Post Track-Day Cleanup - What exactly is this stuff?

disapr · 11-29-2011, 05:41 PM

This stuff is caked on the inside of my front wheels and I have a few splatters of it in the rear too. What is it?

I assume it's tire or tar from the track but I don't know why it's stuck to the inside of my wheels.

BTW These wheels were clean before the TD.

Park2670 · 11-29-2011, 06:05 PM

This happened on my wheels too. I assumed it was tire chunks from the track surface.

///M Ryder · 11-29-2011, 06:27 PM

It's rubber from your tires.......Phil

tlp · 11-29-2011, 06:38 PM

Gumballs

disapr · 11-29-2011, 06:46 PM

I must be cooking my tires then because I've already picked half of them off before taking the pic and they are frozen on. I just don't see how they get on the inside of my wheel.

Z K · 11-29-2011, 06:47 PM

It's actually melted brake pad material. It's melted off chunks of brake pad that splattered on the wheel. If this is what it is, it'll be hard to the touch and you have to scrape it off. Happens all the time if you are using street brake pads.

disapr · 11-29-2011, 06:50 PM

Some of the splats are really hard and have to be scraped off with a plastic razor - The majority of them are rubbery though.

I'm using the pads that came with my Brembo GT's (Ferodo 2500's)

Z K · 11-29-2011, 06:51 PM

Quote:

Originally Posted by disapr

Some of the splats are really hard and have to be scraped off with a plastic razor - The majority of them are rubbery though.

I'm using the pads that came with my Brembo GT's (Ferodo 2500's)

Yeah.. that'll do it. DS2500s aren't designed for track use. It's a good street pad but they chunk apart when they overheat.

Tire rubber wouldn't stick to the inside of the wheel. They come off and fall to the ground or stick to the outside of the car, not inside the wheel.

disapr · 11-29-2011, 06:54 PM

boo... I guess I'll put some RS29's on my Christmas list.

Richbot · 11-29-2011, 07:19 PM

That's called OPR. Other People's Rubber. Clag. Marbles. Watch a Formula 1 race and hear David Hobbs talk about it at least 10 times.

And OPR absolutely will stick to the inside of the wheel, it happens to me all the time. The wheels just need to get hot enough. My wheels are in the 200+ degree range, and much hotter at the hub face, after a race and that's with a cooldown lap. If that was brake pads there wouldn't be any pad left in the calipers.

arter · 11-29-2011, 07:36 PM

yeap, rubber worms from the tires ( yours and other people).

Hate picking out of the radiator too.

Z K · 11-29-2011, 07:38 PM

I stand corrected.. it does look like tire marbles stuck to the rim.

Melted brake pad material looks more chunk-like rock shaped.

klammer · 11-29-2011, 09:20 PM

Quote:

Originally Posted by Richbot

That's called OPR. Other People's Rubber. Clag. Marbles. Watch a Formula 1 race and hear David Hobbs talk about it at least 10 times.

And OPR absolutely will stick to the inside of the wheel, it happens to me all the time. The wheels just need to get hot enough. My wheels are in the 200+ degree range, and much hotter at the hub face, after a race and that's with a cooldown lap. If that was brake pads there wouldn't be any pad left in the calipers.

Exactamundo. Just leaches from the swamp

MaxL · 12-02-2011, 11:21 AM

I had some similar ones on my back window - definitely OPR. Did not damage the tint or rear seat leather at all, but I freaked a bit when I first saw them inside the car.

M3SQRD · 12-02-2011, 12:16 PM

Quote:

Originally Posted by Richbot

That's called OPR. Other People's Rubber. Clag. Marbles. Watch a Formula 1 race and hear David Hobbs talk about it at least 10 times.

And OPR absolutely will stick to the inside of the wheel, it happens to me all the time. The wheels just need to get hot enough. My wheels are in the 200+ degree range, and much hotter at the hub face, after a race and that's with a cooldown lap. If that was brake pads there wouldn't be any pad left in the calipers.

+1

bigjae1976 · 12-02-2011, 07:03 PM

Yup...I just picked a bunch of tire junk off of my wheels. Normal. If that was brake pad material...you probably wouldn't be posting this question. Instead something like..."I was on the track and I lost my brakes."

You'll find that keeping your tracks wheels clean is futile, especially if you're anal retentive and worry about cleaning the inner barrel. Which is why I use black wheels...I just hose them off occasionally. Just sucks whenever I brush up against them with pants on.

