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Old 03-03-2013, 06:46 PM   #1
dad2bike OP
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scorpion 140/80 tire mounting

Will a Scorpion 140/80 fit on the 4.5" rear wheel of the 950A?

Normally the rear takes a 150/70 on the rear wheel.
My 690 came with a set of Scorpion AT's. I replaced them with dirt knobbies.

I was hoping to use up the Scorps on my 950.
I know the 140/80 will fit the narrower 3.50 rear wheel.
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Old 03-03-2013, 07:16 PM   #2
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Quote:
Originally Posted by dad2bike View Post
Will a Scorpion 140/80 fit on the 4.5" rear wheel of the 950A?

Normally the rear takes a 150/70 on the rear wheel.
My 690 came with a set of Scorpion AT's. I replaced them with dirt knobbies.

I was hoping to use up the Scorps on my 950.
I know the 140/80 will fit the narrower 3.50 rear wheel.
Yep - sure will.
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Old 03-03-2013, 09:53 PM   #3
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Will fit. Makes turnings a bit weird initially until you get used to the way the bikes eagerly "falls" into the turn due to the tyre being more spread out and having lesser of a round side wall profile.
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Old 03-04-2013, 05:34 AM   #4
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140 will technically fit but its not the proper profile for the 4.25 wheel width- that 140/80 is designed for a 2.5 " rim. 3.5 is max. safe install width. Sidewall will be compromised, it's not safe.
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Old 03-04-2013, 08:44 AM   #5
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Originally Posted by ABuck99 View Post
140 will technically fit but its not the proper profile for the 4.25 wheel width- that 140/80 is designed for a 2.5 " rim. 3.5 is max. safe install width. Sidewall will be compromised, it's not safe.
The new Baja edition comes from the factory with Dunlop 908RRs. As far as I know, Dunlop only makes a 140/80.
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Old 03-04-2013, 09:46 AM   #6
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Quote:
Originally Posted by dad2bike View Post
Will a Scorpion 140/80 fit on the 4.5" rear wheel of the 950A?

Normally the rear takes a 150/70 on the rear wheel.
My 690 came with a set of Scorpion AT's. I replaced them with dirt knobbies.

I was hoping to use up the Scorps on my 950.
I know the 140/80 will fit the narrower 3.50 rear wheel.

Im on my second MT21 140/80 rear tire on the wide rim, no problem, Works fine also in the dirt..
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Old 03-04-2013, 09:58 AM   #7
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Thanks for the great comments.
Based on the actual experiences I will use them up on my 950A.
My present Conti TA's are wearing out and I have a big bill coming up on the 690 suspension. Need to do some savings everyplace I can.
Next on the list will be to wear out the 908's on my spare set of wheels, before I sell them off.
I think I can hold off on the new tires purchase at least until next year.
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Old 03-05-2013, 01:01 PM   #8
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Originally Posted by stevodadevo View Post
The new Baja edition comes from the factory with Dunlop 908RRs. As far as I know, Dunlop only makes a 140/80.
You are right KTM has spec'd the use of 908RR, but I cant figure why unless they are using a narrower rim to fit the 140/80 or they have some special production 150/70 dimension exclusive to KTM- (that Dunlop is unaware of.....)

Sorry Dad2Bike- if this was more than what you asked for, but as a tire installer, I wanted to know why KTM spec'd this underrated tire, and what we could truthfully recommend to a customer, or legally install here. From a liability perspective, we would not be able to mount a 140/80 tire on anything beyond what the tire manufacturer recommends, and in this case its a 3.5" rim- our "sales prevention department" (legal counsel) would not sign off on it , and our insurance carrier prob. wouldn't cover if there was a failure and a claim.

Dunlop recommends mounting the 140/80 908RR tire from 2.15" min to a max rim width of 3.50". I called Dunlop to double check, spoke to an cs engineer and they would not endorse mounting that 140/80 on a 4.25" rim. They said it would stretch to fit a 4.0" but would flatten out the profile, and they still would not endorse mounting on a 4.0" rim, let alone 4.25".

See:http://www.dunlopmotorcycle.com/tire...nture/d908-rr/

I called KTM, to ask about the 2013 wheel dimensions thinking maybe they put a special narrower wheel on the Baja Edition- but according to them its a 4.25" wheel.

So why would KTM USA risk a liability claim using an under rated tire in an application that is not endorsed/recommended by the tire manufacturer? Even on KTMs website the only currently approved tires for the 950/990ADV are the MT90 150/70-18 & the Continental TKC 80 150/70-18.

See: http://www.ktm.com/us/dealer-service...tire-list.html

So either the wheel on the Baja Edition is narrower than the KTM CSR I talked to was aware of, or they are using a tire that is not an approved application for that bike.

Anyway Dad2bike, I would not recommend using the 140 MT90 on your ADV rim. My 2 cents- its not worth testing the limits of that tire & bike to save $150.
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Old 03-05-2013, 01:39 PM   #9
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[QUOTE=ABuck99;20872189]You are right KTM has spec'd the use of 908RR, but I cant figure why unless they are using a narrower rim to fit the 140/80 or they have some special production 150/70 dimension exclusive to KTM- (that Dunlop is unaware of.....)

QUOTE]
Probably has something to do with the sidewalls,running the tires under heavy load and low pressure, even on paved surface..Like a rally enviroment.
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Old 03-05-2013, 01:48 PM   #10
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Thank you for all that information ABuck99.

I do have another set of wheels, Woody's 1.85 front & 3.50 rear, that I can run the tires on to use them up. I was planning to sell those off. I guess I may hold off selling them until I've used up the tires.
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Old 03-05-2013, 02:12 PM   #11
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The problem here is not the '140', the problem is the 'scorpion'
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Old 03-05-2013, 03:17 PM   #12
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Originally Posted by mousitsas View Post
The problem here is not the '140', the problem is the 'scorpion'
Tough crowd.

I've had reasonable luck with the Scorps on my 950A. Not nearly the mileage I'm getting on the Conti's though. I'm just needing to replace them at about 13,000 miles. I went thru 2 sets of scorps for the previous 12K.
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Old 03-05-2013, 03:27 PM   #13
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Originally Posted by dad2bike View Post
Tough crowd.

I've had reasonable luck with the Scorps on my 950A. Not nearly the mileage I'm getting on the Conti's though. I'm just needing to replace them at about 13,000 miles. I went thru 2 sets of scorps for the previous 12K.
I have a 2.5 rear rim, so I am not really entitled to speak about the 150 size tyre, but I have used the 140/18 scorpion as well as the 140/18 sahara. Both last the same (6,000 miles) but the sahara seems to be a decade ahead both on and offroad. I wonder how come they don't offer it in 150/18.
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Old 03-05-2013, 03:37 PM   #14
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Originally Posted by dad2bike View Post
Thank you for all that information ABuck99.

I do have another set of wheels, Woody's 1.85 front & 3.50 rear, that I can run the tires on to use them up. I was planning to sell those off. I guess I may hold off selling them until I've used up the tires.
If it were me Id hang on to those xtra wheels as long as you own the 950- 1 dirt set, 1 street set. But if you ever decide to sell them- PM me.
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Old 03-05-2013, 03:42 PM   #15
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If it were me Id hang on to those xtra wheels as long as you own the 950- 1 dirt set, 1 street set. But if you ever decide to sell them- PM me.
That's why I bought this set of wheels several years ago. It just never played out.
I've decided my 950A is staying a pavement Queen. I now have Ginger, my 2009 690R for Dirt attack. And that is to replace my 525EXC.
I've done very little dirt with my 950, maybe 300 miles. Just not as fun as the lighter bikes.
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