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Old 09-26-2014, 05:50 AM   #1
cml990 OP
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Ktm 990 - similar pirelli 150 70 r18 m/c mt90

Hi guys!!

I can't find rear tyre (PIRELLI 150 70 R18 M/C MT90) anywhere!!!.

Sincé 150 is so hard to find. Is possible to replace for 140 80 18?....I don't think is possible with rim that come with bike unless I replace rim.

Any thoughts?.

Regards.
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Old 09-26-2014, 06:38 AM   #2
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A 140 will probably be possible to get there and work ok, will be a little flatter and you won't get the correct curve on the tire so handling can be somewhat affected.

Now these are TKC 80 and its the same width tire 140, to the left on a 2,5 inch wide rim and to the right on a stock rim from a 2005.5 950.



/Johan
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Old 09-26-2014, 10:47 AM   #3
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Thanks Johan.
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Old 09-26-2014, 11:09 AM   #4
Sumi
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140/80 tires will fit on the stock rims, no problem. Or go with the Conti Trail Attacks, if you're not planing serious offroad.
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Old 09-26-2014, 11:22 AM   #5
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Yes, 140/80s are fine. I did run a Pirelli Rally tire through Colorado. It was fine. You might have a little less rim protection due to the tire not bulging on the sides, but it's not a big deal.

FWIW, I don't like the standard Pirelli rear tire. I'm using the Mefo Super Explorer right now. It's a tire I really, really like. http://www.twistedthrottle.com/tire-...venture-others
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Old 09-27-2014, 05:47 AM   #6
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The '14 990 Baja came with 140/80-18 rear tire on the same rim as the earlier bikes so there souldn't be much of an issue
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Old 09-27-2014, 09:41 PM   #7
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Quote:
I can't find rear tyre (PIRELLI 150 70 R18 M/C MT90) anywhere!!!.
https://www.rockymountainatvmc.com/p...e?term=mt%2090
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Old 12-15-2014, 08:16 AM   #8
cml990 OP
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pirelli 150 70 r18 Align & Balance

I finally got them. Question: do I need to align and balance them at a shop? They didn't have the right tool to do it, so i just replace them.
Is really necessary to align and balance before jump on?
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Old 12-15-2014, 10:37 AM   #9
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Originally Posted by GrenDesb View Post
The '14 990 Baja came with 140/80-18 rear tire on the same rim as the earlier bikes so there souldn't be much of an issue
This is true. But a quick look at the Dunlop website indicates a 4.25 rim is out of specification for that 140 tire. And the instability of the 908s at speed is pretty well known- my local dealer wouldn't even allow test rides on the bikes equipped with them.

It's marketing, not engineering. Just as the "Baja" is a appearance package, so are the tires.

Yes, others will disagree.
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Old 12-15-2014, 03:03 PM   #10
laramie LC4
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Originally Posted by cml990 View Post
I finally got them. Question: do I need to align and balance them at a shop? They didn't have the right tool to do it, so i just replace them.
Is really necessary to align and balance before jump on?
balance yes, if you plan on riding it at any speed.

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Originally Posted by FakeName View Post
It's marketing, not engineering. Just as the "Baja" is a appearance package, so are the tires.

Yes, others will disagree.
not me. 140 is too small. the only 140 i think would be safe would be a terrorflex and that's because they used to call them 150's until people freaked about putting a 150 on their smaller dirt bike rims. so, they just changed the number and now everyone is happy.

i was given a 140 heidi and that is the only reason i put it on the bike, it was free. but even then, I'm very nervous about it and you can tell the tire is being stretched to it's limits.

in my humble opinion stick with the 150's or get a narrower rear rim put on.

just my $.02,

laramie
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