The Database · 12-03-2011, 01:45 AM

Those OP..... are the hellish little balls of rubber that plague my car. I hate hate hate them lol. Get some Purple Power from Home Depot, Autozone, etc. to get it off.

leo95se · 12-03-2011, 10:23 PM

gotta love tire marbles. the same crap that plagues your windshield, bumper, hood, grill, and yes, go explore, the inside of your airbox

1MOREMOD · 12-04-2011, 12:02 PM

Quote:

Originally Posted by Z K

Yeah.. that'll do it. DS2500s aren't designed for track use. It's a good street pad but they chunk apart when they overheat.

im curious about this comment. arent the ds2500s a fairly high MOT pad for a street pad which should translate into much better usablility on the track.

bigjae1976 · 12-04-2011, 09:32 PM

I think it really depends on the track. Disapr was on Texas World Speedway...not hard on brakes at all.

11-29-2011, 05:41 PM	#1
disapr drop a gear and... Drives: 2010 M3 Join Date: Mar 2011 Location: Houston, TX Posts: 937 iTrader: (4) Garage List 2004 BMW M3 [0.00] 2012 SVT Raptor [0.00] 2012 BMW X5 [0.00]	Post Track-Day Cleanup - What exactly is this stuff? This stuff is caked on the inside of my front wheels and I have a few splatters of it in the rear too. What is it? I assume it's tire or tar from the track but I don't know why it's stuck to the inside of my wheels. BTW These wheels were clean before the TD. Attached Images __________________ '12 SVT Raptor '04 E46 M3 6MT AW --Build Thread-- www.adaptiveeng.com<-Cool stuff here
	Tweet

11-29-2011, 06:05 PM	#2
Park2670 Lieutenant General Drives: 2011 335d Join Date: Jan 2006 Location: UTAH Posts: 17,950 iTrader: (5)	This happened on my wheels too. I assumed it was tire chunks from the track surface. __________________ Utah Chat Thread 2011 335d ///M-Sport

11-29-2011, 06:27 PM	#3
///M Ryder Grown Azz Man Drives: 2011.5 Dinan ///M3 Join Date: Dec 2010 Location: Houston Posts: 1,989 iTrader: (3)	It's rubber from your tires.......Phil __________________ 2011.5 E92 Dinan///M3: SSII DCT, Comp Pkg, Prem Pkg 2, Conv Pkg, Heated Seats, Enhanced Premium Sound, Black Kidney Grilles, BMW M Performance Steering Wheel, BMW Carbon Fiber Performance Spoiler, BMW Aluminum Pedals, Dinan Exhaust, Dinan X-Pipe, Dinan Carbon Fiber Intake, Dinan Software Tune, Dinan Pulley Kit, Dinan CH-R Wheels, Dinan Carbon Fiber Strut Tower Braces, Arkym Lip, Carbon Reflectors, Lux H8 V3, Brembo 365mm BBK

11-29-2011, 06:46 PM	#5
disapr drop a gear and... Drives: 2010 M3 Join Date: Mar 2011 Location: Houston, TX Posts: 937 iTrader: (4) Garage List 2004 BMW M3 [0.00] 2012 SVT Raptor [0.00] 2012 BMW X5 [0.00]	I must be cooking my tires then because I've already picked half of them off before taking the pic and they are frozen on. I just don't see how they get on the inside of my wheel. __________________ '12 SVT Raptor '04 E46 M3 6MT AW --Build Thread-- www.adaptiveeng.com<-Cool stuff here

11-29-2011, 06:50 PM	#7
disapr drop a gear and... Drives: 2010 M3 Join Date: Mar 2011 Location: Houston, TX Posts: 937 iTrader: (4) Garage List 2004 BMW M3 [0.00] 2012 SVT Raptor [0.00] 2012 BMW X5 [0.00]	Some of the splats are really hard and have to be scraped off with a plastic razor - The majority of them are rubbery though. I'm using the pads that came with my Brembo GT's (Ferodo 2500's) __________________ '12 SVT Raptor '04 E46 M3 6MT AW --Build Thread-- www.adaptiveeng.com<-Cool stuff here

11-29-2011, 06:38 PM	#4
tlp Lieutenant Colonel Drives: '11 e92 M3 SG/FR Join Date: Jul 2005 Location: Huntington Beach, CA Posts: 1,659 iTrader: (6) Garage List 2011 BMW e92 M3 [4.55] 2003 BMW e46 M3 \| Sold [0.00] 1996 BMW e36 M3 \| Sold [0.00]	Gumballs

11-29-2011, 06:47 PM	#6
Z K Major Drives: E90 M3 Join Date: Jul 2011 Location: San Francisco Posts: 1,240 iTrader: (2) Garage List 2008 BMW E90 M3 [0.00]	It's actually melted brake pad material. It's melted off chunks of brake pad that splattered on the wheel. If this is what it is, it'll be hard to the touch and you have to scrape it off. Happens all the time if you are using street brake pads.

