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1Back to top Go down   used tires Empty used tires Tue Aug 05, 2014 12:58 am

k-wopper

k-wopper
Silver member
Silver member
Hi y'all,
I just responded to a local ad for a lightly used set of Metzelers. The front is a Lasertec 100/90-18 so no trouble there but the rear is a ME-Z2 130/80-17.
I think it will fit? I'm waiting for a call back on the date code and if it's less than four or so years I can see going wrong for $100.00 usd. 
And just as I was going to order a set of Battleaxes.....
See any issues?
Rob

    

2Back to top Go down   used tires Empty Re: used tires Tue Aug 05, 2014 1:16 am

JR_K100RS

JR_K100RS
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G'day Rob , the rear tyre on offer is a little small , rear should be 130/90/17 sitting on a 2.75 inch rim

get new tyre's

JR


__________________________________________________
Diamond Grey ( 617 ) 1987 K100RS ( European Delivery ) Original owner
    

3Back to top Go down   used tires Empty Re: used tires Tue Aug 05, 2014 2:16 am

k-wopper

k-wopper
Silver member
Silver member
been hacking at the tire calculator and tire width 130/80 or 130/90 is 5.12" regardless. The Beemer manual offers an alternative tire of 140/80-17 which gives a width of 5.51"
ergo any tire between 5.15" and 5.51" in width is fine on the 2.75" stock rim. The difference in circumference/ height is less so that only affects the speedo (like that's accurate)
so I think I'm good to go! 
If I'm wrong and the tire flies of at speed I'll leave a note for my heirs to inform you of my mistake.
Cheers,
Rob

    

4Back to top Go down   used tires Empty Re: used tires Tue Aug 05, 2014 4:27 am

JR_K100RS

JR_K100RS
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G'day Rob , when I referred to the tyre as being small I did mean the height , sorry , yes your speedo will be out plus your gearing will be slightly lower , you will be pulling more rev's for a given speed

JR


__________________________________________________
Diamond Grey ( 617 ) 1987 K100RS ( European Delivery ) Original owner
    

5Back to top Go down   used tires Empty Re: used tires Tue Aug 05, 2014 8:18 am

Guest

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I value my life far too much to bother trying to save a few bucks and risk riding on second hand tyres.
The 80% height will hardly make any difference over the 90% height, but might make the handling a but more sure footed due to less sidewall flex. The tyre beads will be exactly the same size on both the 80 and 90.

    

6Back to top Go down   used tires Empty Re: used tires Tue Aug 05, 2014 10:03 am

AJ.Valente

AJ.Valente
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@k-wopper wrote:. . . The Beemer manual offers an alternative tire of 140/80-17 which gives a width of 5.51"
ergo any tire between 5.15" and 5.51" in width is fine on the 2.75" stock rim. The difference in circumference/ height is less so that only affects the speedo (like that's accurate)
Ya, I put on a 140/80 ZR70 on the rear, and had to go to the skinny spacer. It's a tri-spoke 3" rim in this case, and some say I can go to 150, but I don't know how without modifying the center stand.

Anyway, the speedo's off, it runs high by about 5mph. I don't think it had that problem last year cause I have GPS and would have noticed.

So, must agree that going to lower profile makes the speedo run faster.

Handling wise, it's hard to say due to the switch to radial. Ya, it's handling a lot better, but actually I don't even think about that any more cause the tires are sooo reliable.  Smile 

More to the point: If you're buying used tires, get a look at the date code first. If they are more than 4-5 years old--forgetaboutit.

Consider a pair of radials on RS and RT models even if you've still got Y-spokes. See my post on "skinny radials" for more info. You can thank Duck for the radial recommendations, he's about the first to make the switch.


__________________________________________________
'98 K1200RS Marrakesh Red

My old K100 RT Pics and Mods
    

7Back to top Go down   used tires Empty Re: used tires Tue Aug 05, 2014 2:06 pm

the.postman

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bikerboy wrote:I value my life far too much to bother trying to save a few bucks and risk riding on second hand tyres.


