weird tyre wear

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V

Vince

Guest
I think it is called scalloping or castellated wear. Basically alternate
tread blocks are worn down.

This happened on all 4 Colway mud terrains on my 110 and has now happened on
my 300tdi discovery. On the back tyres which are Avon Rangemasters - the
original tyres - they had done 48,000 miles no probs - 4,000 miles of me
driving and this happens.

Is it me? Tyre pressures etc fine - maybe it is the way I drive round
corners.

ANY ideas???


 
Vince wrote:
> I think it is called scalloping or castellated wear. Basically alternate
> tread blocks are worn down.
>
> This happened on all 4 Colway mud terrains on my 110 and has now happened on
> my 300tdi discovery. On the back tyres which are Avon Rangemasters - the
> original tyres - they had done 48,000 miles no probs - 4,000 miles of me
> driving and this happens.
>
> Is it me? Tyre pressures etc fine - maybe it is the way I drive round
> corners.
>
> ANY ideas???

Worn shock absorbers is a possibility. I've seen them cause this on
non-LR 4WD vehicles.


--
EMB
 

"Vince" <[email protected]> wrote in message
news:[email protected]...
>I think it is called scalloping or castellated wear. Basically alternate
> tread blocks are worn down.
>
> This happened on all 4 Colway mud terrains on my 110 and has now happened
> on
> my 300tdi discovery. On the back tyres which are Avon Rangemasters - the
> original tyres - they had done 48,000 miles no probs - 4,000 miles of me
> driving and this happens.
>
> Is it me? Tyre pressures etc fine - maybe it is the way I drive round
> corners.
>
> ANY ideas???
>
IIRC soft shock absorbers can do that as can worn or badly adjusted
suspension components - wheel bearings balljoints and bushes once upon a
tyme Haynes used to have a section showing wear and causes that was when the
manuals were useful reassmbly is the reverse of this.
Derek
Disco 200TDi


 
Vince wrote:
> The shocks are fine - they were brand new on my 110 and look fine on the
> Disco.

And the last 2 vehicles I have seen with this problem have had shocks
that "looked fine" and even seemed fine when removed and tested by hand.
However replacement shocks on both of them appears to have resolved
the tyre wear issue.

WRT to you having the problem with new shocks, it's possible that the
shocks supplied to you did not have enough damping capacity for the
vehicle you fitted them to. Some of the cheaper suppliers are notorious
for selecting shocks for an application merely on dimensions and not on
actual damping ability.


--
EMB
 
The shocks on the 110 were the Monroe Adventurer yellow ones. Discovery has
the standard shocks and has done 54,000 miles now.

I have had the disco for just over 1 month - tyres WERE fine - original
ones - low on tread but still legal. No sign of scalloping until I started
driving it.


"EMB" <[email protected]> wrote in message
news:[email protected]...
> Vince wrote:
> > The shocks are fine - they were brand new on my 110 and look fine on the
> > Disco.
>
> And the last 2 vehicles I have seen with this problem have had shocks
> that "looked fine" and even seemed fine when removed and tested by hand.
> However replacement shocks on both of them appears to have resolved
> the tyre wear issue.
>
> WRT to you having the problem with new shocks, it's possible that the
> shocks supplied to you did not have enough damping capacity for the
> vehicle you fitted them to. Some of the cheaper suppliers are notorious
> for selecting shocks for an application merely on dimensions and not on
> actual damping ability.
>
>
> --
> EMB


 

"Vince" <[email protected]> wrote in message
news:[email protected]...
> The shocks are fine - they were brand new on my 110 and look fine on the
> Disco.
>
> I can't see that worn anything other than possibly wheelbearing could
> effect
> a beam axle?
>
> Just found this
>
> http://www.landrover.ee/est/files/manuals/cars/rrc/rrm_wheels_tyres.pdf
>
> It says "excessive cornering speeds" - that's telling me then!!!
>
Owt that effects wheel alignment can make tyres wear oddly like worn rear
radius arm bushes on a mini could feather the treads I used to wear the
fronts out on Autotests no suspension problems needed just 3000rpm off the
line. That chart looks like the Haynes one though their was photo's handy I
must have it somewhere about.
Derek


 
Just stopped to think logically about this - also did some reading up and it
could well be wheel balance - there IS a vibe at about 50mph you can drive
through but it is harder to detect wheel balance probs on the back.

Worn shocks could also be the cause - to cause the scalloping the wheel must
be vibrating up and down. Just not in my case.