11-29-2011, 06:54 PM	#9
disapr drop a gear and... Drives: 2010 M3 Join Date: Mar 2011 Location: Houston, TX Posts: 937 iTrader: (4) Garage List 2004 BMW M3 [0.00] 2012 SVT Raptor [0.00] 2012 BMW X5 [0.00]	boo... I guess I'll put some RS29's on my Christmas list. __________________ '12 SVT Raptor '04 E46 M3 6MT AW --Build Thread-- www.adaptiveeng.com<-Cool stuff here

11-29-2011, 07:19 PM	#10
Richbot Major Drives: Jerez Black E90 Join Date: Sep 2007 Location: STL Posts: 1,485 iTrader: (1)	That's called OPR. Other People's Rubber. Clag. Marbles. Watch a Formula 1 race and hear David Hobbs talk about it at least 10 times. And OPR absolutely will stick to the inside of the wheel, it happens to me all the time. The wheels just need to get hot enough. My wheels are in the 200+ degree range, and much hotter at the hub face, after a race and that's with a cooldown lap. If that was brake pads there wouldn't be any pad left in the calipers. __________________

11-29-2011, 07:36 PM	#11
arter collecting toys Drives: M3 MCB Join Date: May 2008 Location: rochester, ny Posts: 562 iTrader: (0)	yeap, rubber worms from the tires ( yours and other people). Hate picking out of the radiator too. __________________ 2011 e92 M3 Monte Carlo Blue ESS 535 2010 Honda FIT 2006 SLK 55 AMG

11-29-2011, 07:38 PM	#12
Z K Major Drives: E90 M3 Join Date: Jul 2011 Location: San Francisco Posts: 1,240 iTrader: (2) Garage List 2008 BMW E90 M3 [0.00]	I stand corrected.. it does look like tire marbles stuck to the rim. Melted brake pad material looks more chunk-like rock shaped.

12-02-2011, 11:21 AM	#14
MaxL Captain Drives: M3 e90 Join Date: Jun 2007 Location: Toronto Posts: 834 iTrader: (0)	I had some similar ones on my back window - definitely OPR. Did not damage the tint or rear seat leather at all, but I freaked a bit when I first saw them inside the car. __________________ Running a business is like driving on a race track - My Blog

12-02-2011, 07:03 PM	#16
bigjae1976 Brigadier General Drives: 04 330Ci, 11 E90 M3 Individual Join Date: Mar 2006 Location: Milwaukee, WI Posts: 4,046 iTrader: (8)	Yup...I just picked a bunch of tire junk off of my wheels. Normal. If that was brake pad material...you probably wouldn't be posting this question. Instead something like..."I was on the track and I lost my brakes." You'll find that keeping your tracks wheels clean is futile, especially if you're anal retentive and worry about cleaning the inner barrel. Which is why I use black wheels...I just hose them off occasionally. Just sucks whenever I brush up against them with pants on. __________________

12-03-2011, 01:45 AM	#17
The Database Prepare to be virtually punished. Drives: 2008 E92 M3 Join Date: Nov 2011 Location: Tampa/ Orlando Posts: 123 iTrader: (0)	Those OP..... are the hellish little balls of rubber that plague my car. I hate hate hate them lol. Get some Purple Power from Home Depot, Autozone, etc. to get it off. __________________

12-03-2011, 10:23 PM	#18
leo95se First Lieutenant Drives: 09 JB e92, Q5 and passat Join Date: May 2009 Location: CT Posts: 372 iTrader: (1)	gotta love tire marbles. the same crap that plagues your windshield, bumper, hood, grill, and yes, go explore, the inside of your airbox

12-04-2011, 09:32 PM	#20
bigjae1976 Brigadier General Drives: 04 330Ci, 11 E90 M3 Individual Join Date: Mar 2006 Location: Milwaukee, WI Posts: 4,046 iTrader: (8)	I think it really depends on the track. Disapr was on Texas World Speedway...not hard on brakes at all. __________________

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