(edit) MYSTERY SOLVED Cold weather makes your tires hum while cornering????

[Bungie]

Your bike is trying to tell you that you are taking it too easy in the corners.

HAHAH! You've never ridden with LeSkid!

Hint: He takes his FJR on a SuperMoto track and chases Ducati's for fun.

 

[Geezer]

Worn tires will sound different, but mostly I think it is the change in temperature. The tire is colder, so slightly lower in air pressure, and the road is colder so the characteristics are slightly different.

I solved this problem by wearing ear plugs.

 

[Pierre]

Did a ride up St-Sauveur yesterday around 7:00 PM. Did not notice any noice coming from the tires ( New PR2 front & back ).

I was a it south of Mt Tremblant, but still....

I would suspect something else,but I'm no a tire guru :assassin:

 

[Fred W]

I think people are saying it's a combination of (normally) worn tires with scalloped edges and cold temps.

My tires buzz when turning whenever they are ~1/2 worn (or more). Even when it's warm, but now I'm going to be paying attention to see if it gets worse when cold.

 

[Leskid]

Mystery solved (although I'm now certain all the forum old-timers were all rolling their eyes at this thread the whole time). I didn't even get slammed or insulted once! :clapping:

It's cupping allright. When that term was mentioned, I googled the site and found this post: Cupping Thread

I didn't know what cupping was but slapnpop and warchild both stepped-up and explained it very throughly in that thread to the point where even I understand it clearly now.

So I just went outside and felt-up my front tire. There is such a HUUUGE difference in height between the leading & trailing edge of my treads that running my hand along the tire makes me think I'm running it over a rubber saw-blade. Now that I understand what cupping is, I can at least take solstice in the fact that the cupping on my tire is all on the outside 30% of the tire so at least it's from cornering and not from braking. (gotta love the roads up north in the Laurentians)

According to all the resources/articles linked in that thread, the only solution is to 'not corner as hard'???????? As if

BTW: this forum has already prolly saved me half a tire, since earlier this year, I read all the old-timers suggestions that I should have my tires at 40 rear and 41 front. That's what I've been riding at (except on track days) and as I said earlier in this post, I was happy that I'm at 13000 kms on this front before I felt anything. Would've happened much sooner if I followed mamma yamma's inflation recommendations.

thanks to all!

ps: kinds of makes me go 'hmmm' when the main technical guy at a yamaha dealership says it just because the roads are cold though :glare:

 

[Mcgyver74]

So I just went outside and felt-up my front tire.

Um, is this some new Fetish I've never heard of before? LOL

 

[weekend rider]

Well I think I will ad a little fuel to the confusion. I do not believe it is anything that has been mentioned so far, tire wear ,psi ,cold, temp, cupping etc.

Think about this for a moment, cold temp, cold pavement, heat from the tire, cold air,the contac of rubber meeting the road with uneven surface, leads me to this conclusion. It is the cold air being trapped under the tire being compressed by the rotation of the tire as it meets the cold pavement than the air being released as the tire continues in its upward travel and the noise is from the air beng compressed and than warmed and being decompressed than mixed with the cold air again Than Kind of like a harmonic noise because it happens so fast. End result the noise you are talking about, a seady hum..

Another way to look at it :help:

 

[Leskid]

Well I think I will ad a little fuel to the confusion. I do not believe it is anything that has been mentioned so far, tire wear ,psi ,cold, temp, cupping etc.
Think about this for a moment, cold temp, cold pavement, heat from the tire, cold air,the contac of rubber meeting the road with uneven surface, leads me to this conclusion. It is the cold air being trapped under the tire being compressed by the rotation of the tire as it meets the cold pavement than the air being released as the tire continues in its upward travel and the noise is from the air beng compressed and than warmed and being decompressed than mixed with the cold air again Than Kind of like a harmonic noise because it happens so fast. End result the noise you are talking about, a seady hum..

Another way to look at it :help:

actually, you do have a point because it did occur to me last night - why did I not hear sound this BEFORE if my tires are cupped so noticeably. So yeah, the cold would appear to be a factor too. Since this season is pretty much toast, I think I'll wait until next spring to get a new PR2 on the front, so I can see if this cupped tire is any quieter when it's not arctic riding conditions.

 

[road runner]

Tire pressures drop in cold temperatures. Something like 1 psi for every 10 degrees F.
BTW, my Metzlers hum the Beach Boys' "I Get Around" in the summer and Dion's "Run Around Sue" in the winter.

pete

I don't notice humming ,but the bike definitely handles different.Has anyone tried running the tires at different pressure when it's cold out ?

I may try running mine 2 or 3 psi lower tomorrow in 40* F temps.

If I'm thinking correct (and maybe I'm not) a lower tire will create heat and increase psi.

This may get the tires were they are when it's warmer out.Don't know.

Tire guru's chime in.

 

[Fred W]

Art,

Yeah, I generally do run my prssures a bit lower in the real cold stuff. In summer I stick with 40F 42R pretty religiously. But the tires do feel harder when the temps don't break above 45 degrees, or maybe it's just I'm more numb? :blink:

Yesterday's ride was a good example. I took the day off for a ride up into the mountains because I knew this weekend was gonna be wet and ****** and there's not that many weeks left before the snow flies. Before heading out I set my pressures at 38F 40R and everything felt really good. My justification is that the tires have more trouble getting up to temperature at such low ambients, so why not give 'em a little help?

I'm still running the Roadsmart Rear, Pirelli Strada Front combo, FWIW.

 

[road runner]

Hey Fred,

Thanks for the info. I will try it.