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Mercedes Benz and AMG Owners

Discussion in 'Motors' started by Six6siX, May 15, 2014.

  1. Steedie

    Man of Honour

    Joined: Jun 29, 2004

    Posts: 19,451

    Location: Oxfordshire

    That we can agree on
     
  2. mjt

    Capodecina

    Joined: Aug 31, 2007

    Posts: 17,582

    All-season tyres are awful and possibly the worst match for a performance car.
    I have Goodyear Vector All-Seasons on my 150bhp Golf and the wheels spin up in the wet, spin up when it's hot, slide around in the wet and this is a 1.4 not a bloody modified GTI without a diff!

    Honestly, get UHP summer tyres and a second set of wheels with UHP Winters and do it properly.
     
  3. Spunkey

    Capodecina

    Joined: Oct 18, 2002

    Posts: 13,786

    Location: The land of milk & beans

    I think that's a C Class 'feature' as mine does it too, and has no matter what tyres I've put on it or the weather. I think it's due to the toe/caster on the front wheels.
     
  4. batfink

    Gangster

    Joined: Jan 6, 2006

    Posts: 245

    Doesn't solve the problem though. The official Mercedes solution is to use all-seasons. Summer tyres will cause crabbing at any time of year, as mine did early this morning.

    "Doing it properly" is not what this is about. Grip is not an issue on the car so switching wheels in the winter won't solve it.

    From what I've found out so far, it is most prominent on RHD cars and there is no easy fix.
     
  5. floatindolphin

    Wise Guy

    Joined: Jun 20, 2005

    Posts: 1,988

    Location: Derby

    My old C63 did this when I used to reverse/turn out of my work parking space .I thought something was knackered, good to know it's a "feature"!?
     
  6. Steedie

    Man of Honour

    Joined: Jun 29, 2004

    Posts: 19,451

    Location: Oxfordshire

    Can't say I've ever noticed this crabbing "feature" on the C43, I would say is it a RWD only issue? But batfink has a C43 also...
     
  7. CaptainRAVE

    Man of Honour

    Joined: Nov 21, 2004

    Posts: 30,655

    My wife’s TT does this sometimes. Never did workout why.

    As for AWD vs RWD, you can’t beat the craziness of the RWD of a V8. I also find my RWD gives me much more feedback than AWD. Could be that I am just more used to RWD.
     
  8. mjt

    Capodecina

    Joined: Aug 31, 2007

    Posts: 17,582

    Sorry, forgot you were going to fit all seasons to prevent crabbing. Don't do it!

    My C6 A6 does this too when it's on summer tyres. Must be the immense grip of my MPSS on my 4-pot TDI :p
     
  9. cuke2u

    Wise Guy

    Joined: Feb 27, 2006

    Posts: 2,273

    Location: East Sussex

    Anyone driven the new CLA yet? I have been offered a test drive myself, just need to find some time...
     
  10. leon4112

    Wise Guy

    Joined: Jul 24, 2006

    Posts: 1,813

    Got one booked for the CLA 35 when it comes in but my dealer has taken me around the 200 it has the new a class interior so i have a 24 test in A35 next Tuesday ill try and post some pics.
     
  11. cuke2u

    Wise Guy

    Joined: Feb 27, 2006

    Posts: 2,273

    Location: East Sussex

    Yes driven the A class hatchback and was very unimpressed with the engine, transmission and suspension package, but then I am coming from a 2017 A4. Let me know your thoughts on the CLA as I hope it'll be more refined
     
  12. [TW]Fox

    Man of Honour

    Joined: Oct 17, 2002

    Posts: 154,491

    It's the same car just as a 4 door not a hatch. It will be a little more refined because of the saloon boot but it won't make much difference.
     
  13. batfink

    Gangster

    Joined: Jan 6, 2006

    Posts: 245

    Surprised you haven't noticed it Steedie. What tyres are you running? Maybe I need some of those?! It's not a RWD issue but specific to the 4matic vehicles. The GLC 43 is most well known for this issue but it is also very common on the C43.

    I'm open to recommendations for alternatives but I'm in need of new tyres imminently and the stock Dunlop SportMaxx don't cut it. The only others I've found from other forums that might solve the problem are Conti SportContact 5 SSR (runflat!!) but they're £££.
     
  14. daz

    Capodecina

    Joined: Oct 18, 2002

    Posts: 23,846

    Location: Bucks

    I really like the CLA Shooting Brake, but it's priced almost the same as the C class.

    I thought about getting all seasons when I replaced my tyres on my GLC43 recently but decided to stick with the Michelin Latitude Sport 3s. Certain surfaces are worse than others but I can live with it to be honest.
     
  15. Spunkey

    Capodecina

    Joined: Oct 18, 2002

    Posts: 13,786

    Location: The land of milk & beans

    Not sure that's the case - as I said above my car does it and it's a 250d.
     
  16. cuke2u

    Wise Guy

    Joined: Feb 27, 2006

    Posts: 2,273

    Location: East Sussex

    It will though have the multi link rear suspension as standard, unlike the hatchback. If there is no difference between the A class I drove, and a saloon or coupe version with a different engine then I won't be going for it as it would be a far too greater downgrade from my current car.
     
  17. cuke2u

    Wise Guy

    Joined: Feb 27, 2006

    Posts: 2,273

    Location: East Sussex

    I have test drives setup for both the a class saloon and the cla for a week today. I expect the engine/gearbox configuration will not be the ones I wish to purchase but this will give me a chance to find out if the refinement and the ride quality is good enough...
     
  18. cuke2u

    Wise Guy

    Joined: Feb 27, 2006

    Posts: 2,273

    Location: East Sussex

    So I tested a new CLA 200 and found it to be be vastly superior to the awful A Class hatchback A180 I drove last time. Gearbox changed gears nicely and always seemed to know which one it needed to be in. The urban ride, with the multi-link rear suspension, was more sophisticated and the engine made a nicer noise, but was nicely suppressed.
    So good in fact I didn't bother testing the saloon...
     
  19. Chris Wilson

    Mobster

    Joined: Nov 28, 2003

    Posts: 4,092

    Location: Shropshire

    It's long been a trait of large Mercedes. They add a LOT of dynamic negative camber with lock, often a none linear amount, too. Turn the steering to a parking manoeuvre amount of lock and look at the now positive camber on the inside front wheel. it looks insane! That is what a lot of caster angle does to the inside front wheel... This is because they historically have abhorred static negative front camber as they are heavy cars and static negative reduces the braking tyre contact patch, especially with the current fad for extremely low profile stiff sidewall tyres on huge rims. So in order to maintain a competitive market handling balance they chose to add negative camber dynamically with lots of front caster, and on some models this is added none linearly, with more and more applied with steering lock. As such this results in the inside wheel having a lot of the tread very lightly loaded when manoeuvring, and the inside tyre "scrubs and hops" across the road surface as the tread blocks compress and relax. The added negative on the outside front tyre can also cause this hopping. Cold tyres or a loose surface make this trait even more apparent.