Studded winter tyres

Discussion in 'Hotham & Dinner Plain' started by snowtyres, Jul 9, 2017.

  1. snowtyres

    snowtyres Active Member
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    Studded Nokian winter truck tyres are now being used on all the ’Stadelmann' MAN and Mercedes Benz 4x4 snow clearing trucks at Mount Hotham. The use of these studded winter tyres is to improve the safety, efficiency and productivity in the VicRoads snow clearing operation and to reduce road maintenance costs on certain sections of the Great Alpine Road, between Harrretville and Omeo, that can be attributed to the previous use of heavy duty snow chains in this specialised snow clearing operation. Rud ‘Rotogrip’ automatic snow chains are fitted to the rear axle of these trucks and can be activated by the driver with a ' push of a button' if required in extreme conditions.

     
  2. gareth_oau

    gareth_oau Old And Crusty
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    The stud pattern on those almost seens random
     
  3. stansi

    stansi Dedicated Member
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    How often do the studs need replacing?
     
  4. snowtyres

    snowtyres Active Member
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    Stud location and numbers vary with each Nokian tyre size and tyre type.
    There are also restrictions in the Nordic countries as to the size of studs and the number of studs that are permitted for each tyre size.
    Studs are inserted in production by computer controlled robot......I hope this helps.

    This video will help with the understanding of studded Nokian tyres.
     
    #4 snowtyres, Jul 11, 2017
    Last edited: Jul 11, 2017
  5. snowtyres

    snowtyres Active Member
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    This video may not answer your question on how long last but will help with the understanding of studded Nokian tyres.

    Studded tyres need to be 'run in' when they are first installed to ensure maximium life.
    Studded Winter Tires
    Aren't studded tires super loud and don't they damage the road?
    Studded winter tires used to be loud and damaging to the road. Through innovations in our studding technology, such as the Eco Stud System and lighter stud material, we have minimized the noise immensely so that there is little noise difference between a studded winter tire and a traditional winter tire. Additionally, these developments make road wear a non-issue. If we compare studded tires of the past against modern studded tires with light metal studs we see that modern studded tires cause only 20% road wear in relation to typical studded tires of 60's and early 70's.

    Where are the tires studded?
    The majority of our winter tire lines are studded in our factories through a patented automated process. We use machines to ensure the proper insertion of the studs.

    How are the stud holes made?
    Stud pins in the curing mould imprint the stud holes in the tread or, in the case of heavy (industrial) tires, the stud holes are drilled.

    If studs work loose from studded tires, is it possible to replace lost studs with new ones?
    It is not possible to replace lost studs with new ones as they cannot be fixed securely to the old stud holes.

    Can I add/remove studs?
    Once a non-studded tire has been driven, it is not possible to add studs. Once a studded tire has been driven, it is possible to remove studs, but it is a very labor intensive, slow process as the studs must be removed by hand in a way that does not damage the tire. Once studs are removed, the tires cannot be studded again due to the dirt and debris that collects in the holes. For these reasons, we do not recommend removing studs from a studded tire.
     
  6. stansi

    stansi Dedicated Member
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    Interesting video, thanks for posting.
    One can only assume there is no legal use of "studded tyres" in Victoria for the general public.
    Correct Me if I'm wrong.
     
  7. Rover

    Rover Dedicated Member

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    I was of the understanding that the RMB in conjunction with Vic roads outlawed all traction devices except for diamond pattern chains a number of years ago.
    If this has changed, have they also considered reviewing other traction devices?
    If they have allowed these vehicles to use studded tyres, is it OK for me to use them on my suzuki or VW/audi as well?

    I would also think that the blade of the snow clearer would cause more damage that correctly fitted chains.
     
