Both front tyres worn on the outside?

[Number_Cruncher]

Rotating tyres on many Mercedes Benz is a part of the service schedule, and as mentioned above is both the necessary and the right thing to do on these cars.

 

[wheels-inmotion]

Rotating tyres on many Mercedes Benz is a part of the service schedule, and as mentioned above is both the necessary and the right thing to do on these cars.

What if the sizes are staggered.... does this mean the high end marques are denied this necessary to rotate the tyres?

 

[renault12ts]

^ Agreed again. Staggered and directional. Can't even change them to different sides (even if it did make any difference).

 

[renault12ts]

Rotating tyres on many Mercedes Benz is a part of the service schedule, and as mentioned above is both the necessary and the right thing to do on these cars.

But why? Necessary from what point of view? Right? In other words it would be wrong ie dangerous, not to do so? I would think that WIM would be the most qualified to answer on this and many forums.

 

[x332race]

Have never found it necessary to "rotate" tyres on any of my cars...alright, the driven wheels wear faster than the non-driven but have not had any uneven wear except when alignment was out. If you have uneven wear, get proper alignment...go and see WIM.

Anyway, cannot as previous post, cannot rotate tyres front to rear due to staggered size.

 

[wheels-inmotion]

But why? Necessary from what point of view? Right? In other words it would be wrong ie dangerous, not to do so? I would think that WIM would be the most qualified to answer on this and many forums.

I've offered a few reasons above and i would agree in a perfect world it's always preferable to belay oversteer but it's not a perfect world.

As said a correctly calibrated MB would not suffer abnormal tyre wear other than the radii issue. Believe it or not the MB has one of the best chassis out there, the reason for the owners complaints is not the car it's how the ( correction centre) is reading the data.

If there's issues with wear then deal with the issues, migrating tyres in an attempt to capture additional tyre life is fools gold.

 

[alexander patie]

wheels in motion, have you seen how the tyres will wear on a mercedes if not swapped? i really must assume you have, and genuinely believe your credentials to comment here.

so you are aware that rears may be down to the limit in the centerline but show as much as 4-5mm at the edges, meanwhile the fronts will be illegal on the shoulders but have 4 mm left in the center line. mercedes specify wheel rotation for good reasons, why is it fools gold to get an extra 30 or 40% tyre life? we see so many cars with differential front/rear tyre sizes and they always have this wear pattern, obviously we also see a tendency for front wear to be worse on inner or outer edges, but always with plenty more in the middle than either edge. presumably your focus is more on steering neutrality and not economy, i am not talking safety issues here.

 

[Number_Cruncher]

But why? Necessary from what point of view? Right? In other words it would be wrong ie dangerous, not to do so? I would think that WIM would be the most qualified to answer on this and many forums.

Necessary from the point of view that if you don't, you will get uneven tyre wear - even when the pressure and wheel angles are correct.

Right in that this is what MB recommend and include in their servicing schedule.

I didn't say dangerous.

Of course, you can't do this when your car has a staggered set up, and, of course, you need to take care with asymmetric and directional tyres. In these cases, you have to suffer and renew the tyres earlier than might be the case with a more even wear pattern.

The really reckless thing to do is to try to compensate by changing the tyre inflation pressures, erroding the differential between front and rear as specified by MB.

>>I would think that WIM would be the most qualified

I'm not going to start trading qualifications

 

[alexander patie]

"I'm not going to start trading qualifications"

so what gives? i suppose you're an astro engineer now!

odd how the asymetric tyre size cars we see are way more likley to be running illegal tyres, especially at front. also the wider and lower profile the tyre, the more likely it is to be illegal. give me a nice 195/65R15 on a lovely 124 any day.

 

[whitenemesis]

Staggered wheel set-up on mine. Tyre wear is fairly even across width and front to rear.

Edge wear on fronts is down to cornering, roundabouts or just speed.

Centre wear on rears is pressure.

Experiment with pressures and moderate cornering speeds.

I change a set every 12 months(ish) front and rear about the same wear.

 

[alexander patie]

Staggered wheel set-up on mine. Tyre wear is fairly even across width and front to rear.

Edge wear on fronts is down to cornering, roundabouts or just speed.

Centre wear on rears is pressure.

Experiment with pressures and moderate cornering speeds.

I change a set every 12 months(ish) front and rear about the same wear.

i am sorry, but you are just living up to the misinformed stereotype here!!

you say tyre wear is even - but also that your shoulders wear faster on front and centers on rear? so you say this is down to cornering at the front and too much pressure at the rear! do you deliberately use to much pressure at the rear? do only the front tyres wear when cornering? these are much repeated myths that bear no scrutiny, sorry to pee on your chips here but you are much mistaken.

 

[scumbag]

these are much repeated myths that bear no scrutiny, sorry to pee on your chips here but you are much mistaken.

this, providing the link works, is from the horses mouth.

Interactive Owner's Manual [In depth | Operation | Tyres and wheels]

I only did the C class, so other styles may indeed be different.

 

[rf065]

this, providing the link works, is from the horses mouth.

Interactive Owner's Manual [In depth | Operation | Tyres and wheels]

I only did the C class, so other styles may indeed be different.

"You may fit a spare tyre* against the direction of rotation."

You learn something new every day

Russ

 

[bobtictoc]

You should always have the better tyres on the rear; so putting part worns from the front is not the best way to go. As an alternative I would suggest buying new tyres in pairs; put the new ones on the back and move the part worns to the front.

hi smiley, please would you tell me why put the best tyres on the back. it seams to me that if all tyres are sound but 2 of them are newer i would put the best ones on the front. i would think the newer ones would have more grip in the wet and it's no good being able to if you can't stop. i may be missing something but let me know what it is please ..bob..

 

[Olivier]

Hi Bob,
here is a good link
Michelin's Driving America's Safety Initiative Empowers You to M - Video

 

[Number_Cruncher]

>>i may be missing something but let me know what it is please

The thing you are missing is that rear axle stability is FAR more important than front wheel grip.

This is true to the extent that;

- major tyre manufacturers recommend fitting the best tyres to the rear
- in pre ABS days, rear brake locking was never allowed, while front axle braking was unregulated. This meant manufacturers had to fit expensive valves and restrictors to prevent rear locking
- in the days of mixed tyre use, cross plies could not be fitted to the rear while radials were fitted to the front.

These three items together demonstrate that the unexpected loss of grip on the rear axle is serious bad news.

Under braking, for example, owing to load transfer, the front wheels are heavily loaded, and can generate lots of braking force - the rear wheels are unloaded by load transfer, and need all the grip they can get.

 

[bobtictoc]

hi if as you say tyres on the rear of a mercedes wear down in the middle can you tell me how the tyres know what car they are on. i always wondered..bob

 

[rf065]

hi if as you say tyres on the rear of a mercedes wear down in the middle can you tell me how the tyres know what car they are on. i always wondered..bob

A better way to say it would be that the rear tyres wear in the middle when set to Mercedes recommended pressures.

Russ

 

[renault12ts]

A better way to say it would be that the rear tyres wear in the middle when set to Mercedes recommended pressures.

Russ

Would you recommend lower pressures?

 

[timskemp]

Would you recommend lower pressures?

Lower tyre pressures cause increased heat build up due to flexure of the tyre. This encourages failure of the tyre, which is not good.