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Discussion Starter · #1 ·
Wanted to fit a wider 130/90/18 on the rear of my 80 CX500D project. Will be running a 100/90/19 on the front.



Installing Kenda Challenger tires front & back for sport touring/twisty riding.



Kenda also makes a 120/90/18 with a 26.27" diameter and 4.63" width. Understand from reading past threads this size tire will fit the swingarm without any clearance issues.



The Challenger 130/90/16 has a 25.02" diameter and 5.33" width.



The Challenger 130/90/18 has a 27.06" diameter and 5.22" width.



Wanted to get some thoughts on this modification. Have not purchased a tire.



Thanks,



Kenda Info:



http://kendausa.com/en/home/motorcycle/street/challenger-.aspx





The new 130/90/16 Kenda Challenger has about 1 5/8" clearance from the tire center to swingarm:







Believe if there is a clearance issue, can grind this lip where I am pointing to increase clearance. Can re-weld too.









Moved the 130/90/16 about 1" closer to the swingarm and this is how it looks:



 

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Discussion Starter · #3 ·
Would fitting the 78 Cx swing arm interchange with yours? I don't know but it seems a possiblity and may not be too expensive. AGB-1

http://cgi.ebay.com/ebaymotors/SWIN...2890382QQptZMotorcyclesQ5fPartsQ5fAccessories Maybe a 78 parts bike would be better take what you need and sell the rest.


Thanks for the idea and link!



After reading the following thread, I may be better off staying with a 120/90/18 on a 1978 18" CX rear wheel:



http://cx500forum.com/index.php?/topic/2444-tire-size/
 

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Thanks for the idea and link!



After reading the following thread, I may be better off staying with a 120/90/18 on a 1978 18" CX rear wheel:



http://cx500forum.com/index.php?/topic/2444-tire-size/


I believe they are all the same swing arm. It's just that the 78's had an 18 inch rim and a narrower tire.



If he really wants it the best he could do if it doesn't fit is grind and reweld. Also remember the farther you get up in to the channel of the swimg arm the harder it may get to do things like mount the tire. And if for any reason the tire is low on air it may also rub the sides of the swing arm.
 

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Discussion Starter · #5 ·
I believe they are all the same swing arm. It's just that the 78's had an 18 inch rim and a narrower tire.



If he really wants it the best he could do if it doesn't fit is grind and reweld. Also remember the farther you get up in to the channel of the swimg arm the harder it may get to do things like mount the tire. And if for any reason the tire is low on air it may also rub the sides of the swing arm.


Looks like the 120/90/18 will work fine on the street instead of trying to install a wider tire 130/90/18.



Thanks!
 

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How about a 17" rim/tire combo? Looks like KENDA makes a 130/90-17. Use a GL1100 rear rim, size is 17" x 2.5".. Throwing out ideas.
 

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Discussion Starter · #9 ·
How about a 17" rim/tire combo? Looks like KENDA makes a 130/90-17. Use a GL1100 rear rim, size is 17" x 2.5".. Throwing out ideas.


You know I had wondered about the GL1100 17" on the rear. Would the hub need to be used out of the 1978 18" CX wheel in the 17" GL wheel?
 
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