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1Back to top Go down   Radial or Bias Ply for 1985 K100RT Empty Radial or Bias Ply for 1985 K100RT on Tue Sep 12, 2017 2:20 pm

flyinglow

flyinglow
Silver member
Silver member
I have a 1985 K100RT and do mostly touring, no sport riding. I see lots of discussion on radials vs. bias ply. Why would radials be better? I can't find any radials that fit the stock wheels?

Stock Tires Size, Front 100/90 V 18, (100mm wide x 90mm high), Rear 130/90 V 17 ( 130mm wide x 117mm high).

I see many are using a slightly wider and lower profile tire;

Front, 110/80 V18, ( 110mm wide x 88mm high), ( 4mm drop in Dia., 2mm drop in height ). Rear, ( 140/80 V17 ), ( 140mm wide x 112m high ), ( 10mm drop in Dia., 5mm drop in height ).


I've seen these as some of the more popular bias ply tires used; Pirelli Sport Demon, Bridgestone Battlax BT45, Michelin Pilot Activ, AVON AM26 Roadrider. Any suggestions?

    

2Back to top Go down   Radial or Bias Ply for 1985 K100RT Empty Re: Radial or Bias Ply for 1985 K100RT on Tue Sep 12, 2017 2:42 pm

charlie99

charlie99
VIP
VIP
really depends on riding style and road surfaces

whats good out here may not suit your road conditions and surfaces ...weather patterns etc

but I find on an rt style sport demons do the job for me ...light and active feel

many prefer the bridgestones ..and have great reports

good luck


__________________________________________________
cheezy grin whilst riding, kinda bloke ....oh the joy !!!! ...... ( brick aviator )

'86 K100 RT..#0090401 ..."Gerty" ( Gertrude Von Clickandshift ) --------O%ORadial or Bias Ply for 1985 K100RT Au-log10
    

3Back to top Go down   Radial or Bias Ply for 1985 K100RT Empty Re: Radial or Bias Ply for 1985 K100RT on Tue Sep 12, 2017 3:25 pm

Born Again Eccentric

Born Again Eccentric
Life time member
Life time member
@flyinglow wrote:I've seen these as some of the more popular bias ply tires used; Pirelli Sport Demon, Bridgestone Battlax BT45, Michelin Pilot Activ, AVON AM26 Roadrider. Any suggestions?
Like Charlie says - choice really depends on riding style and conditions (road and weather).

I have always used Avon Roadriders, but switched to try out a pair of Dunlop Street Smart tyres this year. I have had no problems with the roadriders and get pretty good wear out of them and good grip in wet and dry conditions. The Street Smarts were absolutely fine to begin with but after just 4500 miles, the rear is close to its wear limit and won me an "advisory" on my MoT (annual state inspection) - probably has another 750 -1000 miles left in it. Compare that with my usual 9500+ miles on a Roadrider rear tyre.

I'm too tight to fork out the extra for the sports demons of pilot activs - so probably will default back to the roadriders at the next change as they suit my riding well enough.


__________________________________________________
Radial or Bias Ply for 1985 K100RT Uk-log10Radial or Bias Ply for 1985 K100RT Sco-lo15Radial or Bias Ply for 1985 K100RT Eu-log10
Paul Radial or Bias Ply for 1985 K100RT 905546712

"Heidi" K100LT 1991 (Grey) (VIN 0190172 Engine No. 104EB 2590 2213) - 5th owner. January 2014 (34,000 - 61,000 miles and counting....)
"Gretel" K100LT 1989 (Silver Grey) (VIN 0177324 Engine No. 104EA 2789 2211) - 4th+ owner. September 2015 (58,500miles and counting....). Cat C Insurancewrite-off rebuild Feb 17
"Donor" K100LT 1990 (Red) (VIN 0178091 Engine No. 4489 2024) - 6th & final owner (crash write-off now donor bike). June 2012 (73,000 miles) to November 2013 (89,500 miles)
    

4Back to top Go down   Radial or Bias Ply for 1985 K100RT Empty Re: Radial or Bias Ply for 1985 K100RT on Tue Sep 12, 2017 5:12 pm

jbt

jbt
Silver member
Silver member
The rims are too narrow to get any benefit from a radial tyre. Yet they're a good upgrade concerning the lasting.
I 'm not sure that you'll find any radial tyre that would fit the dimensions of your K100 (maybe Contigo or Avon Storm?)
I found for the rear wheel of my K1100LT a trail radial tyre, that originally fits the F650GS, the Bridgestone BW502. Excellent grip on any surface, and dramatic improve of lasting. I've already rode 5000 km with it and it's almost new, whereas diagonal tyres I used hardly reach 3000km before they're out.

