Tube Confusion - Kawasaki KLR 650 Forum
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post #1 of 10 Old 10-30-2011, 04:56 AM Thread Starter
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Tube Confusion

I'm going to be replacing the stock tires on my 09 this winter with some Anakees. I would also like to have a couple of new tubes on hand incase I pinch the stock tubes. For my style of riding, I'm not interested in the heavy duty off-road tubes, but rather the lighter versions. I've been liking what I've been reading about the Michelin TR-6 and TR-4, but I'm not clear on the various sizing designations... especially for the rear. For the front I think I need the TR-6, 21" Type A. But I'm having a hard time figuring out the rear. There is a TR-6, 17" Type A, but it's labled for 130/90-17 tires. Then there is a TR-4, 17" Type B listed for 130/80-17, which seems better to me?

Anyone out there using these tubes that might have a suggestion?

Many thanks as always.
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post #2 of 10 Old 10-30-2011, 11:17 AM
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I'm not sure about the specific tubes you are looking at but the first number in the sizes you quoted is the tire width in millimeters. ie 130 millimeters corresponds to 5.10 inches. the second number is the aspect ratio or profile and is a percentage of the tire width. ie 130 mm width with a 90 aspect ratio means the tire is approximatly 117mm as tall as it is wide. The lower the aspect ratio, the lower the profile of the tire for a given width.
This could actually relate to the problem I was having installing the heavyduty tube in my new Mefo rear, though there was no aspect ratio printed on the new tube.
Regards .....justjeff
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post #3 of 10 Old 10-30-2011, 03:15 PM
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Originally Posted by Heretic View Post
Then there is a TR-4, 17" Type B listed for 130/80-17

Anyone out there using these tubes that might have a suggestion?

Many thanks as always.
This is the size you want. The 90 series tire is slighty taller than the 80 series. I've seen a couple of tube failures do to the tube being a little fatter than the tire it was mounted with even though the tube was the correct size. Consequently the tube had folded in several spots and the tube failed at one of the folds. I think it is better to have a tube that has to expand a little farther to make contact with the tire.
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post #4 of 10 Old 10-30-2011, 05:05 PM Thread Starter
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Thank you justjeff and SLO for the replies.

I was looking again at the TR-4 17" and it's listed for both 130 and 140 tires. Since my crude math makes out a 140mm tire to be about 5.5 inches, will this be too wide since kawi designates 4.00 / 5.10? Or is it mostly the height that is critical and you can go a bit wider without issue?

Thanks again.
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post #5 of 10 Old 10-30-2011, 09:53 PM
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Originally Posted by Heretic View Post
Thank you justjeff and SLO for the replies.

I was looking again at the TR-4 17" and it's listed for both 130 and 140 tires. Since my crude math makes out a 140mm tire to be about 5.5 inches, will this be too wide since kawi designates 4.00 / 5.10? Or is it mostly the height that is critical and you can go a bit wider without issue?

Thanks again.
I went to the Michelin site and the size for a klr650 rear Anakee2 tire is 130-80-R17 (the "R" indicates a Radial tire construction) That is also the size you would need for the correct tube. I can't seem to find the TR-4, TR-6 designations you are using. Where do they come from? I am not familiar with them.
Regards....justjeff
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post #6 of 10 Old 10-30-2011, 10:09 PM Thread Starter
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Thanks justjeff.

Yeah, I'm pretty clear on the size tires I need, but the Michelin tube designations have me perplexed (especially for the rear). The TR-6 and TR-4 designations correspond to the valve stem design (they are not specific to Michelin). But trying to understand the other ways in which Michelin numbers the tubes is not so clear. I've been looking at the Michelin tube offerings on both bikebandit.com and motorcyclesuperstore.com

http://http://www.bikebandit.com/michelin-motorcycle-tubes/c/a642338a623926

http://http://motorcycle.motorcycle-superstore.com/search#?p=Q&lbc=motorcyclesuperstore&uid=303249525 &ts=ajax&w=tubes&af=br:michelin%20tabs:allproducts &isort=score&method=and&view=grid&cnt=24&format =br

Anyway... I'll maybe try and contact Michelin directly and get their recommendations.

Thanks again
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post #7 of 10 Old 10-30-2011, 10:31 PM
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I went to bike bandit's site and sure understand the confusion now and motorcycle superstore is even worse! I would be interested in what you find out from Michelin.
Sorry I couldn't be more help.
Regards.....justjeff
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post #8 of 10 Old 11-01-2011, 07:35 PM Thread Starter
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Just to follow up...

I contacted Michelin and they said the tube I need is model number 37441 which is 130/70-17 with a TR-4 valve. Unfortunately, most on-line sites don't list the michelin tubes according to model number. I was not able to find this tube on either bikebandit or motorcyclesuperstore. But I did find it on 58cycle.com and they seem to be knowledgable and were nice to talk to. So I have order it from them for $29.00.

Thanks again
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post #9 of 10 Old 11-01-2011, 08:33 PM
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I have no idea why they told you to use a 70 series tube with an 80 series tire. It'll work but $29 is a steep price for a tube.
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post #10 of 10 Old 11-01-2011, 08:44 PM
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I find the size difference interesting also but they are the manufacturer so......

I agree with SLO-KLR on the price though, it does seem somewhat steep. Thanks for passing your info on, I was wondering how things turned out.
Regards...justjeff
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