+1

Rubbers save lives...... Would you use a used one????????


__________________________________________________
1985 K100 RS   104EA49840092        #0081788     SILVERish (Madison) Prod. date 05/12/84
1984 srx 600
1986 cbr1000f/h
    

8Back to top Go down   used tires Empty Re: used tires Tue Aug 05, 2014 2:13 pm

92KK 84WW Olaf

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@k-wopper wrote:Hi y'all,
I just responded to a local ad for a lightly used set of Metzelers. The front is a Lasertec 100/90-18 so no trouble there but the rear is a ME-Z2 130/80-17.
I think it will fit? I'm waiting for a call back on the date code and if it's less than four or so years I can see going wrong for $100.00 usd. 
And just as I was going to order a set of Battleaxes.....
See any issues?
Rob

I have new Batlax BT45 on.

The only way I would consider a used tyre is swapping from one bike to another. No way would I buy used for a bike. Any way I wouldn't buy a tyre over 3 years old because you will be running on it 4 or 5 years old. The difference between what you are proposing and nice new BTs is too much.


__________________________________________________
1992 K100LT 0193214 Bertha Blue 101,000 miles
1984 K100RT 0022575 Brutus Baja Red 578 bought 36,000 now 89,150 miles
1997 K1100LT 0188024 Wotan Mystic Red 689 58,645 now 106,950 miles Deceased.
1983 K100RS 0011171 Fricka 606 Alaska Blue 29,495 miles Damn K Pox Its a Bat outta Hell Now 37,190 miles. 
1996 K1100LT 0233004 Lohengrin Mystic Red 38,000 miles currently 42,640 miles.

Past:
1968 Yamaha 80 YG1
1971 Yamaha 125 YAS-1
1968 Honda 125 SS
1970 Honda CD 175
1973 Honda CB500-4
Honda CX 500
    

9Back to top Go down   used tires Empty Re: used tires Wed Aug 06, 2014 7:11 am

JR_K100RS

JR_K100RS
Life time member
Life time member
G'day Rob , just thinking a bit more about your question , did a little research on the Metzeler MEZ2 130/80/17 on offer , the load rating is 65 , a K100 should have a load rated tyre of 68 or better , so in summary :

wrong size , wrong load rating , secondhand

that's 3 strikes

get new tyres

just MHO

JR


__________________________________________________
Diamond Grey ( 617 ) 1987 K100RS ( European Delivery ) Original owner
    

10Back to top Go down   used tires Empty Re: used tires Thu Aug 07, 2014 2:22 am

k-wopper

k-wopper
Silver member
Silver member
Thanks for the input. 
The date code was over 4 years so i passed on the deal.
 Went down to my favourite bike shop to order the Battle-axes and the guy mentioned a promotion from Michelin putting a set of radials (pilot road 2 in front and a brand-new model pilot street for the rear) Bt-45's were $290.00usd vs. $317.00usd for the radials
Should be on by Friday so I'll be scrubbing the corners to break them in as fast as possible.
Updates to come.
Ride on,
Rob

    

11Back to top Go down   used tires Empty Re: used tires Thu Aug 07, 2014 3:41 am

RicK G

RicK G
admin
admin
It will be interesting to see how they go. That was one of the big drawbacks with the K100 with Y spoke that radials weren't readily available.
My Kawasaki Z1300 has the same size tyres and I could never find radials to suit until recently, good to see more makers getting into the radials for those sizes.


__________________________________________________
"Man sacrifices his health in order to make money.
Then he sacrifices money to recuperate his health.
And then he is so anxious about the future that he does not enjoy the present; the result being that he does not live in the present or the future; he lives as if he is never going to die, and then dies having never really lived."   Dalai Lama


Bikes 1998 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki
    

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