013 Defender 130 Puma 2.2 HCPU Orkney Grey
itayt wrote:
the nusts are just too small for the zu wheels...


really, is that standard nuts?
Post #198101 1st Jan 2013 12:29pm
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itayt



Member Since: 05 Feb 2012
Location: Herzelia
Posts: 13
Israel 
chadjizz wrote:
itayt wrote:
the nusts are just too small for the zu wheels...


really, is that standard nuts?

No. Standart Nuts are for steel wheels, the zu rims are alow and need cones as nuts. the nuts are from britpart
Post #198102 1st Jan 2013 12:34pm
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chadjizz



Member Since: 25 Apr 2012
Location: sussex
Posts: 559
England 2013 Defender 130 Puma 2.2 HCPU Orkney Grey
every day is a school day.
Post #198104 1st Jan 2013 12:39pm
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JSG



Member Since: 12 Jul 2007
Location: Berkshire
Posts: 2412
United Kingdom 2011 Defender 110 Puma 2.4 XS CSW Stornoway Grey
IIRC standard LR nuts for alloy wheels work with Zu wheels - could be wrong though ... John

http://www.hampshire4x4response.co.uk

2011 Tdci 110 CSW XS
Post #198343 2nd Jan 2013 1:31pm
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itayt



Member Since: 05 Feb 2012
Location: Herzelia
Posts: 13
Israel 
JSG wrote:
IIRC standard LR nuts for alloy wheels work with Zu wheels - could be wrong though ...

Allow nuts are shaped like cones so that when they press on the allow they wont make damage. still nuts centers the wheel because the wheel nut hole is shaped like a cone.
if you use regular steel nuts on allow wheels you will damage the allow
Post #198344 2nd Jan 2013 1:38pm
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JSG



Member Since: 12 Jul 2007
Location: Berkshire
Posts: 2412
United Kingdom 2011 Defender 110 Puma 2.4 XS CSW Stornoway Grey
itayt wrote:
JSG wrote:
IIRC standard LR nuts for alloy wheels work with Zu wheels - could be wrong though ...

Allow nuts are shaped like cones so that when they press on the allow they wont make damage. still nuts centers the wheel because the wheel nut hole is shaped like a cone.
if you use regular steel nuts on allow wheels you will damage the allow


Yes, that is why I said that the standard LR nuts for ALLOY wheels, such as the ones supplied with Boosts work with Zu wheels. Thumbs Up John

http://www.hampshire4x4response.co.uk

2011 Tdci 110 CSW XS
Post #198365 2nd Jan 2013 2:19pm
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itayt



Member Since: 05 Feb 2012
Location: Herzelia
Posts: 13
Israel 
Do you have the LR part number for the LR nuts ?
Post #199377 6th Jan 2013 1:44pm
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