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  8. snowtyres

    snowtyres Active Member
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    These tyres are used for VicRoads 4x4 MTH GAR area snow clearing vehicles and are certainly not appropriate for your suzuki or VW/audi.
    You would benefit from using Nokian non-studded winter tyres such as the Hakka R2 http://www.nokiantyres.com/winter-tyres/nokian-hakkapeliitta-r2-suv/
    As previously posted “Rud ‘Rotogrip’ automatic snow chains are fitted to the rear axle of these trucks”
    When you watch this video the Hydrac snow clearing blades are designed with ’suspension’ and do not cause road damage.
    http://www.hydrac.com/produkte/kommunalgeraete/schneepfluege/
    Road damage is caused by older plows without this feature, that are still used at some of the other resorts, and when ‘bucket’ loaders are used for clearing
     
  9. Rover

    Rover Dedicated Member

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    So the question still remains..has the law requiring only diamond pattern chains for the GAR been changed?
    The rud rotogrip does not seem to be a diamond pattern.
     
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  10. FlatLander

    FlatLander Active Member

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    OK so the MAN trucks are 4WD. Therefore I agree with Rover here -
    1. Has the use of studded tyres now been made legal
    2. when signs say "All vehicles fit chains" that must include these vehicles
    3. roto grips were included the the "ban" for use on the GAR

    Therefore what has changed on the GAR? (apart from the fact that we get less snow every year)
     
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  11. Hully

    Hully Dedicated Member

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    Same same at Falls Creek.... less snow every year but more fitting of chains. We haven't had a 10cm snowfall for the season but chain fitting directions higher than I have ever experienced. I suggest RMBs trying to justify Resort Entry costs and existence.
     
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  12. FlatLander

    FlatLander Active Member

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    So true Hully and after current snowfall I have heard reports that chain fitting to all Vehicles is happening at Wallan this morning :)
     
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  13. Rover

    Rover Dedicated Member

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    I suggest you have a look at the GAR in its current condition, the snow ploughs have managed to rip up 2-3 sections over the past few weeks. And do so every year.the section just below the razorback being the worst....now full of potholes.
     
  14. snowtyres

    snowtyres Active Member
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    VICROADS SNOW CLEARING UPDATE, extract from Hotham ARMB Community News of June 2016
    http://developmthotham.com.au/downloads/images/Community_News_June_2016.pdf

    "VicRoads and the Mount Hotham Resort Management Board are committed to ensuring the safest delivery of snow clearing and ice treatment activities on the Great Alpine Road. In August last year, one of our snow clearing trucks travelling downhill came into contact with a third party vehicle which was stationary in the up-hill lane fitting wheel chains. Following the incident a review of the current practice around the fitting of wheel chains to vehicles engaged in snow clearing, ice treatment and maintenance activities was conducted. As a result, this snow season all of our vehicles engaged in snow clearing activities will be fitted with a combination of studded and non-studded winter tyres, and the ROTOGRIP® automatic chain system.

    Studded winter tyres provide superior grip to that of the winter tyre with no studs in the icy conditions. ROTOGRIP® is an automatic snow chain system specifically designed for vehicles that must be able to travel during hazardous winter weather. The chains can be engaged and disengaged from the driver’s seat while the vehicle is under way. In agreement with the MHRMB, our vehicles fitted with these innovative safety improvements will be exempt from the requirement to fit wheel chains. We will carry diamond pattern wheel chains at all times and fit these to our vehicles when conditions deteriorate to a level such that the combination of studded tyres and ROTOGRIP® automatic chains failed to provide the necessary traction.

    The ROTOGRIP® chains may not always be visible to other motorists. Signs indicating the use of these new safety systems will be displayed on vehicles engaged in snow clearing activities and will advise why diamond pattern wheel chains may not be fitted when motorists have been instructed that all vehicles must fit chains. VicRoads would like to advise all motorists travelling to and around the Alpine areas of the importance of taking extra care of the road this snow season and and reminds all visitors to the area to obey any reduced speed limits, instructions to fit chains and to take note of any changes to road conditions for their own safety and the safety of other road users.”

    Bryan Sherritt
    Regional Director VicRoads,
    North Eastern Region
    June 2016
     
  15. Rover

    Rover Dedicated Member

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    I wonder during the investigation the root cause of the collison was identified....
    was it
    car driver error
    Truck driver error
    chains not fitted as directed?
    or even
    truck driver not driving a in a manner to avoid collison?

    based on whats said, it would seem the truck strayed onto the lane coming the other way......why?