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Thread: 1971 r60/5 rear tire replacement

  1. #1
    Registered User yappo's Avatar
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    1971 r60/5 rear tire replacement

    the bike is hauling a sidecar.i would like to replace the rear tire with something designed for hack use.can any sidecarista's reccomend a good brand.the bike never is used off road.

  2. #2
    angysdad
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    what size tire?

  3. #3
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    Over the years there have been special "sidecar" tires with a square profile, in both 18" and 19". The idea is that the square profile will wear better. I currently have a Metzeler "Block K" 4.00 x 18 on my R100 rig. But I'm running a Kenda 19" on the front. It's an oval profile, so it's lower than a 3:25 x 19.

    My experience with sidecar tires is that they are old technology, bias ply, and very flexible due to the tall sidewalls. The tire flex doesn't help handling. And the old tire compounds don't necessarily provide better mileage than a contemporary bike tire.

    I suggest finding some cheap 4.00 x 18 or preferably 120/80 x 18 tires, and investing in some tire tools.

    pmdave

  4. #4
    "Running Out The Clock" grafikfeat's Avatar
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    There is also the evil of running a car tire on the rear.

    The hack tire on my rig is interchangeable w/ the front tire of the bike.
    A rolling spare if you will...
    I'm currently running a block tire on the hack. It won't fit under the fender so that option is gone for a bit.
    I have a motorcycle tire currently on the rear of the bike. I'm looking to renew the car tire on the rear prior to the rally.
    I have two rear rims. One w/ a bike tire the other w/ a car tire for when the tub is off I switch.
    "Stupidity, if left untreated, is self-correcting."

  5. #5
    "Running Out The Clock" grafikfeat's Avatar
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    Matter of fact... I renewed it today...

    A R195/75/15...
    Attached Images Attached Images
    "Stupidity, if left untreated, is self-correcting."

  6. #6
    "Running Out The Clock" grafikfeat's Avatar
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    Quote Originally Posted by pmdave View Post
    ...I suggest finding some cheap 4.00 x 18 or preferably 120/80 x 18 tires, and investing in some tire tools.
    First... Sorry for the hijack...
    I would follow this advice from Dave.

    I'm thinking of going to a 17"X5.5" RS rear wheel so I can get into some dualsport tires for winter travel...
    "Stupidity, if left untreated, is self-correcting."

  7. #7
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    There may be limited clearance for a wider tire. And there are lots of knobbies in 18" sizes. For my "dual sport" R100/Ural, I have alloy rims laced with heavy guage ss spokes, 18" front and rear. I run an 18" "rear" tire backwards on the front. I reserve the serious knobbies for excursions on technical roads, although knobs wear much better on pavement than I would have predicted.

    I also prefer a round or preferably oval section tire on the front. A flat profile tire, especially a car tire, causes steering problems. When the side of the flat tread contacts the side of a groove or pavement "rut" it suddenly steers the wheel in that direction. IMHO the maximum width of a front tire, even with trail reduction, is 135.

    See you at the rally in Redmond.

    pmdave

  8. #8
    "Running Out The Clock" grafikfeat's Avatar
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    Quote Originally Posted by pmdave View Post
    I also prefer a round or preferably oval section tire on the front.
    A flat profile tire, especially a car tire, causes steering problems.
    When the side of the flat tread contacts the side of a groove or pavement "rut" it suddenly steers the wheel in that direction.
    How does that translate to the Can-Am?
    Would m/c tires improve handling of one?
    "Stupidity, if left untreated, is self-correcting."

  9. #9
    John D'oh
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    Interesting question...

    I use an 18" block K on the front for a good long run and I find they handle just fine for my machine and style - and most any cheap 18" standard tread design on the rear - (six ply if I can find one). Reason: The rear tire gets ground off fairly rapidly due to extra weight, side loading forces and power. I have a $45.00 Cheng Shin MN120/90 on the back now. Looks like an old Continental tread design. I've had good luck with them going 4 or 5K. I have a set of Metzler Sahara EnduroÔÇÖs mounted on spare wheels for mud and snow. The chair tire is round section and happens to be a Bridgestone Spitfire.

  10. #10
    "Running Out The Clock" grafikfeat's Avatar
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    Quote Originally Posted by s09rwmb View Post
    I use an 18" block K on the front for a good long run and I find they handle just fine for my machine and style - and most any cheap 18" standard tread design on the rear - (six ply if I can find one). Reason: The rear tire gets ground off fairly rapidly due to extra weight, side loading forces and power. I have a $45.00 Cheng Shin MN120/90 on the back now. Looks like an old Continental tread design. I've had good luck with them going 4 or 5K. I have a set of Metzler Sahara EnduroÔÇÖs mounted on spare wheels for mud and snow. The chair tire is round section and happens to be a Bridgestone Spitfire.
    My front goes first due to toe in. Scuffs the hell outa them. Rear is a car tire. Nice having a 40k mile tire. More so in the snow.
    Reading the above makes me think that the rear gets trashed so easily because "any cheap 18" standard tread design on the rear" would be a prime suspect.
    Can you find a car tire for the rear?
    "Stupidity, if left untreated, is self-correcting."

  11. #11
    John D'oh
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    Quote Originally Posted by GrafikFeat View Post
    My front goes first due to toe in. Scuffs the hell outa them.
    My rear tire went first because I ran the piss out of my hack. I quit buying any old 'expensive' rear tires when I realized (a friend pointed out) that wheel slip under load with a heavy throttle hand and a powerful motor ‘hooked up’ just spins the rubber right off the carcass of expensive tires as fast as it does cheap ones. I thought about car tires years ago (in the 70’s) but really never needed to nor did I want to involve myself in the added complexity. A hack is no longer a motorcycle which is precisely why car tires probably make sense I would guess. They are not generally subject to the tire requirements of a solo bike.

    BMW and KS photo taken in this past decade I believe - follow this link
    http://www.torpedo-emscher.de/wr/uni..._ks750r12l.jpg

    This is not mine. Nice old Indian outfit. Gespanne USA
    Last edited by Na Cl K9; 08-08-2012 at 04:06 PM.

  12. #12
    "Running Out The Clock" grafikfeat's Avatar
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    I have two rear wheel rims. One w/ car tire and one w/ M/C tire.
    Car tire makes a heckuva difference in the snow and fire roads w/ loose gravel.

    It's my opinion that a m/c tire is a waste on a sidecar rig's rear since they are so sticky/soft for obvious reasons. Not to mention less contact patch.
    I will not ride my car tire on a motorcycle sans hack.
    Side walls aren't designed for those kind of stresses.

    Neat rig... Thanks for sharing.
    "Stupidity, if left untreated, is self-correcting."

  13. #13
    John D'oh
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    I know that sidecar...

    This is not my hack either...
    Last edited by Na Cl K9; 08-08-2012 at 04:06 PM.

  14. #14
    "Running Out The Clock" grafikfeat's Avatar
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    Cool ...me too...

    Only I didn't own it yet in that image.
    "Stupidity, if left untreated, is self-correcting."

  15. #15
    angysdad
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    Is that the original colour on the 1200C? I really like it.

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