What tires did a '78 R100 roll out of the factory on?

Discussion in 'Airheads' started by iansanderson, Mar 27, 2011.

  1. Country Doc

    Country Doc Wanderer

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    2,789
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    somwhere north of Kingston, Ontario
    I have installed Roadriders on my own SWB slash 5 and a buddy's LWB slash 5. Both bikes are rock solid stable at 90+ mph, absolutely no weave at all. They are like freight trains. The last person to ride my SWB was convinced I'd converted it to LWB.

    Just a data point, not saying that it doesn't happen for supershaft, but it definitely DOESN'T happen for me.

    dc
    #21
  2. supershaft

    supershaft because I can

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    I am following you CD. I WISH I could say the same thing!! I tried three different sets of Roadriders before I gave up!

    BTW, most of my Roadrider weave issues are above about 70mph.
    #22
  3. Rapid Dog

    Rapid Dog bikes, booze, broads...

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    Strangel Living West of Hell, SoCal
    ...my '78 R100/7 came with Contis.
    #23
  4. dduelin

    dduelin Be Thou My Vision, Oh Lord Of My Heart

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    One of the tire makers, Dunlop I believe, says if you run a tube in a tubeless tire to select the next speed range up than spec so that would support running V rated tires instead of H. ( V sustained speeds 149+ mph, H sustained 130 mph )Does it make a difference in safety, not likely. My R100 is breathing hard at 110 mph and all done at about 115 and I rarely do that so I am comfortable ignoring the need to upgrade the speed rating.

    I ran Spitfire S11's for 30,000 miles, getting about 10,000 miles out of a rear and replacing them as a set though the front had more life in it. They are a fine choice for an airhead offering long wear with good grip. The center of the front tire has a groove that sometimes hunted on grooved pavement or on paint stripes but the forks and frames of these things are rather noodley to start with so wasn't a problem for me. The rear will wear kind of squared off too but again it wasn't a problem for me. This last go around I wanted to try something different so I choose Bridgestone BT45's. I think I had to get a V rated front in my chosen size of 100/90-19. The rear is 110/90. I like the 45's very much, the bike feels better on the side of the tire and it seems to turn in quicker. Hard to tell though, could just be the new tire feel though I now have 3000 miles on them. Lots of miles to go.
    #24
  5. supershaft

    supershaft because I can

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    Back in the eighties and nineties I ran a Spitfire on the back and a Conti TKV11 on the front of my LS. I could squeeze between 3000 and 3800 miles out of them but I could usually get two rears out of the front TKV. Man does tire mileage vary!
    #25
  6. dduelin

    dduelin Be Thou My Vision, Oh Lord Of My Heart

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    Anyone running race rubber on an airhead is twice, three, maybe four times the rider I am so it doesn't surprise me.
    #26
  7. Lornce

    Lornce Lost In Place

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    Not sure I ever saw a Bridgestone S11 Spitfire before the late '90's?

    :dunno
    #27
  8. Horatio0163

    Horatio0163 Been here awhile

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    Jul 18, 2009
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    How about some nice Duro tires? They have that vintage look and come in the listed sizes...

    3.25H19

    4.00H18
    #28
  9. Jasper ST4

    Jasper ST4 Guest

    Conti twin knockoffs. Chinese? I would be suspicious for that kind of price. I like to save money as much as anyone but tires are too important to not get top billing.
    #29