Anyone tried a rear 180? - Ducati Monster Forums: Ducati Monster Motorcycle Forum
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post #1 of 16 (permalink) Old 10-02-2015, 12:45 PM Thread Starter
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Anyone tried a rear 180?

Love my 1200S and have the suspension dialed in properly with sag however I think a 180 on the rear may help a lot with initial turn in, I haven't done a bunch of research yet so looking for any thoughts good or bad from fellow bike owners...

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post #2 of 16 (permalink) Old 10-02-2015, 01:57 PM
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It won't matter that much.
My 696 had 160 and it felt about the same in terms of turn in.
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post #3 of 16 (permalink) Old 10-02-2015, 04:25 PM
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I switched to Perelli Angel GTs and stayed with a 190 and the turn in was greatly improved.
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post #4 of 16 (permalink) Old 10-02-2015, 04:27 PM
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I noticed the same thing with Michelin Pilot Road 4s
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post #5 of 16 (permalink) Old 10-02-2015, 06:50 PM Thread Starter
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I'm seriously considering it; will update


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post #6 of 16 (permalink) Old 10-02-2015, 09:01 PM
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How wide is the wheel?
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post #7 of 16 (permalink) Old 10-02-2015, 09:05 PM Thread Starter
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Anyone tried a rear 180?

A 180 55/17 will fit the wheel is 6x17


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post #8 of 16 (permalink) Old 10-02-2015, 11:26 PM
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Quote:
Originally Posted by tomfromON View Post
A 180 55/17 will fit the wheel is 6x17


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Then odds are your turn will be worse on a 180.

A 6" wheel is designed to mount a 190 tire. If you mount a 180, the profile will be flatter like a car tire. I would spend some time researching 190 tire profiles from various manufactures to find something more triangular rather than round if quicker turn-in is your goal.
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post #9 of 16 (permalink) Old 10-03-2015, 04:42 AM
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Originally Posted by bshinn View Post


A 6" wheel is designed to mount a 190 tire.

This assertion is completely wrong.

A 6" wide wheel isn't designed to mount a specific tire, it is the other way around. A whole range of tires will fit and perform properly on a 6" by 17" wheel, even as small as 170/60.

I also am considering mounting up a 180 size tire. I have gone down one size before on a bike and it helped. I think that part of the reason many bikes have 190 rears is that it helps sell the bike when it's sitting on the dealer showroom.

Last edited by Rufus2010; 10-03-2015 at 04:51 AM.
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post #10 of 16 (permalink) Old 10-03-2015, 06:26 AM
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This assertion is completely wrong.
A 6" wide wheel isn't designed to mount a specific tire, it is the other way around. A whole range of tires will fit and perform properly on a 6" by 17" wheel, even as small as 170/60.
So you are saying that the tyre manufacturers make their tyres to fit whatever rim size the motorcycle designers take a fancy to.....interesting.

I'm also not convinced that going a narrower tyre is a smart option. I believe it's certainly not the safest option as you may run the risk of the bead unsealing, and I am wondering what your insurance company would say about your deliberate negligence in not adhering to manufacturers specifications?

Also, interestingly, my BMW manual states that the vehicle is considered unroadworthy with any untested tyre size fitted, that would be a good question to ask your registration and Insurance people, but more importantly from the manual, "Wheel size is very important as a parameter for the chassis and suspension control systems ABS and ASC. In particular, the diameter and the width of a vehicle's wheels are programmed into the control unit and are fundamental to all calculations. Any change in these influencing variables can have serious effects on the performance of the control systems." But hey, those are the Germans and they are a bit anal about this stuff, I am sure the Italians have said to their computer systems, heck, the owners will do whatever they want with our finely engineered piece of equipment. They know more than us so just deal with it.

However, lots of luck, let us know how it all turned out.

Last edited by Deano747; 10-03-2015 at 06:37 AM. Reason: Spelling
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