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Old 03-31-2012, 06:45 PM   #7096
skibum69
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I really dig the 908 rear, 606 front combo. The 908 front isn't great for street
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Old 03-31-2012, 07:59 PM   #7097
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Originally Posted by Island_Rider View Post
Okay quick tire question for all the 640a owners...

I picked up a 2007 model a few weeks ago, it's got a set of Dunlop 908's on it. They seem like decent tires, a little unstable once you get a bit of lean going

There's a trip in the works to go from Victoria, BC to Moab this June, and I'm thinking they're not the right tire for the job.

But... there's a set of used Pirelli MT90's up for grabs (used) locally. The size isn't quite right for the rear (150/70-18, vs 140/80-18 OE sizing). Think I'm okay to run the slightly wider tire? The MT90 doesn't have big knobs sticking off the sidewall so I think clearance will be okay... Any reasons not to go for it?

I really liked the 908 on the rear for use in all around riding, it is the front that is harder to choose... You throw a more knobbier pattern up front and it skates around enough on pavement to make you feel in danger... Tires like the MT 90, Metzler Sahara or K 60 up front are great on the street, OK on gravel and scary off road...
So I often look for something to run up front that fits in between the 2 extremes such as the TKC 80, Pirelli MT 21, Metzler Karoo, VRM 147 and such... I'm not so picky for a back tire as for me the front is most important...

You could likely run the MT 90s but the 990 spec rear will be a little harder to shoehorn on your rim... And you'll have to manipulate it a little more to get it past the rear brake caliper when installing the wheel on the bike... What type of riding do you plan to do in Utah?
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Old 03-31-2012, 10:58 PM   #7098
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I think the MT90's will just be for the trip - the 908's will be back on after. Partly because the Pirellis will be better for 90% of the trip (mostly pavement down, with some trail riding down there), and partly because I know the 908's will be completely toast after 5000km of riding.

The front size of the Pirellis up for grabs is 90/90-21. The rear is just not quite right, and if it will fit, I will use it.
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Old 03-31-2012, 11:15 PM   #7099
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Originally Posted by skibum69 View Post
I really dig the 908 rear, 606 front combo. The 908 front isn't great for street
,

Yep, headshake from hell with a 908 on the front above 60mph or so.

I couldn't dial it out no matter what I did.

908 on the rear, and a 606 on the front makes Dirty a happy boy.

Dirty
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Old 03-31-2012, 11:51 PM   #7100
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Originally Posted by Island_Rider View Post
I think the MT90's will just be for the trip - the 908's will be back on after. Partly because the Pirellis will be better for 90% of the trip (mostly pavement down, with some trail riding down there), and partly because I know the 908's will be completely toast after 5000km of riding.

The front size of the Pirellis up for grabs is 90/90-21. The rear is just not quite right, and if it will fit, I will use it.
Well, it's a pretty safe bet to buy them as if the rear doesn't work you can always put it on the market and recover your money... I haven't run a MT 90 on my 640 but I have used both the MT 60 and MT 70s which are more street oriented Pirellis and found that they lasted no longer than the more aggressive tread tires... While the compound in these tires + the close together tread blocks add to longer life it's the shallower tread depth that becomes the equalizer when comparing lifespan to those more aggressive hoops...
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Old 04-01-2012, 08:05 AM   #7101
skibum69
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Quote:
Originally Posted by dirty_sanchez View Post
,

Yep, headshake from hell with a 908 on the front above 60mph or so.

I couldn't dial it out no matter what I did.

908 on the rear, and a 606 on the front makes Dirty a happy boy.

Dirty
fine if it's all dirt but the front knobs are too tall and pointy for pavement-it is a rally tire and if you look at the Michelin Deserts you can see the resemblance instantly. The 606 front knobs are fatter more square for better hard condition traits
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Old 04-01-2012, 08:07 AM   #7102
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Originally Posted by gunnerbuck View Post
Well, it's a pretty safe bet to buy them as if the rear doesn't work you can always put it on the market and recover your money... I haven't run a MT 90 on my 640 but I have used both the MT 60 and MT 70s which are more street oriented Pirellis and found that they lasted no longer than the more aggressive tread tires... While the compound in these tires + the close together tread blocks add to longer life it's the shallower tread depth that becomes the equalizer when comparing lifespan to those more aggressive hoops...
I'm sure the MT90 will run nicely but I wouldn't stray too far offroad on them
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Old 04-01-2012, 09:05 AM   #7103
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Thanks for the advice, guys!

My company for the trip is an F800 and a Scrambler - We're not venturing too far into the boonies anyways.
(Well, I might, but I can clearly see by the tread on the MT90 that it's not a sand/mud/etc tire)
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Old 04-02-2012, 10:25 PM   #7104
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Old 04-03-2012, 05:25 PM   #7105
skibum69
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you can stray offroad on that
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Old 04-07-2012, 03:11 PM   #7106
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New to the 640 brigade.
Purchased mine in January and after 200 miles we came to a halt with a metallic clattering sound.
Previous owner never peened the pin over that held the rollerbearing/cam rocker, needless to say the pin made a bid for freedom!
Now she's back we seem to have a juddery issue in 1st/2nd at slow speeds which she never had before but clears on opening the throttle.
possible plug breaking down?
Anyway I swapped the tired TKC's for a set of Mitas E-09 dakar on the front and E09 on the rear.
Came with Touratech Zeta panniers which have been de-stickered and Autosolved!.Would like a newer profiled seat, the other is too much like an armchair and I have a shock when I get back on the 400EXC!







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Old 04-07-2012, 03:34 PM   #7107
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Quote:
Originally Posted by Tye View Post
New to the 640 brigade.
Purchased mine in January and after 200 miles we came to a halt with a metallic clattering sound.
Previous owner never peened the pin over that held the rollerbearing/cam rocker, needless to say the pin made a bid for freedom!
Now she's back we seem to have a juddery issue in 1st/2nd at slow speeds which she never had before but clears on opening the throttle.
possible plug breaking down?
Anyway I swapped the tired TKC's for a set of Mitas E-09 dakar on the front and E09 on the rear.
Came with Touratech Zeta panniers which have been de-stickered and Autosolved!.Would like a newer profiled seat, the other is too much like an armchair and I have a shock when I get back on the 400EXC!







welcome on board
nice looking bike!
what year is that?
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Old 04-07-2012, 03:49 PM   #7108
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Thanks
She's a 2003
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Old 04-07-2012, 06:02 PM   #7109
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She's a 2003
AKA... the "Best Year"
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Old 04-08-2012, 06:06 PM   #7110
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AKA... the "Best Year"
Indeedy!
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