[W126 Coupe] Jack's wheel saga.

[Sharan Bains]

Whilst deceleration wear is material, it's not as significant as 
acceleration wear.

The rears are suffering both - acceleration or deceleration wear ALL the 
time.

So whilst I agree that wear on w126 front tires is probably more than other 
RWD cars, it's difficult to believe it's more than the rear tyres on the 
same car, that drive all that weight forwards.

On my 3 W126's over the past 8 years, the rears have worn out far quicker 
than the fronts.

And on my w124 500E, the rears are changed about twice a week !!!!! :-) 
That's down to all the fun I'm having with the drags from the lights against 
all the boy racers.....it's great lacing their pimp ride with a German Taxi.

talbir



>From: "Chiappinelli, Joseph" <joseph.chiappinelli at mirant.com>
>Reply-To: Mercedes Coupes Mailing Lists <mbcoupes at mbcoupes.com>
>To: "Mercedes Coupes Mailing Lists" <mbcoupes at mbcoupes.com>
>Subject: RE: [W126 Coupe] Jack's wheel saga.
>Date: Wed, 2 Feb 2005 10:34:20 -0500
>
>Your physics are correct but not totally complete. There is the matter of 
>the weight on the front tires of 126's being significantly more than the 
>rears. In real world driving which does include curves, that weight plays a 
>significant roll. You also have the "deceleration' wear from braking that 
>is much more on the fronts than rears. On a RWD car with a 50/50 weight 
>distribution, it might be different but on my cars (always in alignment and 
>well maintained suspensions) I've always gotten more life out of the rear 
>tires.
>
>J.Chip
>
>-----Original Message-----
>From: mbcoupes-bounces at mbcoupes.com
>[mailto:mbcoupes-bounces at mbcoupes.com]On Behalf Of Sharan Bains
>Sent: Wednesday, February 02, 2005 10:23 AM
>To: mbcoupes at mbcoupes.com
>Subject: RE: [W126 Coupe] Jack's wheel saga.
>
>
>The rears wearing out quicker than the fronts is not related to power but
>due to the fact that the MB's are RWD.
>
>It's physics essentially - the rear wheels will always be accelerating and
>hence always wearing out. The fronts are not - they are only suffering wear
>on turning. Even on the highway, at a constant speed of 50mph say, the rear
>wheels will ALWAYS be accelerating. Unless you are on a frictionless
>surface, in which case there will be no acceleration.
>
>If fronts are wearing out quicker than rears on a RWD, then only two 
>reasons
>for it :
>
>(1) suspension/tracking is not right.
>
>(2) Your journey to work is 80% turn-ins and corners.
>
>The W126 requires 4-wheel alignment - i.e. the fronts need to be aligned
>with respect to the rears, since you cannot make any adjustments on the
>rears on a W126. But if trackings out you can have situations where your
>rear wheels are pointing straight ahead but your fronts are at a slight
>angle. So even when you're moving in a straight line, your fronts are
>essentially skidding along at an angle !
>
>If when driving in a straight line you are still hacksawing away at the
>steering wheel, i.e. continuous input to the steering, then there is a
>problem with suspension / tracking.
>
>talbir
>
>
>
> >From: "Shayegan, Richard" <rishayegan at davidson.edu>
> >Reply-To: Mercedes Coupes Mailing Lists <mbcoupes at mbcoupes.com>
> >To: "Mercedes Coupes Mailing Lists" <mbcoupes at mbcoupes.com>
> >Subject: RE: [W126 Coupe] Jack's wheel saga.
> >Date: Wed, 2 Feb 2005 09:43:54 -0500
> >
> >Same, but I think it's because the us 380 is too weak to burn out those
> >back tires but can get up to a high enough speed to do some cornering
> >work. Now my dad's 540, that thing will wear out the back tires. I think
> >the backs had 2/32 when we replaced them and the fronts had 4/32.
> >Richard
> >
> >-----Original Message-----
> >From: mbcoupes-bounces at mbcoupes.com
> >[mailto:mbcoupes-bounces at mbcoupes.com] On Behalf Of Chiappinelli, Joseph
> >Sent: Wednesday, February 02, 2005 8:49 AM
> >To: Mercedes Coupes Mailing Lists
> >Subject: RE: [W126 Coupe] Jack's wheel saga.
> >
> >Not suggesting there is no benefit, just questioning the cost/benefit
> >relationship. By the way, for whatever reason, my front tires have
> >always worn more rapidly than my rears on the four 126 models I've owned
> >over many years.
> >
> >J.Chip
> >
> >-----Original Message-----
> >From: mbcoupes-bounces at mbcoupes.com
> >[mailto:mbcoupes-bounces at mbcoupes.com]On Behalf Of Sharan Bains
> >Sent: Wednesday, February 02, 2005 8:24 AM
> >To: mbcoupes at mbcoupes.com
> >Subject: RE: [W126 Coupe] Jack's wheel saga.
> >
> >
> >
> >The tool for those OZ wheels IS held by certain refurbishers. Tools
> >required
> >to open almost every other multi-piece wheel made by BBS, OZ and Ronal
