Why do my summer tires say M+S?

Discussion in 'The Garage' started by Throckmorton, Nov 10, 2012.

  1. Throckmorton

    Throckmorton Lifer

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    I bought a set of BF Goodrich g-Force Sport Comp 2 tires in 225/50/16 for my 1996 328is. They're summer tires but they say M+S. All I could find by Googling was an article from Continental about Chinese tires being mislabeled (http://www.conti-online.com/generat...s/archive/2009/pr_2009_11_25_ms_label_en.html) and this thread about General UHP tires having the M+S stamp http://forums.evolutionm.net/evo-x-...onsored-tire-rack/380462-m-s-rated-tires.html


    BTW I chose these tires because they are supposed to have a stiffer sidewall than some others, and the rubber compound is new and supposedly really good. I was looking for handling feel, not traction, since I only have 190hp so the 350 wear rating is good. I like the tread pattern too, not ricey looking like most other summer tires. Plus they're Made in the USA.

    Pic of the M+S marking:

    [​IMG]

    The tread:
    [​IMG]
     
    #1 Throckmorton, Nov 10, 2012
    Last edited: Nov 10, 2012
  2. God Mode

    God Mode Platinum Member

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    You can use them in the mud or snow. :)

    I like those BF tires. My goto for cheap summer tires were the BF g-force sport 1. They were usable in the winter and light snow when I was too lazy to change out.
     
  3. Jimzz

    Jimzz Diamond Member

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    The compound is for summer so it will not work well when cold, but the tread design meets the most basic requirments for M+S. Does not mean they will work well in M+S, just meet basic Gov standards.
     
  4. phucheneh

    phucheneh Diamond Member

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    They're 'sort of' all seasons, as said above. Rain, slush, and other soft stuff will be shed fairly efficiently by the tire, but as also stated, the actual traction associated with the rubber is going to be poor in packed snow/ice or such.

    Seems like as a general rule, most true 'all seasons' have siping. I may be wrong.
     
  5. SSSnail

    SSSnail Lifer

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    I had those exact tires on my car before I changed them out for the EC Conti DWS. The Conti, IMO, is much better, though the BFG had really good tread wear. The front tires lasted longer than 60K miles, still had some life on them when I changed them out. :eek:
     
  6. NutBucket

    NutBucket Lifer

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    I thought the solid rubber bands down the center of the tire would not allow an M+S rating? At least that's what I've noticed on every M+S tire I've looked at.
     
  7. SpatiallyAware

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    M+S is simply to satisfy some requirements for passing some roads up north. Same as requiring tire chains depending on condition.
     
  8. Howard

    Howard Lifer

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    M+S doesn't mean much. A lot of tires have it even though they shouldn't.
     
  9. phucheneh

    phucheneh Diamond Member

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    Pretty sure there are rather complex, siped all-seasons with solid grooves down the center. Or at least close to it.

    Those BFG's should shed water rather well. And like I said, I think that's about the same as 'mud and snow' as far as the rating is concerned...i.e. it will shed muddy slop or frozen slush (as in, move it from under the tire and out the sides/rear).

    But snow packed down onto the road (which is basically ice)...not gonna do so well. The M+S designation is purely about the tread pattern; not the rubber compound.
     
  10. Throckmorton

    Throckmorton Lifer

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    Interesting... so I guess if you have a certain amount of void space you get to put on the M+S stamp?
     
  11. jlee

    jlee Lifer

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    They're all-season-ish enough for the rating - check out a more serious summer tire like the Star Spec, which specifically says is not designed for use in cold temperatures.
     
  12. phucheneh

    phucheneh Diamond Member

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    Yup.

    From HowStuffWorks (couldn't find the actual RMA doc)

    Tires that have actually passed some kind of winter test get the 'snowflake' on the sidewall.

    Basically, this is a case of fairly uncommon under-promising, really. The manufacturer advertises it as a summer/performance/whatever tire, even through it meets the somewhat worthless standards for 'all season.'

    I think M+S can pretty much just be interpreted as 'it's definitely not just a track tire...but YMMV in cold weather.'