Classic cars forum & vehicle restoration.

classic jenny · Joined: 04 Jun 2009 Posts: 12

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After taking the "8" out I had a knocking. Stopping to check the wheel nuts were tight this is what I found. Thank him upstairs for the slower speeds of these cars Shocked

now wanted good home if you have a spare Austin 8 wheel Very Happy

Rick · Site Admin Joined: 27 Apr 2005 Posts: 22437 Location: UK

Hi Jenny, can you add in the dimensions of the wheel you're looking for. I have one or two unidentified steel rims of that age behind the garage, may or may not be of use but I'll check

RJ
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Jim.Walker · Joined: 27 Dec 2008 Posts: 1229 Location: Chesterfield

This looks like a classic case of over-tightened wheel nuts! Why do people think manufacturers supply wheel braces with so little leverage??? The correct torque for most cars is around 30lbf/ft for pressed steel wheels. Any tighter can fracture the wheel centre. Morris Minor owners especially. BEWARE.
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Quote from my late Dad:- You only need a woman and a car and you have all the problems you
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buzzy bee · Joined: 23 Nov 2007 Posts: 3382 Location: South Cheshire

Hi

Tractor tyres are the exception from this rule, to torque them sufficently, you need at least a 3/4" drive torque wrench, around 260lb (for the ones the other day.

Cheers

Dave

classic jenny · Joined: 04 Jun 2009 Posts: 12

Hi Rick the wheel size is 17in

if yours look like the pick then hopefully should fit.
JIm I would agree with you. but unless this was overtightend over the years causing a weekness in the wheel I always fit my own tyres and only use the old trusted spider to tighten the nuts. Having been a tyre fitter many years ago I have seen the results of over tight nuts too often

Uncle Alec · Joined: 14 Jan 2008 Posts: 734 Location: Manchester

Riley RMs are slightly prone to the wheel centre fracturing - it happened to me a few years ago resulting in a fine and points.
My nuts aren't too tight, they are made of brass. Embarassed

Jim.Walker · Joined: 27 Dec 2008 Posts: 1229 Location: Chesterfield

Rick · Site Admin Joined: 27 Apr 2005 Posts: 22437 Location: UK

Hi again, I dug out the wheel I mentioned, also a 17" but sadly a six stud fitting Confused

(Morris perhaps) - 4.50x17 tyre fitted

Sorry!

R
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PAUL BEAUMONT · Joined: 27 Nov 2007 Posts: 1281 Location: Barnsley S. Yorks

It would be useful to know the tyre size too!
Using Radial ply tyres can also accellerate this type of failure
PAUL

Jim.Walker · Joined: 27 Dec 2008 Posts: 1229 Location: Chesterfield

Peter_L · Posted: Thu Nov 19, 2009 7:40 pm Post subject:

Paul raises a point about wheels and the use of Radial tires.

I haven't been able to find if this has been studied in any scientific tests or whether the comment comes from urban legend.

Having said that, I guess we all know that Radial Tires do give us a slightly harder ride than crossply, so if the radial doesn't absorb the same shock, would it be reasonable to presume that more stress is put on the wheel.

Anyone who has driven "roadcars" in competion, racing or rallying, will know that wheels nuts can come loose, so extra strain can cause a problem.

I know that when we take the SUV "up north" we do check the wheel nuts en route.

PAUL BEAUMONT · Joined: 27 Nov 2007 Posts: 1281 Location: Barnsley S. Yorks

May be Urban myth, but I have come across the problem of cracked rims a few times and it always seems to be associated with rims originally made for cross plies, now fitted with Radial tyres. I suspect, but have no evidence to back it up, that radial ply tyres encourage more adventurous use of a vehicle, so the rims see higher loads on cornering etc?
Anyone else got views?
PAUL

Jim.Walker · Joined: 27 Dec 2008 Posts: 1229 Location: Chesterfield

Cracked centres were not all that uncommon even in the pre-radial days (that comment might fit me - I am probably cracked and I was driving in pre-radial days!).
I have never met cracked rims except on alloy wheels (the use of which frightens me a bit) or as a result of kerbing etc. when pressed steel wheels usually bend anyway. By the way, the type of wheel shown in the earlier post was introduced as the Easy Clean wheel.
Still open to listening and learning from the experiences of others though.
_________________
Quote from my late Dad:- You only need a woman and a car and you have all the problems you
are ever likely to want". Computers had not been invented then!

47Jag · Posted: Fri Nov 20, 2009 2:19 pm Post subject:

My understanding is that the radial tyres maintains a more constant contact patch thereby providing better grip especially in cornering. This must increase the forces on the wheelnut due to the higher loads due to leverage. SIMPLES!! Smile

Art

Nic Jarman · Posted: Fri Nov 20, 2009 2:41 pm Post subject:

I must take the Morris 8 for a track day.
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