Tire Touching Exhaust - MVAgusta.net
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post #1 of 16 (permalink) Old 11-17-2013, 10:51 PM Thread Starter
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Tire Touching Exhaust

I got a nail in my tire and after removing the tire I noticed that there is a mark on the bottom exhaust muffler apparently from the tire rubbing up against it.

Full disclosure, I noticed that the tire had a "shiny" look to the edge shortly after having it installed a few months ago - and because when I looked, the tire wasn't touching the exhaust (though it was really close), I more or less let it go. Definitely my bad, and I should have investigated it more then.

So, I am wondering, is it possible to install wheel and/or exhaust in a way that would cause this? Now that I am taking the wheel off and on myself, I just want to make sure I do it right. Since this is the first time I have had it off myself, I don't know if the marks on the exhaust are new or have been there a while - but of course, the tire I know looks like it was rubbing and I hadn't noticed that on previous tires.

I had been using Bridgestone S20's but this last time I tried the Dunlop Q2 (and will be replacing it with the new Q3).

Any thoughts? Thanks.

FYI: In the photo, I am aware the bracket is upside down, I left one bolt in and rotated it out of the way to get off the wheel.
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Chris
2008 Brutale 910R
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post #2 of 16 (permalink) Old 11-18-2013, 01:36 PM
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If you remount the exhaust with the hanger on the inside of the bracket vice the outside of the bracket, then the tire will rub on the exhaust. The exhaust hanger must be mounted to the outside of the bracket. It makes a gob of smoke if you happen to be following one in this condition...as I was.

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post #3 of 16 (permalink) Old 11-18-2013, 06:53 PM Thread Starter
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Quote:
Originally Posted by silentservice703 View Post
If you remount the exhaust with the hanger on the inside of the bracket vice the outside of the bracket, then the tire will rub on the exhaust. The exhaust hanger must be mounted to the outside of the bracket. It makes a gob of smoke if you happen to be following one in this condition...as I was.
Thanks for the reply, but I believe the bracket installed correctly (and it has been like this through three other rear tires without issue - which is why I'm stumped). Here's a photo:
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post #4 of 16 (permalink) Old 11-19-2013, 07:03 PM
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May I ask what size are you using? It could be the tire it self. Mounting could have deformed it that is why its rubbing against the exhaust.
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post #5 of 16 (permalink) Old 11-19-2013, 07:42 PM Thread Starter
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May I ask what size are you using? It could be the tire it self. Mounting could have deformed it that is why its rubbing against the exhaust.
190/55ZR17 - which is what it is supposed to be. I am going to ask the shop when I take it in to get the new tire to see what they say since they mounted it and put it on the bike.

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post #6 of 16 (permalink) Old 11-19-2013, 07:43 PM
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Just looked at my 910 and the brackets are the same as yours. I have about 10mm between the tyre and exhaust at the closest point. I'm running Pilot Road 3 190/55.
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post #7 of 16 (permalink) Old 11-20-2013, 07:00 PM
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190/55ZR17 - which is what it is supposed to be. I am going to ask the shop when I take it in to get the new tire to see what they say since they mounted it and put it on the bike.
That would be a good idea, but I think its within the mounting of the tire or wheel it self that caused the rubbing issue.
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post #8 of 16 (permalink) Old 11-20-2013, 07:18 PM Thread Starter
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Originally Posted by rsawkins View Post
Just looked at my 910 and the brackets are the same as yours. I have about 10mm between the tyre and exhaust at the closest point. I'm running Pilot Road 3 190/55.
Thanks for measuring yours. Once I get the new tire on, I'll see what it looks like. I already have the wheel off, but when I looked prior to removal, I would have guessed my clearance was more like 5mm.

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That would be a good idea, but I think its within the mounting of the tire or wheel it self that caused the rubbing issue.
I get what you're saying, but I don't know how it could've been done incorrectly. I've put over 3,000 miles on the tire and it certainly didn't effect the riding. Ugh... frustrating when the reason isn't obvious.

The only thing I can think is right after I got the new tire, I rode up to Noel's and he helped me get the tire off and put back on. Maybe something was wrong between picking it up at the dealer and driving to Noel's and then it has been okay since then?? I don't know, but when I get the tire mounted I'll see how it goes on and what kind of clearances there are.

Thanks for all the feedback.

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post #9 of 16 (permalink) Old 11-25-2013, 12:43 PM Thread Starter
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New tire on, plenty of clearance

I have the new tire on and there is about 10 mm of clearance.

I don't know why the previous tire was rubbing the exhaust, and I guess I will never know. I ended up going to a different shop to get the new tire because the original shop didn't get the tire in as promised on time and I wanted the bike for the weekend.

Oh well, one mystery not solved. At least it all looks good now.

By the way, love the Dunlop Q3 so far - can't wait to get it fully scrubbed in.

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post #10 of 16 (permalink) Old 11-25-2013, 12:53 PM
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i had the same issue with a Pirreli Diablo Rosso II.
the tire had minimal clearance (less than 5 mm) and
was rubbing during riding.

in my opinion, the measure 190/55 is only an
approximate measure. the real numbers can vary
quite a lot from tire to tire.

what surprises me is that the Diablo Rosso II is actually
not allowed to be ridden on a brutale here in germany,
while the dunlop sportmax qualifier II is. so you may just
received a tire out of spec from the dealer.

i would just recommend to stay way from the tires you
had problems and stay with the tire, which works.

Last edited by firedancer; 11-25-2013 at 12:55 PM.
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