The darkside, car tire on motorcycles

Discussion in 'The Perfect Line and Other Riding Myths' started by elkgrichard, Sep 19, 2014.

  1. Rollin'

    Rollin' does it come in black?

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    I had been trying more aggressive snow tires as a test for a gravel travel ride I had planned for this year but I had to cancel that trip. Since I don't need the aggressive thread I may try an all-season.

    The General Altimax Arctic has been working well but I do like to try other options.

    [​IMG]
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  2. cjclint

    cjclint Adventurer

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    Have not tried the General Altimax but pretty sure the Pirelli has a rounder profile. It will handle better and will have the added benefit of being a run flat tire
  3. Jarlaxle

    Jarlaxle Bregan D'Aerthe

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    I know one darksider running a GY Eagle Ultra Grip...that is a PERFORMANCE (V-rated) winter tire. He loves it on his Wing.
  4. cocheese72

    cocheese72 Adventurer

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    What kind of mileage do they typically get? It may be worth a try, but the Yoko works well and is symmetrical. If I get 25k+, I may just stick with it.
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  5. ianbh

    ianbh Been here awhile

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    U should follow your own advice. Ian, Iowa
  6. CaseyJones

    CaseyJones Ridin' that train

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    You put it out for discussion. I discuss.

    Some people don't hear what they want, so they react like spoiled children. Or drunken football fans at a lowbrow sports pub.
  7. cjclint

    cjclint Adventurer

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    cocheese72,
    Really no clue what to suggest on tire mileage, it varies greatly between riders depending on road surface and aggressive riding. In the Ozarks where I ride the twisty roads have an abrasive surface and are hard on tires. I only averaged about 10,000 miles to the wear bars on most of the better run flat tires like yoko advid envigor, michelin Alpin, bridgestone driveguard and only 6,000 on the stock bridgestone rear MC tire. Some of the more aggressive goldwing riders will go through tires considerably faster than I do on this type road.
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  8. Ride-a-lot

    Ride-a-lot Been here awhile

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    I had read for years about people who ran CT and really liked them. About the only people constantly spouting off against the practice were people who had never tried one. So after much reading I decided the only way to have an informed decision was to go ahead and mount one up.

    On my F650GS I mounted a General G Max 205/50 17 at the end of last summer. Just as with mounting any new tire the handling was slightly different. After 50 miles or so I became used to the new feeling and then slowly over several hundred miles kept increasing my cornering pace. I kept waiting for the tire to do something unexpected the harder I pushed it in the corners. That never happened. Now with about 6k miles on the tire I'll say it works better than I had any expectation of it working.

    I'm back to riding my normal pace which after years of racing is a bit quicker thru the corners than most. I frequently ride with the local sport bike group often 2 up. My wife takes punctures during the rides and gets great pictures of the others mid corner. Most of these guys are on liter bikes or 6 hundreds. Those that have ridden with us over the years don't mention that my bike is not a sport bike and also makes about 100hp less than most of the other bikes. We happen to live in some of the best riding in the country. Corners are every where.

    Several times when we show up for a ride someone who has never ridden with us will ask if I'll be able to keep up since we are 2 up with a not quite sporty bike. Those that know us will tell that person that the old couple on the touring bike are just going to embarrass them in the corners and get great pictures while doing it.

    I've now used the car tire on dozens of these rides. It does tend to hurt the ego of the younger guys that an old fart with a car tire on the back has no trouble riding around them.

    The downside to the tire is that it is more susceptible to following ruts and grooves in the pavement. This can be mitigated by riding in or outside the rut with enough room from the rut that the rear tire isn't touching it. For unavoidable grooves the car tire follows the grooves more than a bike tire does but it's easy to control and just a slight annoyance.

    1520956101956120164767.jpg
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  9. cocheese72

    cocheese72 Adventurer

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    Isn't that a stock 140/80-17? If so I am shocked a 205 went on.
  10. Ride-a-lot

    Ride-a-lot Been here awhile

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    That is the stock size. The general tire had the narrowest recommended rim width in the size I needed to maintain the stock ride height. The only problem I encountered was I had to remove my auxiliary Camel fuel tank for clearance.

