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-   -   Rear tires on the front??. (http://www.advrider.com/forums/showthread.php?t=829901)

NortwestRider 09-27-2012 10:01 PM

Rear tires on the front??.
 
I'm not sure where to post this but I need a 120/90-17 front adventure/dual sport tire and all I can find ( except for 705's and TKC's) are rear tires.I have heard that if you mount them backwards they work ok for the front??.Anybody done this ??

2 SPOT 09-28-2012 05:50 AM

i know of some ppl who run that way,,,, non directional tire is the better option.

browneye 09-28-2012 09:21 AM

Do-able, but why? For what bike?

If it's a road bike with a 17 that's had a 120/70 road tire on it, the 120/90 has very much taller sidewall and flatter tread. They are not radial design and are tube type, and you lose about 60% of your contact patch.

Personally I think it's a bad idea for a road bike. After you hit the guard rail or go off an embankment you'll wished you would have stuck with the right tire.

I just posted on the 705 thread on the fullbores. :wink:


EDIT: Oh, and rim width - the 120/90 tire is for a narrower rim than a roadbike with a 120/70. Lose even more of edge tread. Look for riding past the chicken-strips.

NortwestRider 09-28-2012 09:37 AM

It's a GS500 thats going to Alaska and will see alot of dirt roads.A 120 will fit,I have seen one but it was more of a offroad tire than I want.I might go with the FullBore,if it's like the 705 it's sold as a front ir rear.


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NortwestRider 09-28-2012 09:38 AM

The stock tire is a 110,there just isn't any 80/20 tires in that size.


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browneye 09-28-2012 10:11 AM

Quote:

Originally Posted by NortwestRider (Post 19699734)
It's a GS500 thats going to Alaska and will see alot of dirt roads.A 120 will fit,I have seen one but it was more of a offroad tire than I want.I might go with the FullBore,if it's like the 705 it's sold as a front ir rear.

The fullbore looks identical, has slightly larger spaces between the treadblocks. The 150/70 is V rated, the smaller tires and fronts are 'S'. Which is fine for the front of your bike.

Most any tire will run on the front, but some tend to be a less rounded profile (rear tires) which can further exacerbate the reduced contact patch issue. Or you ride them completely to the edge.

I think the fullbores would be great for dirt roads. I like them fine on the tiger. Knobbies are better though, maybe a Heidenau or Mefo would work as well - lots of sizes.

EDIT: yeah, just looked up tire sizes for GS500. Odd, came with a 110/70-17. I would run the 120/90 fullbore on it. Bet it would work pretty good. You may have to raise the front fender. Highly likely it won't fit under a low fender. Just don't try to scrape the pegs on the twisties.

itsatdm 09-28-2012 10:51 AM

I ran an 18" rear on the front of my TDM. As long as you pick one with a rounded profile, it will handle fine. I mounted it as I would on the rear.


If you settle for All Terrain instead of knobbies, you can find one that fits.

Pirelll MT 90 A/T and Kenda make ones. If you want a taller aspect ratio, look at tires with inch measurements. They are as tall as wide. A Shinko 4.60 is an example. Typically you will have to run a tube in those.
http://www.motorcycle-superstore.com...res-Tires.aspx

If you have a radial on the rear, you can run a bias tire on the front, but not the opposite.

You probably know this, but metric tires such as 110/90/17 are 110 mm in width, the second number is a percentage of the first or 99mm in this case. Inch tires are all 100%. A 4.60 would be 116.8/116.8mm. I chose the inch tire. I had modded the rear shock mount to gain ground clearance. The taller front did the same for the front of the bike.

ben2go 09-28-2012 11:05 AM

Quote:

Originally Posted by NortwestRider (Post 19699734)
It's a GS500 thats going to Alaska and will see alot of dirt roads.A 120 will fit,I have seen one but it was more of a offroad tire than I want.I might go with the FullBore,if it's like the 705 it's sold as a front ir rear.


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I run 120/60/17 sport tire on my GS500 and a 120/70 or bigger will rub the fender in a dual sport or offroad tire.I solved this by using a Bandit 400/600 front fender.It's still close.I now run a Katana 750 front end which has the same clearance issues.

Bandit 400/600 front fender on a Katana 750 front end running a 120/60.
http://i205.photobucket.com/albums/b...f/100_1334.jpg

NortwestRider 09-28-2012 11:34 AM

I will run a matching rear tire to the front.I might also mount a high fender
(supermoto style ) but I will keep the fork brace and just raise it up.It's
My wifes bike and she is NOT a knee dragger !!.I looked into the MT90 and Kenda 761? And I think they are both tube type.


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mustang 09-28-2012 12:03 PM

it works just fine , a 120 17 shinko 705 mounted backwards on the front . and mounted tubeless to boot ...........the sky didn't fall , and life was good :lol3:lol3

http://i231.photobucket.com/albums/e...r/DSC_0545.jpg

Dave.0 09-28-2012 12:09 PM

dunlop 616 come in 17 inch front and rear sizes, and although it is marketed as a sport tire, it does very well on hard pack dirt/gravel

NortwestRider 09-28-2012 12:11 PM

I think I will go with the FullBore,I had 2 705's come apart on the front of my Vstrom.How many miles did you get out of the 705 on the front ??.


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NortwestRider 09-28-2012 12:56 PM

I just looked at the full bore website and they don't list a 120 so I guess I will take my chances with another 705 !!.


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AustinJake 09-28-2012 01:22 PM

Quote:

Originally Posted by mustang (Post 19700819)
it works just fine , a 120 17 shinko 705 mounted backwards on the front . and mounted tubeless to boot ...........the sky didn't fall , and life was good :lol3:lol3

Me too, Kenda K761, has a good profile, sticks better on the street than a Pirelli MT60, my Kenda is not mounted backwards, mounted it per the rotation arrow

http://i922.photobucket.com/albums/a...wFrontTire.jpg

NortwestRider 09-28-2012 02:00 PM

Is the Kenda a tube type ??.


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