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Bleeding Paselas

Old 06-12-19, 10:23 AM
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Bleeding Paselas

Sorry for the click-baity sounding title, but it's actually a fitting description.

As some of you might remember, I recently decided to try some wider (700 x 35) tires on my wet weather bike, and they have been great. The only small issue (and it's not a functional issue, so nothing serious), is that the dye from the treads seems to be bleeding down onto the sidewalls (see pics).

Has anyone else experienced this? I think it was raining the very first time I used the tires, so that might be part of it, and I also noticed that the perimeter of the black dye/paint is slightly uneven in spots (noticeable when the wheels are spinning in the stand). Are these hand painted?


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Old 06-12-19, 11:00 AM
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Looks like grease/grime on the rim is spreading outward, not the other way around. Centripetal force and all.
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Old 06-12-19, 11:01 AM
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Originally Posted by groovestew View Post
Looks like grease/grime on the rim is spreading outward, not the other way around. Centripetal force and all.
^This.
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Old 06-12-19, 11:53 AM
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Yes. I have a set of those on my SU100 and they do this. Rim yuck spreads outward over the gumwalls.
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Old 06-12-19, 02:14 PM
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Yeah, I agree with the others, it's rim grime spreading outwards, not the treads bleeding color. It's pretty common on tan sidewalls in general. I just scrub them occasionally, when it starts to bug me. It happens the most after riding in the rain, so if this is your wet weather bike, you are going to see this pretty constantly.
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Old 06-12-19, 02:56 PM
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Hand-built wheels and not machine-built will solve the OP's problems (assuming the proper wheel builder.)
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Old 06-12-19, 03:01 PM
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Originally Posted by acidfast7 View Post
Hand-built wheels and not machine-built will solve the OP's problems (assuming the proper wheel builder.)
I guess I"m not a proper wheel builder. My Paselas do the same thing.

Ben
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Old 06-12-19, 03:03 PM
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I'd try taking the tire off the wheel, cleaning the wheel thoroughly, and remounting.

I bet the problem goes away.
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Old 06-12-19, 03:04 PM
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Originally Posted by groovestew View Post
Looks like grease/grime on the rim is spreading outward, not the other way around. Centripetal force and all.
That was my first though, but I cleaned the rims/spokes pretty throughly before I mounted them. That said, I could have ridden through something nasty that first day. The streaks were just so dark, that it reminded me of someone crying in mascara.

Originally Posted by acidfast7 View Post
Hand-built wheels and not machine-built will solve the OP's problems (assuming the proper wheel builder.)
Yeah, the wheel building method has nothing to do with it. Thanks though.
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Old 06-13-19, 07:42 AM
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Brake dust. You can clean it off, but it'll be back the next time you ride your bike. Not much you can do about it.
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Old 06-13-19, 09:15 AM
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Originally Posted by clengman View Post
Brake dust. You can clean it off, but it'll be back the next time you ride your bike. Not much you can do about it.
I agree it looks like rubber grime from the brakes. You get the same looking grime if you wet your fingers and run them along your rubber windshield wipers on your car.

But how would it get on the inside of the rim near the spokes? The outward force of the spinning wheel should push anything from the brakes out towards the tire.

Last edited by Skipjacks; 06-13-19 at 09:50 AM.
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Old 06-13-19, 09:41 AM
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Originally Posted by robertorolfo View Post
That was my first though, but I cleaned the rims/spokes pretty throughly before I mounted them. That said, I could have ridden through something nasty that first day. The streaks were just so dark, that it reminded me of someone crying in mascara.



Yeah, the wheel building method has nothing to do with it. Thanks though.
That is normal for a bike with rim brakes that is used as a commuter or in any wet condtions. The grime from the street and the brake pads gets on your wheel and then dribbles out and makes tan sidewalls look ugly. IMHO, this is why gum sidewalls went out of fashion decades ago.

To avoid this:
- use disk brakes
- only ride in dry clean conditions
- clean your wheel often.

Its pretty much a fact of life on a rim brake commuter.

That wheel builder comment was kinda funny though. ;-)
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Old 06-13-19, 09:47 AM
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Originally Posted by robertorolfo View Post
Sorry for the click-baity sounding title, but it's actually a fitting description.

As some of you might remember, I recently decided to try some wider (700 x 35) tires on my wet weather bike, and they have been great. The only small issue (and it's not a functional issue, so nothing serious), is that the dye from the treads seems to be bleeding down onto the sidewalls (see pics).

