Michelin Road 5 introduced - BMW F800 Riders Forum & Registry



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  1. #51
    Sundog52's Avatar
    Points: 4,913, Level: 47

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    Geoff
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    '13 F800 GT
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    '94 R1100RS
    Quote Originally Posted by N4HHE View Post
    Road 5 wears about 1/3rd faster than PR4 and significant scalloping.

    All motorcycle tires scallop, the Road 5 more than most.
    I think the tire wear jury is still out on this
    Sundog 

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  3. #52
    Sundog52's Avatar
    Points: 4,913, Level: 47

    Real Name
    Geoff
    Location
    Birmingham in Alabama
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    Motorcycle
    '13 F800 GT
    Motorcycle
    '94 R1100RS
    Quote Originally Posted by N4HHE View Post
    .....

    Scalloping occurs because off-center the distance to the axle from tread is less than it is from the center of your tire. That creates a different rolling diameter. But the road moves at the same speed over these differing diameters. Something must give.
    So, how do racing tires (slicks) respond to this phenomenon? Do they "scallop/cup" too?
    Sundog 

  4. #53
    N4HHE's Avatar
    Points: 16,513, Level: 88

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    David Kelly
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    Madison, AL
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    Motorcycle
    '16 FJR1300A
    Motorcycle
    '09 FE450
    Motorcycle
    '07 F800S
    Quote Originally Posted by Sundog52 View Post
    So, how do racing tires (slicks) respond to this phenomenon? Do they "scallop/cup" too?
    Yes. But in the case of a road race tire it is kept sliding all the time. A scalloped street tire will be relatively smooth but for tread blocks worn unevenly across the block. A race tire will appear to have been surfaced with a wood shaper, very rough. Scalloping on a treaded tire occurs when these forces cause the tread blocks to flex. Less of this flexing on a slick race tire but the stresses on contact patch are similar but greater due to racing.
    2016 Yamaha FJR1300A; 2016 Beta 430RS; 2007 BMW F800S; 2009 Husaberg FE450; 2016 Subaru Outback; 2018 F150; 2013 Tesla Model S 85; 1983 Porsche 928S; 9 cats 

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