    

5Back to top Go down   Radial or Bias Ply for 1985 K100RT Empty Re: Radial or Bias Ply for 1985 K100RT on Tue Sep 12, 2017 5:38 pm

AL-58

AL-58
Life time member
Life time member
Good tyre wear is not unique to radial tyres. Back when the K100s were new and I used to do may kms a year, Metzeler Marathons would do 20,000kms front and around 12,000kms rear.

Currently my RT is on 100/90-18 and 140/80-17(radial rear only) Pirelli Scorpio Trails. My bike does do some dirt roads so its worthwhile to me. Those are the sizes that were available or I would also have a 110/80 front.

The bike is light handling, agile and handles well. Around 3000kms and wearing well so far. Should be good for 8k or more. That said they werent expensive to begin with.

Al


__________________________________________________
'87 K100RS/HRD sidecar (1100 motor)sc25
'92 K100RS-16v (Paint it Black)

'87 K100RT with Paralever backend

"When I'm too old and too foolish to handle a sidecar I'll buy a Sportsbike"

Radial or Bias Ply for 1985 K100RT K-dogs10
    

6Back to top Go down   Radial or Bias Ply for 1985 K100RT Empty Re: Radial or Bias Ply for 1985 K100RT on Tue Sep 12, 2017 5:52 pm

Stan

Stan
Life time member
Life time member
I just replaced my Sport Demons with new versions of the same...$315(Aus) a pair on the rim and balanced. I did not even look at other brands, so how expensive/cheap are the other types of tyres?


__________________________________________________
1983 K100basic vin 0003960 colour red GONE
1987 K100RT vin 0094685 colour, orange peel, sorry, pearl..GONE
F800R black
    

7Back to top Go down   Radial or Bias Ply for 1985 K100RT Empty Bias ply or radial on Tue Sep 12, 2017 7:47 pm

klompy the grey brick

klompy the grey brick
VIP
VIP
Hi all;
I run Pirelli Demons 110 on front and 140 on rear on standard Y rims....works great.

On my K1100LT I have been running radials Michelin GT Pilot Road 4's 120-70-17 front and have used and worn down a 160-60/18 (4.5inch K1100RS rim)Michelin Pilot Road 4 works great clears swing arm nicely and also on the original K1100LT rear rim Michelin GT Pilot Road 4 150-70-17 which is the smallest Michelin Pilot Road 4 available which I will be trialling to Tassie and back in October, expect even better results.

I have heard that a Michelin Pilot Road 3 140-70-17 works great on K100 rear will try that next time....although tempted to reallocate the 150 radial to the K100RS for giggles.
The joy of trying to wear your tyres out is the chance to try something new.

WARNING radial tyres that are not common are expensive....K100 and even K1100 sizes are not so common when even 250 Motorcycles run wider tyres than we do. LOL

Cheers KKlompy


__________________________________________________
KKlompy Radial or Bias Ply for 1985 K100RT 2854237993
"Grace" 1984 K100RS Silver VIN 0019026 Mitt eine Staintune Zorst.
"Olivia" 1997 K1100LT Dark Grey VIN WB1052600W0237453.









Chassis number0019026
Vehicle code0503
SeriesK589
ModelK 100 RS 83 (0502 ( 0503 )
Body typeK 100 RS 83 (0502
Catalog modelECE
Production date1984 / 07
Engine0513)

Radial or Bias Ply for 1985 K100RT Au-log10


    

8Back to top Go down   Radial or Bias Ply for 1985 K100RT Empty Re: Radial or Bias Ply for 1985 K100RT on Wed Sep 13, 2017 3:26 am

Holister

Holister
Life time member
Life time member
If its just touring you'll be doing then make sure you get a dual compound tyre which are slightly harder in the middle for longer wear, like the Batlax BT-45. Steer clear of single compound tyres like the Sport Demon. They're a really great tyre BUT unless you're into hard cornering, they'll wear out very quickly.
There are some adventure/touring radials about that would give you good milage also but, just my opinion, I don't think you really need radials for cruisey type touring. Save your money and buy bias ply tyres.

Some tips for longer wear.

