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Old 12-29-2013, 06:08 PM   #1
Yip OP
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19" front wheel, anybody try?

I am thinking of changing my front wheel to 19" as I am using my F800GS mainly on road (95%).
With the 19" I hope it can be more stable on road and I can go tubeless.
Have anyone here try the 19" before? What's the good and bad?
I have been trying to search on the forum but cannot find anything.
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Old 12-29-2013, 07:01 PM   #2
biodieselandon
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I would love to do the same exact thing but I see more 17 inch than 19. To me a 19 would be perfect because you wouldn't have to mess with the ABS sensor and you could still put dual sport tires on.
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Old 12-29-2013, 09:37 PM   #3
sarathmenon
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If I remember right, a couple of people posted in the 17 inch post that they were able to run a 19" tire without any changes to the ABS ring. I am too lazy to look up who said that, but it should be plug and play if you use the same ABS sensor
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Old 12-30-2013, 01:19 AM   #4
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Quote:
Originally Posted by Yip View Post
I am thinking of changing my front wheel to 19" as I am using my F800GS mainly on road (95%).
With the 19" I hope it can be more stable on road and I can go tubeless.
Have anyone here try the 19" before? What's the good and bad?
I have been trying to search on the forum but cannot find anything.
Yes...it came on the bike new...works fine
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Old 12-30-2013, 04:32 AM   #5
vtbob
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Works great !

All F650GS and F700GS come thru with them in place. Cast wheels are stiffer...more precise handling. The stock tires are wider( wider rims too) than those on the 21 so there is more contact area for shorter stopping distances....better corning traction

The 19 inch wheels have less weight and less gyroscopic forces (why road race bikes use 16 inch) so they are easier to ride in the twisties.

21 incher do roll over big stones better and the wire wheels are tougher (not stronger) because they bend and flex when hitting rough stuff.
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Old 12-30-2013, 10:15 AM   #6
biodieselandon
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I have a friend with an F700... Maybe I will convince her to let me pull her front wheel and check fitment. Which brings up something to consider, you would have to get a front from the 700 and not the 650 because the 700 has a dual rotor right?
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Old 12-30-2013, 12:28 PM   #7
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Quote:
Originally Posted by biodieselandon View Post
I have a friend with an F700... Maybe I will convince her to let me pull her front wheel and check fitment. Which brings up something to consider, you would have to get a front from the 700 and not the 650 because the 700 has a dual rotor right?
Yes, the 650 only has one rotor, but...it has conventional forks, I'm not sure if the 700 has the same upside down ones as the 800. If it doesn't the wheel probably won't fit.


Just checked the 700 and 800 don't share the same style fork so I doubt the wheel would fit.
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Old 12-30-2013, 05:29 PM   #8
Motoriley
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19"

Woody built me a 19" front using a stock hub and sealed it to run tubeless. Bike handles great on the road and I've done a few track days with it and it was perfect. He warned me against going going with a 17" and I followed his advice. ABS works perfectly.
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Old 12-30-2013, 08:02 PM   #9
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I saw a guy on one of those 650 Kawa Versys with the small front wheel, and he had used a rear motocross tyre on the front, and an even wider version on the rear. He reckons it was great on the big wide soft outback roads.

It gave me the idea for setting up my DR for deep sand. I've ridden it in lots of deep sand and it's actually quite manageable. But for something like a Simpson Desert crossing, which a friend and I are planning for later this year among other things, I would like more flotation.

I figure that a 19 with a 120/90 MX tyre will be about the same rolling diameter as a 21 anyway.
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Old 12-31-2013, 01:41 AM   #10
Yip OP
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Quote:
Originally Posted by Motoriley View Post
Woody built me a 19" front using a stock hub and sealed it to run tubeless. Bike handles great on the road and I've done a few track days with it and it was perfect. He warned me against going going with a 17" and I followed his advice. ABS works perfectly.
Do you need to do any adjustment with the ABS ring or simply use the stock one? I am thinking of building a new tubeless spoke wheel like you, the only concerning is the ABS issue.
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Old 12-31-2013, 06:06 AM   #11
Snowy
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Use the ABS ring from a 19?

I'm sure we covered this once before.

Someone fitted a 17 and used an ABS ring off another BMW model.

Or maybe my memory is playing tricks.
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Old 12-31-2013, 07:55 AM   #12
sarathmenon
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Quote:
Originally Posted by Snowy View Post
Use the ABS ring from a 19?

I'm sure we covered this once before.

Someone fitted a 17 and used an ABS ring off another BMW model.

Or maybe my memory is playing tricks.
I've been paying close attention to the 17" conversion. From what I know, 21 -> 19 is no problem with ABS. In fact the 658 and 800 share the same part # for the abs ring. For 17", the sensor can't handle the difference of wheel size, so a custom 40-42 teeth sensor ring is needed (or your dealer probably can change the wheel size on the computer).

I haven't done this yet, so take this with a grain of salt.
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Old 01-01-2014, 11:40 AM   #13
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I'm looking to get a set from Woody's so I can go tubeless. Gonna keep stock set-up in case I ever sell of do some dirt.

Those who have done this, what is the effect of having the front of the bike drop some due to the height of a 21" set-up vs. the 19". I calculate that a 90/90-21 is about 27 3/8" tall and a 110/80 is not quite 26". A 100/90 is slightly higher. This will lower the bike not quite 3/4" in the front. Any stink bug feeling? And which size 19" tire did you choose.
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Old 01-01-2014, 11:44 AM   #14
Motoriley
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I found the handling with the 19 was great. I've heard that the 800 doesn't handle well with too much of a rear weight bias so dropping the front is probably ok on the street. Other than getting a shorter rear shock I'm not go sure what you could do. Softening up the rear would just make the bike sloppy I think. This year I'm going to try dropping the front tubes a bit and see what that does.
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Old 01-01-2014, 12:22 PM   #15
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Mine is already lowered as it is the factory low version. I bought it so if I wanted a little taller seat, I could still sort of touch down. Flat footed right now. I'm finding the new WP forks need a little work. Some bumps feel harsh but I am using most of the travel just on the street. Springs seem soft.
Lower to the ground with the shorter tire is ok, just don't want a stink bug. Rear is set with minimum preload.
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