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View Poll Results: Where do you put the best tyres
I put the best on the front axle 16 44.44%
I put the best on the rear axle 17 47.22%
I don't care about that, it doens't matter 3 8.33%
Voters: 36. You may not vote on this poll

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Old 10th April 2008, 08:47   #1 (permalink)
Uwe_rossi
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Where to put the better tyres

Last weekend while having a driver safety training we discussed where to put the tyres with more thread profile.
Still that day I thought on the driving axle should be the best ones.
But the trainer said that the rear axle guides the car and there should be the best tyres.
This doesn't matter to the BMW and MB but what about you as EV2 owner where do you put the best tyres front or back?????

Opinions????
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Old 10th April 2008, 09:04   #2 (permalink)
MAKUF
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As far as I can remember best tyres should be on rear axle because it is essential for "straight ahead driving" (In German: Geradeausfahrt, Spurhaltung ???).
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Old 10th April 2008, 09:28   #3 (permalink)
aroone
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Having much better grip on front axle during breaking and turning at the same you are risking to lose grip with rear axle .... and this means "flying" away rear of the car. Of course, such never will happen during normal driving conditions, but when road is slippery (wet, snow, ice, sand on asphalt, ....) such might happen. So, trust your instructor
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Old 10th April 2008, 09:39   #4 (permalink)
linte
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Quote:
Originally Posted by Uwe_rossi View Post
Last weekend while having a driver safety training we discussed where to put the tyres with more thread profile.
Still that day I thought on the driving axle should be the best ones.
But the trainer said that the rear axle guides the car and there should be the best tyres.
This doesn't matter to the BMW and MB but what about you as EV2 owner where do you put the best tyres front or back?????

Opinions????
It is the same problem with snow chains.

I fit nevertheless the better tyres in front, I need a better adhesion driving off the car.
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Old 10th April 2008, 09:42   #5 (permalink)
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Well, the German ADAC published a table from Michelin where the pluses and minuses weigh out each other, but in the end they confirm that the better ones should be on the rear axle, mainly for the reson MAKUF already mentioned.

For German speakers:
Auf welche Achse die besseren Reifen?=

"Befassen wir uns nochmals mit dem Teil II der Tabelle, den "kritischen Fahrzuständen": Entscheidend für die Richtungsstabilität des Fahrzeugs, sowohl in Kurven, wie auch bei Geradeausfahrt sind die Seitenführungskräfte der Hinterachse. Blockierende Räder bei einer Bremsung oder Überschreitung der Haftreibung zwischen Reifen und Fahrbahn ("zu schnell in der Kurve") können abrupt zu einem nicht mehr kontrollierbaren Fahrverhalten führen (Fahrzeugheck bricht aus, Übergang zum Schleudern). Diese Seitenführungskräfte fallen bei unzureichender Profiltiefe besonders stark und dann schlagartig ab. Ein Fahrzeug, welches über die Vorderräder zum Kurven-Außenrand schiebt ("Untersteuern") kann problematisch sein.
Mehr als problematisch ist es aber, ein ausbrechendes Fahrzeugheck ("Übersteuern"), in solchen kritischen Fahrsituationen durch Gegenlenken wieder auf den gewünschten Kurs zu bringen. Bei dieser Gelegenheit ein Tip: Informieren Sie sich beim ADAC über das angebotene Fahrsicherheitstraining - all diese Dinge werden dort demonstriert und können so von Ihnen selbst "erfahren" werden! Bei einer Gegenüberstellung aller Vor- und Nachteile ergibt sich somit, daß kritische Fahrzustände besser beherrschbar sind, wenn die Reifen mit der größeren Profiltiefe auf der Hinterachse montiert werden. Dies gilt für Pkw mit Vorderrad-, Allrad -und Heckantrieb. "

Regards,
Rainer
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Old 10th April 2008, 09:48   #6 (permalink)
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I put the better tyres on the forced axle. Forever!
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Old 10th April 2008, 13:00   #7 (permalink)
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Poll alternative missing

Each time I change from winter to summer or summer to winter tyres, I rotate the tyres (left back <-> left front, right back <-> right front). So the difference is minimal anyway.
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Old 10th April 2008, 13:20   #8 (permalink)
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Quote:
Originally Posted by linte View Post
It is the same problem with snow chains.

I fit nevertheless the better tyres in front, I need a better adhesion driving off the car.
genau - auch ich montier die Besseren immer vorne - das wird sich auch durch Empfehlungen von Reifenhersteller oder Instruktoren nicht ändern. Keine Frage ein übersteuerndes Fahrzeug ist schwerer einzufangen als ein untersteuerndes, aber es ist mir trotzalledem viel lieber das Heck bricht aus, als ich rutsche unkontrolliert geradewegs von der Strasse. Gerade bei Fahrzeugen ohne elektronische Helferlein (wie bei meinem Zweitwagen) ist es wichtig immer noch reagieren zu können - und das geht nunmal beim Übersteuern besser als beim Untersteuern.