  • Make sure you run slightly higher pressures than what's in the riders manual. 38 to 42psi rear seems to be what many here use depending on conditions and bike/tyre/rider. 3psi less in the front.
  • Accelerate smoothly from lights etc
  • Set yourself up for the corners. Correct line and speed going into a corner will mean little or no braking and will give you a smooth exit.
  • Accelerate back up to speed while you're coming out of the corner so you use the side tread of the tyre instead of the middle.
  • Enjoy the winding roads in preference to the freeway.Very Happy


I've managed to get 15,000km rear and 21,000km front from from a set of Sport Demons.
My personal best was 18,000km rear on a 140 Avon Azaro 45 radial and 28,000km a 120 Bridgestone BT-023 on the front. Both of these tyres are no longer available.
This was on my K100 naked.


__________________________________________________
1988 K100RT VIN No. 0094680
1989 K100RT VIN No. 0097367 (naked)
1996 K1100RS VIN No. 0451808
Radial or Bias Ply for 1985 K100RT Austra12 Fuel: 95 Octane
Engine Oil:Nulon Full Synthetic 15W50
Gear Box Oil: Nulon Synthetic 75W90
    

9Back to top Go down   Radial or Bias Ply for 1985 K100RT Empty Re: Radial or Bias Ply for 1985 K100RT on Wed Sep 13, 2017 4:46 am

MartinW

MartinW
Life time member
Life time member
I've heard good reports about Shinko tyres on Bricks they do a touring tyre and a sport touring tyre. And they are reasonably priced, apparently they bought the molds and technology of Yokohama. I'll probably get them on my next change.
Regards Martin.

    

10Back to top Go down   Radial or Bias Ply for 1985 K100RT Empty Re: Radial or Bias Ply for 1985 K100RT on Wed Sep 13, 2017 5:24 am

MartinW

MartinW
Life time member
Life time member

The Shinko Osaka Story


Established in 1946, the Shinko Group began as a manufacturer of bicycle tires and tubes in Osaka, Japan that today has become a burgeoning manufacture of rubber products.
In 1998 the Shinko Group purchased the motorcycle tire technology and molds from Yokohama Rubber Co., and began production of these products under the Shinko Tire brand. With manufacturing based in South Korea and design based in Japan, the company has seamlessly combined Japanese engineering and design principles with South Korean production and quality control standards. Today Shinko Tires produces approximately 200,000 motorcycle tires per month.
In the United States Shinko Tires are imported by Western Power Sports, Inc. (WPS), with corporate headquarters in Boise, Idaho. With a strong foothold on the power sports market, and with warehouses located in Boise, Idaho; Fresno, California; Ashley, Indiana; Elizabethtown, Pennsylvania; Midlothian, Texas; and Memphis, Tennessee, Shinko Tires USA-in conjunction with WPS-is proud to bring you the Shinko line of Sportbike, Cruiser, Scooter, Off road, and Dual sport tires.
On going testing in the USA and R & D at Shinko Tire's factory means a continuous path of exciting tires to meet the need of today's riders. Shinko Tires and WPS are here to serve your needs.

Regards Martin.

    

11Back to top Go down   Radial or Bias Ply for 1985 K100RT Empty Re: Radial or Bias Ply for 1985 K100RT on Wed Sep 13, 2017 7:54 am

Dai

Dai
Life time member
Life time member
@MartinW wrote:apparently they bought the molds and technology of Yokohama.
Known to us in the Nineties as 'Yoko-teflons'. Completely non-stick in the rain.


__________________________________________________
'83 K100 upgraded to K100RS spec
Others...
'78 Moto Guzzi 850-T3, '79 Moto Guzzi 850-T3 California,'93 Moto Guzzi 1100ie California,
'03 Suzuki Blandit GSF600SK3 (NFS any more because wifey has claimed it)
    

12Back to top Go down   Radial or Bias Ply for 1985 K100RT Empty Re: Radial or Bias Ply for 1985 K100RT on Wed Sep 13, 2017 8:30 am

Laitch

Laitch
Life time member
Life time member
@Dai wrote: Completely non-stick in the rain.
That's why the company promotes them as exciting tires. Smile


__________________________________________________
1995 K75T 68,000 miles
Radial or Bias Ply for 1985 K100RT Usa-lo10
    

13Back to top Go down   Radial or Bias Ply for 1985 K100RT Empty Re: Radial or Bias Ply for 1985 K100RT on Wed Sep 13, 2017 8:33 am

MartinW

MartinW
Life time member
Life time member
Dai I've never ran Yoko's but another Brick forum has heaps of members running Shinko's with excellent feedback on them. One would hope that technology has advanced since the 90's.
Regards Martin.