> >etc,
> >ARE readily available, since they usually require 12-point sockets or
> >12-point spline bits, which are available anywhere and everywhere.
> >
> >It's just these OZ 3-piece wheels that have a rare fastener head - but I
> >
> >managed to source the tool, so with a little effort, anyone else can
> >too.
> >
> >My original statements still hold true, namely :
> >
> >1) components can be replaced or re-furbished on multi-piece wheels
> >rather
> >than having to dish the whole wheel
> >2) higher quality AND lighter metal is used, meaning lower unsprung
> >weight
> >=> better handling
> >3) they look miles better than a single piece wheel
> >
> >Fine, point 3 is subjective. But points 1 and 2 are fact. It's why all
> >the
> >tuners, AMG, Brabus, Kleeman fit multi-piece wheels to their products.
> >It's
> >why BBS, OZ Racing etc, the best wheel designers in the world invest so
> >much
> >money on developing multi-piece wheels.
> >
> >Aftermarket wheels are always heavier and lower in quality.
> >
> >To suggest there is no benefit to multi-piece wheels is about as true as
> >
> >suggesting front tyres wear out quicker than rear ones on a RWD car. It
> >just
> >doesn't stack-up.
> >
> >
> >
> >Talbir
> >
> >
> >
> >
> >
> > >From: "Chiappinelli, Joseph" <joseph.chiappinelli at mirant.com>
> > >Reply-To: Mercedes Coupes Mailing Lists <mbcoupes at mbcoupes.com>
> > >To: "Mercedes Coupes Mailing Lists" <mbcoupes at mbcoupes.com>
> > >Subject: RE: [W126 Coupe] Jack's wheel saga.
> > >Date: Wed, 2 Feb 2005 07:29:12 -0500
> > >
> > >Ah...the "benefits" of multi-piece wheels.
> > >
> > >-----Original Message-----
> > >From: mbcoupes-bounces at mbcoupes.com
> > >[mailto:mbcoupes-bounces at mbcoupes.com]On Behalf Of Sharan Bains
> > >Sent: Wednesday, February 02, 2005 4:09 AM
> > >To: mbcoupes at mbcoupes.com
> > >Subject: RE: [W126 Coupe] Jack's wheel saga.
> > >
> > >
> > >Hi Jack,
> > >
> > >The tools required to open the 3-piece OZ Racing AMG wheels are not for
> >
> > >sale
> > >anywhere in the world.
> > >
> > >Only a few wheel refurbishers have the tools required. The attached
> >image
> > >shows the tools set that I have - I was lucky to get in touch with a
> > >contact
> > >on the inside to acquire these tools.
> > >
> > >The fastener heads are 8mm 10-point and the fastener nuts on the rear
> >are
> > >10mm 10-point.
> > >
> > >BTW, in a previous post you said the wheel shop had the wheels split -
> >how
> > >could this be possible if they do not have the tools to undo the
> >fasteners
> > >?
> > >
> > >Some cowboys grind out the original OZ fasteners and replace them
> >standard
> > >ones - beware ! The fasteners used by BBS and OZ are bespoke for
> > >multi-piece
> > >wheel usage - the fasteners have a tensile strength of 10.9, i.e. they
> >can
> > >withstand a force of 150,000 psi. Standard fasteners should not be used
> >on
> > >multi-piece wheels - only ever use the original fasteners. You can see
> >the
> > >numbers '10.9' engraved on each fastener head.
> > >
> > >You'll need to find a refurbisher who has the tools set for these
> >fasteners
> > >- someone who does AMG/Porsche wheels for a living. I don't think
> >you're
> > >going to find the tools anywhere.
> > >
> > >Talbir
> > >
> > >
> > > >From: "Jack Emery" <jemery at wn.com.au>
> > > >Reply-To: Mercedes Coupes Mailing Lists <mbcoupes at mbcoupes.com>
> > > >To: <mbcoupes at mbcoupes.com>
> > > >Subject: [W126 Coupe] Jack's wheel saga.
> > > >Date: Wed, 2 Feb 2005 16:00:26 +0800
> > > >
> > > >When I went to collect my wheel I was told that the repairer had no
> > >wrench
> > > >to fit the little stud bolts around the rim.His whole business is
> >wheels,
> > > >but he said he had not seen these wheels before.
> > > >The studbolts have 8 flutes in the head. Does anyone know where to
> >get a
> > > >wrench, please?
> > > >      Jack OZ
> > > >
> > > >
> > > >The MB Coupes Website!
> > > >W126 SEC Mailing List
> > > >Postings remain property of MB Coupes, L.L.C.
> > >
> > >The MB Coupes Website!
> > >W126 SEC Mailing List
> > >Postings remain property of MB Coupes, L.L.C.
> >
> >
> >The MB Coupes Website!
> >W126 SEC Mailing List
> >Postings remain property of MB Coupes, L.L.C.
> >The MB Coupes Website!
> >W126 SEC Mailing List
> >Postings remain property of MB Coupes, L.L.C.
> >
> >
> >The MB Coupes Website!
> >W126 SEC Mailing List
> >Postings remain property of MB Coupes, L.L.C.
>
>
>The MB Coupes Website!
>W126 SEC Mailing List
>Postings remain property of MB Coupes, L.L.C.
>The MB Coupes Website!
>W126 SEC Mailing List
>Postings remain property of MB Coupes, L.L.C.