I know on my Colway MT on my 110 they just couldn't balance them perfectly -
they said most mud pluggers are the same.

On the disco the car has prob never been over 45mph before so balance probs
didn't show up.


"EMB" <[email protected]> wrote in message
news:[email protected]...
> Vince wrote:
> > The shocks are fine - they were brand new on my 110 and look fine on the
> > Disco.
>
> And the last 2 vehicles I have seen with this problem have had shocks
> that "looked fine" and even seemed fine when removed and tested by hand.
> However replacement shocks on both of them appears to have resolved
> the tyre wear issue.
>
> WRT to you having the problem with new shocks, it's possible that the
> shocks supplied to you did not have enough damping capacity for the
> vehicle you fitted them to. Some of the cheaper suppliers are notorious
> for selecting shocks for an application merely on dimensions and not on
> actual damping ability.
>
>
> --
> EMB


 

"Vince" <[email protected]> wrote in message
news:[email protected]...
> I think it is called scalloping or castellated wear. Basically alternate
> tread blocks are worn down.
>
> This happened on all 4 Colway mud terrains on my 110 and has now happened
on
> my 300tdi discovery. On the back tyres which are Avon Rangemasters - the
> original tyres - they had done 48,000 miles no probs - 4,000 miles of me
> driving and this happens.
>
> Is it me? Tyre pressures etc fine - maybe it is the way I drive round
> corners.
>
> ANY ideas???
>
>
The previous owner must have driven the Disco very gently to get 48k out of
a set of tyres. The Disco is a heavy car and consequently needs good brakes;
are you using them excessively hard?

Martin.


 
Yes the Discovery was really treated well - serviced every 4,000 miles -
front tyres new - back ones original - tyre walls starting to crack with
age.

Yes I do drive quite hard - but don't use the brakes much - engine breaking
and racing lines through roundabouts.


"Oily" <[email protected]> wrote in message
news:[email protected]...
>
> "Vince" <[email protected]> wrote in message
> news:[email protected]...
> > I think it is called scalloping or castellated wear. Basically alternate
> > tread blocks are worn down.
> >
> > This happened on all 4 Colway mud terrains on my 110 and has now
happened
> on
> > my 300tdi discovery. On the back tyres which are Avon Rangemasters - the
> > original tyres - they had done 48,000 miles no probs - 4,000 miles of me
> > driving and this happens.
> >
> > Is it me? Tyre pressures etc fine - maybe it is the way I drive round
> > corners.
> >
> > ANY ideas???
> >
> >
> The previous owner must have driven the Disco very gently to get 48k out
of
> a set of tyres. The Disco is a heavy car and consequently needs good
brakes;
> are you using them excessively hard?
>
> Martin.
>
>


 
Vince wrote:

|| I know on my Colway MT on my 110 they just couldn't balance them
|| perfectly - they said most mud pluggers are the same.

ATS told me this when I fitted BFG ATs to the RR. I asked them to try
harder and sure enough they got them balanced in the end. Had to have them
rebalanced every 10K afterwards, so balancing isn't the simple matter it is
with "normal" tyres. The tyre fitters aren't lying, they just aren't trying
hard enough. :)

--
Rich
==============================

I don't approve of signatures, so I don't have one.


 
On Sun, 30 Apr 2006 22:28:44 +0100, "Oily"
<[email protected]> wrote:

>
>"Vince" <[email protected]> wrote in message
>news:[email protected]...
>> I think it is called scalloping or castellated wear. Basically alternate
>> tread blocks are worn down.
>>
>> This happened on all 4 Colway mud terrains on my 110 and has now happened
>on
>> my 300tdi discovery. On the back tyres which are Avon Rangemasters - the
>> original tyres - they had done 48,000 miles no probs - 4,000 miles of me
>> driving and this happens.
>>
>> Is it me? Tyre pressures etc fine - maybe it is the way I drive round
>> corners.
>>
>> ANY ideas???
>>
>>
>The previous owner must have driven the Disco very gently to get 48k out of
>a set of tyres. The Disco is a heavy car and consequently needs good brakes;
>are you using them excessively hard?
>
>Martin.
>

It depends very much on the tyres. I found BFG long trail good for
40K at least, and that was on a hard-driven V8. The Michelin ones
that came off hadn't gone much past 20k and were totally shot.

--

Tim Hobbs

'58 Series 2 88" aka "Stig"
'03 Volvo V70
'06 Nissan Navara aka "The Truck"
 
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