__________________________________________________
K75s Hybrid
    

14Back to top Go down   Radial or Bias Ply for 1985 K100RT Empty Re: Radial or Bias Ply for 1985 K100RT on Wed Sep 13, 2017 10:56 am

charlie99

charlie99
VIP
VIP
I didn't have a bad run from shinko roadmaster rear ...

there were far more other issues than tyres to worry about then


__________________________________________________
cheezy grin whilst riding, kinda bloke ....oh the joy !!!! ...... ( brick aviator )

'86 K100 RT..#0090401 ..."Gerty" ( Gertrude Von Clickandshift ) --------O%ORadial or Bias Ply for 1985 K100RT Au-log10
    

15Back to top Go down   Radial or Bias Ply for 1985 K100RT Empty Re: Radial or Bias Ply for 1985 K100RT on Sun Sep 17, 2017 9:37 pm

MIBrick

MIBrick
active member
active member
I put Shinko's on my 86 K100RS in the spring. I've ridden in pop-up storms varying from sprinkles lasting a few miles/minutes to torrential downpours with serious wind shear and gusts at surface. Haven't had a problem staying connected to the asphalt, although in the heavy rain, I tend to slow down significantly.

    

16Back to top Go down   Radial or Bias Ply for 1985 K100RT Empty Re: Radial or Bias Ply for 1985 K100RT on Sun Sep 17, 2017 11:48 pm

Point-Seven-five

Point-Seven-five
Life time member
Life time member
I have 28,000 miles of experience with Shinko Tourmasters on my K75RT. I guess that the fact that I never worry about what my tires are going to do says a lot about them. I make sure the pressure is at 38front/42rear and just ride. I ride wet or dry in temperatures from freezing to 45C.

Normal life expectancy with a lot of slabbing is around 10,000 miles rear/13,000+ miles front.

I can get a set online for about $180 delivered. I do my own mounting and balancing.


__________________________________________________
Present:
1994 K75RT
1991 K100RS

Past:
1994 BMW K75S
1992 BMW K100RS
1982 Honda FT500
1979 Honda XR185
1977 Honda XL125
1974 Honda XL125
1972 OSSA Pioneer 250
1968 Kawasaki 175
    

17Back to top Go down   Radial or Bias Ply for 1985 K100RT Empty Re: Radial or Bias Ply for 1985 K100RT on Mon Sep 18, 2017 3:17 am

uhoh7

uhoh7
active member
active member
I just rode the scorpions and the 85 K100RS for the first time today.

Radial or Bias Ply for 1985 K100RT 37103594406_2999979427_b
L1059570 by unoh7, on Flickr

Fantastic on pavement, awful on any type of dirt.

    

18Back to top Go down   Radial or Bias Ply for 1985 K100RT Empty Re: Radial or Bias Ply for 1985 K100RT on Mon Sep 18, 2017 3:40 am

charlie99

charlie99
VIP
VIP
that front tyre looks very much like a speed demon to me ....better go check


and they do inspire confidence indeed


cant see the rear


__________________________________________________
cheezy grin whilst riding, kinda bloke ....oh the joy !!!! ...... ( brick aviator )

'86 K100 RT..#0090401 ..."Gerty" ( Gertrude Von Clickandshift ) --------O%ORadial or Bias Ply for 1985 K100RT Au-log10
    

19Back to top Go down   Radial or Bias Ply for 1985 K100RT Empty Re: Radial or Bias Ply for 1985 K100RT on Mon Sep 18, 2017 8:40 pm

uhoh7

uhoh7
active member
active member
@charlie99 wrote:that front tyre looks very much like a speed demon to me ....better go check


and they do inspire confidence indeed


cant see the rear

Thank You Charlie!!!

Sorry my bad, luckily I was reading the advice here correctly in the first place and I ordered Pirelli Sport Demons.

