Tire size...

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08 Mar 2012 15:02 #508549 by fizzer_$tfighter
Tire size... was created by fizzer_$tfighter
So I have a stock rear wheel on my 82 KZ 1000, needs new rubber. Mt question is what is the largest tire it can safetly handle...110 just aint cuttin it...

82 KZ 1000 J Model

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08 Mar 2012 16:15 #508565 by 650ed
Replied by 650ed on topic Tire size...
What model '82 KZ1000 ?

1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)

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08 Mar 2012 16:26 #508568 by fizzer_$tfighter
Replied by fizzer_$tfighter on topic Tire size...
J model

82 KZ 1000 J Model

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08 Mar 2012 16:53 - 08 Mar 2012 16:53 #508573 by 650ed
Replied by 650ed on topic Tire size...
From what I can find the '82 KZ-1000 J has the same size stock rear wheel (2.15x18) as my KZ650-C1. I run a 120/90-18 Pirelli Sport Demon on the rear and it works well (Pirelli Sport Demon 100/90 19 on front). In the past I ran 130/90 18 Michelin tires on the rear and that is the largest that will fit on the stock rim without rubbing hard stuff. BUT - I have found that the 120 works every bit as well as the 130. This is because the 130 must be really squeezed onto the rim and this deforms the cross section of the tire somewhat. This deformation results in reducing the contact patch of the tire to about the same as the 120. The 130 looks cool on the bike, but to me it's not worth the struggle to mount it on the rim since there's no functional advantage. Also, I had to replace my stock chainguard with a custom job because the 130 rubbed. The 110 is recommended in some of the tire fitment guides, but it's too narrow for me. Ed

1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)
Last edit: 08 Mar 2012 16:53 by 650ed.

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08 Mar 2012 17:00 #508575 by ramtough_63
Replied by ramtough_63 on topic Tire size...
my 78 had a 130 on it when I got it no problems at all if I had not swapped swingarms I would still be running it

1978 KZ1000 A2
Thrown Together To Ride Til Winter
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1982/83 750R/GPZ
1984 Goldwing 1200 Interstate
1982 Yamahopper QT50
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2 79 HD sporty XLH
02 HD FLSTS Heritage
60's HD Hummer
70's Honda 550 Four
70 Yamaha 100
and various enduros dirtbikes minibikes...
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08 Mar 2012 17:20 #508580 by fizzer_$tfighter
Replied by fizzer_$tfighter on topic Tire size...
Cool, im going to go with the 120, I dont want rubbing.
Swingarm build planned. So ill go big then

82 KZ 1000 J Model

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08 Mar 2012 17:21 #508581 by Patton
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650ed wrote: ... I have found that the 120 works every bit as well as the 130. This is because the 130 must be really squeezed onto the rim and this deforms the cross section of the tire somewhat....

Yes, the 130 reminds of a fat belly pooching out over a too tight waist band. :lol:

Good Fortune! :)

1973 Z1
KZ900 LTD

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08 Mar 2012 18:58 #508605 by fizzer_$tfighter
Replied by fizzer_$tfighter on topic Tire size...
Of course there is a 130 on there...idk

82 KZ 1000 J Model

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09 Mar 2012 00:54 #508674 by RonKZ650
Replied by RonKZ650 on topic Tire size...
You can also get the 4.00-18 which is the correct tire and no a 110/90-18 is "not" the same. A 110/90 is junk, a 4.00-18 is damn near perfect, but choices are limited. A 120/90-18 works and is larger which is what most guys prefer.

321,000 miles on KZ's that I can remember. Not going to see any more.
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09 Mar 2012 01:01 #508676 by fizzer_$tfighter
Replied by fizzer_$tfighter on topic Tire size...

ramtough_63 wrote: my 78 had a 130 on it when I got it no problems at all if I had not swapped swingarms I would still be running it

What swingarm did you put on?

82 KZ 1000 J Model

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09 Mar 2012 01:05 #508677 by fizzer_$tfighter
Replied by fizzer_$tfighter on topic Tire size...

RonKZ650 wrote: You can also get the 4.00-18 which is the correct tire and no a 110/90-18 is "not" the same. A 110/90 is junk, a 4.00-18 is damn near perfect, but choices are limited. A 120/90-18 works and is larger which is what most guys prefer.


Any suggestions on tyres? Model/make that meet your spec?

82 KZ 1000 J Model

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09 Mar 2012 01:14 #508678 by ramtough_63
Replied by ramtough_63 on topic Tire size...
it had a stock dixc brake swingarm with a 130 when I bought it i currently have an 03 ZX6 swingarm with a 190 tire I just finished thanks to the help of the uys on here

1978 KZ1000 A2
Thrown Together To Ride Til Winter
Facebook Page
Free Range Custom Art


1982/83 750R/GPZ
1984 Goldwing 1200 Interstate
1982 Yamahopper QT50
Previous
2 79 HD sporty XLH
02 HD FLSTS Heritage
60's HD Hummer
70's Honda 550 Four
70 Yamaha 100
and various enduros dirtbikes minibikes...

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