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1Back to top Go down   K100 tyre sizes (leeway?) Empty K100 tyre sizes (leeway?) Sat Nov 10, 2018 5:42 pm

tinyspuds

tinyspuds
Life time member
Life time member

Afternoon all,

Tyres not really my thing so I am struggling with advice received. Need to replace the front tyre on my 1985 K100RT outfit. No shortage of suggestions but I'm struggling to reconcile them with the actuality.

I know what I'm looking for in terms of profile, usage and looks and have been pointed at (inter alia) the Metzeler K block and the Avon Speedmaster (using a rear tyre mounted against the indicated rotation) etc.

Open to all suggestions, but none of these tyres are available for my 'book' designation of 100/90 V 18 Tubeless. I infer from reading here that adherence to these designations seems to be discretionary.

If I were to seek out different width and aspect spec tyres - how much discretion do I have?

Would appreciate feedback from anyone actually running an 'off-spec' tyre. Thanks and kind regards, Stu

    

2Back to top Go down   K100 tyre sizes (leeway?) Empty Re: K100 tyre sizes (leeway?) Sat Nov 10, 2018 5:45 pm

Two Wheels Better

Two Wheels Better
Moderator
Moderator
A common 'upgrade' in tyre size is a 110/80-18 on the standard Y spoke front wheel. The factory sticker under the seat of my 10/86 K100RS, as well as actual use, shows this to be a valid and legal size option for the width of the factory rim. There are also plenty of tyre choices using this size. Out in back a 140/80-17 can be used on the standard wheel. There's a myriad of posts in the forum on this subject:

https://www.google.com/search?ei=zVHnW-j5BYPK8APG_ZTYCw&q=tire+choice+site%3Awww.k100-forum.com&oq=tire+choice+site%3Awww.k100-forum.com&gs_l=psy-ab.3...10152.10463..10729...0.0..0.86.172.2......0....1..gws-wiz.......0i71.s0puLGf3eyE


__________________________________________________

1970 R60/5, OZ '77 R75/7-R100, '85 K100'87 K75C, OZ '87 K100RS, '93 K11-K12 Big Block, '93 K1100RS, '95 R100-Mystic, '96 K1100RS, '98 K1200RS, '00 K1200RS, '02 K1200RS, '03 K1200GT, '04 R1150R'04 R1150RT, '05 K1200S, '06 K1200R, '07 K1200R, '09 K1300GT & 2013 R1200RT-Polizei  - Beemers owned still or sold.

~We all believe what we want to believe in - Rob Dickinson
    

3Back to top Go down   K100 tyre sizes (leeway?) Empty Thanks - just what I needr Sat Nov 10, 2018 6:48 pm

tinyspuds

tinyspuds
Life time member
Life time member
Thanks Two Wheels,
Sorry for starting a redundant thread, obviously I need to get smarter with my searches. You've put me on the right track now though so I'll get out of your hair.
Cheers, Stu

    

4Back to top Go down   K100 tyre sizes (leeway?) Empty Re: K100 tyre sizes (leeway?) Sat Nov 10, 2018 9:22 pm

robmack

robmack
Life time member
Life time member
Two pages to help you.
(1) Article on all K-bike and R-bike wheel sizes available: http://www.largiader.com/parts/wheels.html
(2) Thread on Honda forum talking about Tire sizes versus Rim sizes: https://www.hondatwins.net/forums/52-tires-wheels-brakes/26962-wheel-rim-tire-sizing-important-considerations.html

Put these two sources of information together to answer your query. The charts offer minimum and maximum tire sizes that will physically fit on a rim, and the wheel discussion will give you an idea of the various rims available for K-bikes. Remember that very fat rear tires will hit the swingarm, so do your research before you invest.


__________________________________________________
Robert
1987 K75 @k75retro.blogspot.ca
http://k75retro.blogspot.ca/
    

5Back to top Go down   K100 tyre sizes (leeway?) Empty Re: K100 tyre sizes (leeway?) Sat Nov 10, 2018 10:49 pm

tinyspuds

tinyspuds
Life time member
Life time member
Thanks Robert, very helpful.
Cheers, Stu

    

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