I have never been on pavement with any two wheeled vehicle that grips like them. But when I pulled off into a campground, wow, be careful front has zero grip on dirt. Worst tire of any two wheeled vehicle, for that LOL

    

20Back to top Go down   Radial or Bias Ply for 1985 K100RT Empty Re: Radial or Bias Ply for 1985 K100RT on Tue Sep 19, 2017 4:48 am

charlie99

charlie99
VIP
VIP
Radial or Bias Ply for 1985 K100RT 44271

yeah been there ....giggles

a few of us go bushwhacking into the hills on the "Karua River rally " hosted by the bmw touring club new south wales

always a good event for a meet up with friends and see some other machinery outside our normal circle


but the shortest route to the campsite is over about 14 kilometres of thoroughly bush - dirt ] rocky - slime encrusted ...tracks

always interesting for the traveller geared up for road use only ....

perhaps next year I may have a dual sport type tyre to comment on ... but gaz and a few others have tried some nice looking stuff and reports are good


glad you like the "demons " on road at least ...grin

have fun !!
Radial or Bias Ply for 1985 K100RT 2014-010

Radial or Bias Ply for 1985 K100RT 20160210


__________________________________________________
cheezy grin whilst riding, kinda bloke ....oh the joy !!!! ...... ( brick aviator )

'86 K100 RT..#0090401 ..."Gerty" ( Gertrude Von Clickandshift ) --------O%ORadial or Bias Ply for 1985 K100RT Au-log10
    

21Back to top Go down   Radial or Bias Ply for 1985 K100RT Empty Re: Radial or Bias Ply for 1985 K100RT on Tue Sep 19, 2017 5:23 am

AL-58

AL-58
Life time member
Life time member
@charlie99 wrote:Radial or Bias Ply for 1985 K100RT 44271

yeah been there ....giggles

a few of us go bushwhacking into the hills on the "Karua River rally " hosted by the bmw touring club new south wales

always a good event for a meet up with friends and see some other machinery outside our normal circle


but the shortest route to the campsite is over about 14 kilometres of thoroughly bush - dirt ] rocky - slime encrusted ...tracks

always interesting for the traveller geared up for road use only ....

perhaps next year I may have a dual sport type tyre to comment on ... but gaz and a few others have tried some nice looking stuff and reports are good


glad you like the "demons " on road at least ...grin

have fun !!
Radial or Bias Ply for 1985 K100RT 2014-010

Radial or Bias Ply for 1985 K100RT 20160210

Wait till it rains Charlie, then it get real enjoyable.





__________________________________________________
'87 K100RS/HRD sidecar (1100 motor)sc25
'92 K100RS-16v (Paint it Black)

'87 K100RT with Paralever backend

"When I'm too old and too foolish to handle a sidecar I'll buy a Sportsbike"

Radial or Bias Ply for 1985 K100RT K-dogs10
    

22Back to top Go down   Radial or Bias Ply for 1985 K100RT Empty Re: Radial or Bias Ply for 1985 K100RT on Tue Sep 19, 2017 5:45 am

charlie99

charlie99
VIP
VIP
yeah did that same route in 2012 Al

was a wet one indeed ...I seem to recall attempting to light a fire 3 or 5 times ....luckless ...and rick g will be giggling his head off at the memory


the river crossing was big that year ...eh ? the fire wood was damp ..to waterlogged and the presentation ceremonies were attended by many raincoats with mainly flat beers ...

Radial or Bias Ply for 1985 K100RT Trips_10

this was just before frank s ? bike came across

and frank slowly pushing through

Radial or Bias Ply for 1985 K100RT Trips_11

and rick g enjoying totally the fine weather

Radial or Bias Ply for 1985 K100RT Trips_12


__________________________________________________
cheezy grin whilst riding, kinda bloke ....oh the joy !!!! ...... ( brick aviator )

'86 K100 RT..#0090401 ..."Gerty" ( Gertrude Von Clickandshift ) --------O%ORadial or Bias Ply for 1985 K100RT Au-log10
    

23Back to top Go down   Radial or Bias Ply for 1985 K100RT Empty Re: Radial or Bias Ply for 1985 K100RT on Tue Sep 19, 2017 10:33 am

duck

duck
Life time member
Life time member
You can run radials on an 85 if you switch to the later 3-spoke wheels. Then you can run a 110/80-18 on the front and a 150/70-17 on the 3x17 rear. (What I do with all of my older K bikes.)


__________________________________________________
Current stable:
86 Custom K100 (standard fairing, K75 Belly pan, Ceramic chromed engine covers, paralever)
K75 Frankenbrick (Paralever, K11 front end, hybrid ABS, K1100RS fairing, radial tires)
86 K75C Turbo w/ paralever
94 K1100RS
93 K1100LT (x2)
91 K1
93 K75S (K11 front end)
91 K75S (K1 front end)
14 Yamaha WR250R
http://www.ClassicKBikes.com
    

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