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I put the better tyres on the forced axle. Forever!
correct - forever and ever

Quote:
Originally Posted by gazonk View Post
Each time I change from winter to summer or summer to winter tyres, I rotate the tyres (left back <-> left front, right back <-> right front). So the difference is minimal anyway.
genau - dann sind immer alle schön gleichabgefahren und wesentlich längere Intervalle stellen sich ein. Bei mir läuft sogar der Reservereifen mit - sind ein Reifenpaar besonders hinüber wird ein Reifen ersetzt und als 2. kommt der Reservereifen zum Einsatz. Bei den Reifenkosten wird der Reservereifen nicht ungenutzt und neuwertig spazierengefahren. Ein abgefahrener tuts zur Not auch.
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Old 10th April 2008, 16:27   #9 (permalink)
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Quote:
Originally Posted by Fred View Post
Bei mir läuft sogar der Reservereifen mit
Das sieht aber blöd aus wenn der Reservereifen auf einer häßlichen Stahlfelge sitzt...
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Old 10th April 2008, 17:35   #10 (permalink)
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Depends...

Quote:
Originally Posted by Uwe_rossi
But the trainer said that the rear axle guides the car and there should be the best tyres.
This is definitely true. If you have a set with 2 "poor" tires (e.g. 3mm) and an almost new one (e.g. 7mm) you should put the better ones to the rear.

I tested the importance of guidance of the rear wheels on my old VW years ago with a set of 2 older bias-ply-tires (Diagonalreifen) - they still had enough profile! - and 2 radial tires (Gürtelreifen). Using the bias-ply-tires in the front has no remarkable negative effect, even on a wet road. But using the bias-ply-tires in the rear it was very hazardous driving in the rain, because the rear would swerve quite a bit.

But the effect is - of course - less if you have four still good tires, let's say 2x 7mm and 2x 5mm. I would put the 7mm-tires in the front, because at the end of the season I have 4 tires with the same wear.

This is what I prefer, so I also rotate my tires when changing as others already stated.

That means that I will not have to buy new tires in a while, but when they are due, I have to change all 4 of them.

Always putting the best tires in the back means that the front tires wear out a lot earlier than the rear ones, so you will have to exchange 2 tires a lot earlier. Then of course you will put the better tires to the back, so the "old" front tires will start wearing out quickly. That also makes sense.

The difference probably is what you prefer: buying 4 tires the same time less often or buy 2 tires the same time more often.

But again: if there is a significant difference of 4mm or more, I would put the better two to the rear - so I voted "best to the rear".

Regards Jörg

Last edited by jof; 10th April 2008 at 17:38.
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Old 10th April 2008, 19:21   #11 (permalink)
nygaala
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Who need experts when you can develop your own theories?

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Old 10th April 2008, 20:59   #12 (permalink)
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So when most of the forum debators put their best tires on front axle.. (I don't)
is it then put on standard wheels ... http://www.eurovan2.com/forum/eurova...what-fits.html
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Old 10th April 2008, 22:24   #13 (permalink)
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Quote:
Originally Posted by jof View Post
This is definitely true. If you have a set with 2 "poor" tires (e.g. 3mm) and an almost new one (e.g. 7mm) you should put the better ones to the rear.
On my car this will never happen!

Quote:
Originally Posted by gazonk View Post
Das sieht aber blöd aus wenn der Reservereifen auf einer häßlichen Stahlfelge sitzt...
Mein Reserverad läuft auch mit, ich habe glücklicherweise eine Alufelge als Reserve!

Quote:
Originally Posted by Fred View Post
genau - auch ich montier die Besseren immer vorne - das wird sich auch durch Empfehlungen von Reifenhersteller oder Instruktoren nicht ändern. Keine Frage ein übersteuerndes Fahrzeug ist schwerer einzufangen als ein untersteuerndes, aber es ist mir trotzalledem viel lieber das Heck bricht aus, als ich rutsche unkontrolliert geradewegs von der Strasse. Gerade bei Fahrzeugen ohne elektronische Helferlein (wie bei meinem Zweitwagen) ist es wichtig immer noch reagieren zu können - und das geht nunmal beim Übersteuern besser als beim Untersteuern.

correct - forever and ever

genau - dann sind immer alle schön gleichabgefahren und wesentlich längere Intervalle stellen sich ein. Bei mir läuft sogar der Reservereifen mit - sind ein Reifenpaar besonders hinüber wird ein Reifen ersetzt und als 2. kommt der Reservereifen zum Einsatz. Bei den Reifenkosten wird der Reservereifen nicht ungenutzt und neuwertig spazierengefahren. Ein abgefahrener tuts zur Not auch.
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Old 11th April 2008, 00:08   #14 (permalink)
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Honestly speaking I not that concerned about the costs when it comes to tyres (but I wouldn't want to waste money on stylish alu wheels). My tyres are exchanged when there are 3 mm left or if they are unevenly worn. I simply wouldn't dream of taking any chances just to squeeze a few extra km's out of them and if you don't go below 3 mm, my claim is that you'll have sufficient grip and to me it seems worse to change the balance of the car by raising the front by 7-10 mm. So I stick to the official version with the better tyres in the rear rather than some homecooked theory!

Regards

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Old 11th April 2008, 00:25   #15 (permalink)
Werner807HDI
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Quote:
Originally Posted by nygaala View Post
... than some homecooked theory!

Regards

Lars

Not from me! I learned it! I am a mechanic!
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