Has anyone else experienced this? I think it was raining the very first time I used the tires, so that might be part of it, and I also noticed that the perimeter of the black dye/paint is slightly uneven in spots (noticeable when the wheels are spinning in the stand). Are these hand painted?
First time using tanwall tires?

Embrace it, or you will go insane.
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There's no such thing as too far.. just lack of time
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Old 06-13-19, 01:13 PM
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Upgrade your bike to disc brakes! Use a proper wheel builder! Use normal tires like the rest of us!

Last edited by alan s; 06-13-19 at 02:56 PM.
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Old 06-13-19, 01:16 PM
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It's no bloody problem, wash it off if it bothers you ..
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Old 06-13-19, 01:33 PM
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Originally Posted by Skipjacks View Post
I agree it looks like rubber grime from the brakes. You get the same looking grime if you wet your fingers and run them along your rubber windshield wipers on your car.

But how would it get on the inside of the rim near the spokes? The outward force of the spinning wheel should push anything from the brakes out towards the tire.
The wheels aren't always spinning, at which point gravity takes over and the dingy water drips down to wherever it's going to go?

I have brake dust e'erywhere.
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Old 06-13-19, 01:41 PM
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Here's what a tire looks like after years of it:

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Originally Posted by chandltp View Post
There's no such thing as too far.. just lack of time
Originally Posted by noglider
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Old 06-13-19, 02:47 PM
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Customer: I don't want black sidewalls....

Bike store: But you should know that....

Customer: I said I will not have black sidewalls!!

The Universe: I give him black sidewalls now.

Customer: *sigh*

Originally Posted by ThermionicScott View Post
Here's what a tire looks like after years of it:

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Old 06-13-19, 02:53 PM
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Originally Posted by ThermionicScott View Post
Here's what a tire looks like after years of it:
Clearly you chose the wrong wheel builder years ago...

On the other hand, my bikes with disk brakes look just as bad - but that is because disk brakes make it easier to ride in crappy conditions.
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Old 06-13-19, 03:06 PM
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Originally Posted by Skipjacks View Post
But how would it get on the inside of the rim near the spokes? The outward force of the spinning wheel should push anything from the brakes out towards the tire.
Yeah, I guess that's what confused me a bit too. The buildup on the inside of the rim made me think it could have been flowing from the outside inward when I stopped at a light or something. Apparently it's just a big mess that gets anywhere and everywhere.

Originally Posted by ThermionicScott View Post
First time using tanwall tires?
I have tanwalls on some of my other bikes, but those are of course "dry weather" bikes so I hadn't experienced the phenomenon yet. Previously this wet weather bike had simple, boring black tires.

Originally Posted by fietsbob View Post
It's no bloody problem, wash it off if it bothers you ..
I live in an apartment. Any sort of thorough washing involves the bathtub and an earful from the girlfriend. That said, I've been thinking of sneaking in a quick wash at the local car rental place, that generally has a hose just sitting there unattended.
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Old 06-13-19, 03:21 PM
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Originally Posted by Skipjacks View Post
Customer: I don't want black sidewalls....

Bike store: But you should know that....

Customer: I said I will not have black sidewalls!!

The Universe: I give him black sidewalls now.

Customer: *sigh*


Originally Posted by chas58 View Post
Clearly you chose the wrong wheel builder years ago...
It was me, I'm so ashamed.
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Originally Posted by chandltp View Post
There's no such thing as too far.. just lack of time
Originally Posted by noglider
People in this forum are not typical.
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Old 06-14-19, 07:09 AM
  #22  
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I like tan-wall tires, but only put them on my bikes that will rarely see rain. They still get dirty, but some soap and scrubbing helps. Regardless, I still hate all of that wet rim muck. On my all weather commuter I have drum brakes so no issue.
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Old 06-14-19, 08:13 AM
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I live in an apartment ...
Bucket & brush, on the sidewalk , in front of the Apartment houses ?
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Old 06-14-19, 09:09 AM
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Originally Posted by fietsbob View Post
Bucket & brush, on the sidewalk , in front of the Apartment houses ?
Search for the Lon Haldeman youtube video on how to clean a bike. Bucket, hot water, Dawn, and one specific brush (that really makes a difference as it really doesn't capture and hold chain grease and road grime) -- you can, or could, order the brush from Home Depot.

The kicker is this regime will clean dirt off your bike, but won't really do too much with tan sidewall tires. Wash early and often, and maybe your tires won't get as grimy. Unfortunately, I don't know of anything that'll clean the grime off the sidewalls once they've started collecting it.
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Old 06-14-19, 09:48 AM
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Your sidewalls look really good compared to mine which are black which no amount of scrubbing can completely remove.
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