    I used the tire that a few people had reported using on their V Strom
  11. Jarlaxle

    Jarlaxle Bregan D'Aerthe

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    No, you don't. You do not discuss. You flame, troll, and thread-shit.
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  12. Chaplain

    Chaplain Been here awhile

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    Many (too many) years ago my High School chemistry teacher advised us "when you take an exam at University you may be asked a question like 'will this [chemical] reaction take place? The answer will of course be yes or no; but, you may also be asked: why? You may know that the reaction will or will not take place, but you may get stuck on the why. If you get stuck try just answering "By experimentation it has been determined that...."." The point made was that experimentation, by definition, was and is always a valid scientific means of determining an answer to a question.

    Steam engines were running things before the laws of thermodynamics were correctly stated or understood. How could this possibly happen? By experimentation. I don't know if a car tire will fit on my g650gs. Maybe the one that fits on a F650GS will work. I don't know if I would try a car tire. But, riding 2 up with cases and gear puts my bike near the design limits. A car tire would give a better margin of error (safety margin) with a max or near GVW load.

    Darksiders are experimenters. All Motorcyclists are experimenters. We all experiment when we go into a well known corner just a little hotter or a little deeper than last time. Every time we enter a corner we have never ridden before, we experiment. Most of the time we are successful in predicting the outcome. If we were absolutely risk adverse we would never venture out onto the public highways with anything less than a M1A2 main battle tank. But we do. We ride everything from little postie bikes to Hondayamaharleypotomai. (which is the correct plural of Hondayamaharleypotomus) And we like doing it.

    Thanks to all the experimenters who have shared what they have done and how it worked out.

    While the data is (admittedly) anecdotal, there comes a point when consistent predictability can emerge from a data set (trends become observable before they are quantifiable), even if the data set is not structured in a strict controlled study. There have been many reported experiments. At this point it seems to this observer that for some bikes and riders, and for some applications, that some car tires that fit on the bikes are a valid solution to all of the compromises we all make when we select a bike, a load, a ride, and a tire.
  13. Jud

    Jud Long timer

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    If you look up one of my early posts in this thread I had nearly the exact same experiences as you have had. From thinking it was crazy, to wondering if I could "put up" with the "terrible handling" if I did try it to finally trying it, slowly working up to the limits and discovering the damned thing works better than many motorcycle specific tire options that many on here swear by and swear would be "better" than a damned ole car tire. Same issues, following ruts and since I do a lot of off tarmac stuff, really wasn't the tire for me at the time. BUT,,,,, I have nearly stopped riding off tarmac on my Super Tenere so the next rear might well be a CT if I get off my lazy ass to make a brake stay that will allow some extra width.
  14. randyo

    randyo Long timer

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    I encounter too many rough roads, tracking the grouves & ruts became more than I wanted to deal with, so I went back to MC tires for 3 seasons.
    Winter, however, snow, ice, MC tires don't even come close to what a winter car tire provides, I mean No Comparison
  15. Jbrjbr21

    Jbrjbr21 Been here awhile

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    A battery for a motorcycle cost twice as much as a ridding mower. Because we will pay for it. Tires are a rip off on bikes. My tire s toast on my 09 hd it's a 180 18in road glide . Would appreciate a recomendation ct. Not afraid to try. Some people think outside the box.
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  16. cocheese72

    cocheese72 Adventurer

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    You sure it's 18" not 180/65-16?

    Plenty of choices in the 195 or 205 range. Side profile depends on how close you want to get to stock. 55 or 60 work for most people.
  17. Jbrjbr21

    Jbrjbr21 Been here awhile

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    Yea 18 front and back 110 SE
  18. cjclint

    cjclint Adventurer

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    jbrjbr21
    We are using a 195/55-16 Yokohama avid envigor run flat on a 2009 Ultra. Slightly smaller diameter than stock tire providing slightly more power in 6th. gear.
    Just saw your last post, No clue what to use on 18" rim
  19. Jbrjbr21

    Jbrjbr21 Been here awhile

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    The110 has plenty of power did tire fit without modification? I've seen 205 smallest in 18 in size.
  20. cjclint

    cjclint Adventurer

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    Thought the road glide came with 17" front and 16" rear