Reading Your Tires

Mr Lefty · 02-01-2009, 01:50 AM

found this on another forum...
http://crstuning.com/tire-wear.html

LEFT TO RIGHT!

COLD TEAR
(potential rebound tear)
These markings are indications of the tire having too much air so that the outer skin cannot reach the required temperature. The tire is probably gaining only 3-4 pounds when it comes off the track. It can also indicate incorrect rebound adjustment in both front and rear tires, so tire pressure gain must be checked immediately after getting off the track. Gain should be 5-7lbs from cold to hot.

SHOCK SPRING TEAR
When the shock spring is too soft or too hard, the tire carcass is put under extreme duress to the point where the tire shreds and melts. This can be determined by measuring sag to see if the target number cannot be reached firstly, without considerably adding preload to the spring or secondly, if all the preload is off the spring.

SHOCK REBOUND TEAR
When the shock rebound adjustment is incorrectly set on D.O.T. tires, the tread pattern will show cupping on the leading portion of the pattern with a raised edge followed by a low spot immediately behind it.

HOT TEAR
When the tire has too little air in it, the pressure gain from cold to hot will be in excess of 10 pounds. When this occurs the tire melts and leaves an angled pattern yet a solid edge on the outer area of the tire.

Quick281 · 02-01-2009, 02:19 AM

Nice find Ebbs.

azoomm · 02-01-2009, 10:23 AM

Interesting find.

You do understand it has more to do with the compound of the track surface than it really does with your riding or ability... OR even the tires themselves.

racedoll · 02-01-2009, 03:27 PM

It's nice to see them all side by side.

Mr Lefty · 02-01-2009, 07:38 PM

Quote:

Originally Posted by azoomm

Interesting find.

You do understand it has more to do with the compound of the track surface than it really does with your riding or ability... OR even the tires themselves.

yeah... still cool knowing the difference... other than the far right... I didn't really know there was a difference.

the chi · 02-01-2009, 08:07 PM

Great find, good info!

Mr Lefty · 02-01-2009, 08:12 PM

shush you... go pass out

bmblebee · 02-01-2009, 08:46 PM

Thanks for this post!

CW AF 03 · 02-01-2009, 10:35 PM

I quit trying to figure out all that shit and just let our local Ohlins tech do his thing.

Mr Lefty · 02-01-2009, 10:45 PM

Quote:

Originally Posted by CW AF 03

I quit trying to figure out all that shit and just let our local Ohlins tech do his thing.

well yeah if I had a ohlins tech locally I'd not bother :P

02-01-2009, 01:50 AM	#1
Mr Lefty TWFix Legend Join Date: Feb 2008 Location: Denver CO Moto: 01 BMW F650GS Dakar Posts: 15,677	Reading Your Tires found this on another forum... http://crstuning.com/tire-wear.html LEFT TO RIGHT! COLD TEAR (potential rebound tear) These markings are indications of the tire having too much air so that the outer skin cannot reach the required temperature. The tire is probably gaining only 3-4 pounds when it comes off the track. It can also indicate incorrect rebound adjustment in both front and rear tires, so tire pressure gain must be checked immediately after getting off the track. Gain should be 5-7lbs from cold to hot. SHOCK SPRING TEAR When the shock spring is too soft or too hard, the tire carcass is put under extreme duress to the point where the tire shreds and melts. This can be determined by measuring sag to see if the target number cannot be reached firstly, without considerably adding preload to the spring or secondly, if all the preload is off the spring. SHOCK REBOUND TEAR When the shock rebound adjustment is incorrectly set on D.O.T. tires, the tread pattern will show cupping on the leading portion of the pattern with a raised edge followed by a low spot immediately behind it. HOT TEAR When the tire has too little air in it, the pressure gain from cold to hot will be in excess of 10 pounds. When this occurs the tire melts and leaves an angled pattern yet a solid edge on the outer area of the tire.

02-01-2009, 02:19 AM	#2
Quick281 Victim of Blazer Rapage Join Date: Mar 2008 Location: Talkeetna, AK Moto: 06 GSXR 600 Posts: 1,707	Nice find Ebbs. __________________ -Alex- Resident TWFix Noob. My 06 GSXR 600 <-- Its Clickable Fools.

02-01-2009, 10:23 AM	#3
azoomm moderator chick Join Date: Feb 2008 Location: Hill Country TX Moto: Pasta Rockets Posts: 8,917	Interesting find. You do understand it has more to do with the compound of the track surface than it really does with your riding or ability... OR even the tires themselves. __________________ We have enough youth. How about a fountain of "smart"? Come Play at the Track!! http://www.elitetrackdays.com

02-01-2009, 08:46 PM	#8
bmblebee Community Curmudgeon Join Date: Nov 2008 Location: Tallahassee Moto: '04 F4i Posts: 373	Thanks for this post! __________________ Alcohol, Tobacco and Firearms should be a convenience store and not a government agency If You Don't Know What Your Rights are...You Won't Have Any

02-01-2009, 03:27 PM	#4
racedoll AMA Supersport Join Date: Nov 2008 Moto: '04 Kawasaki ZX6RR Posts: 3,392	It's nice to see them all side by side.

02-01-2009, 08:12 PM	#7
Mr Lefty TWFix Legend Join Date: Feb 2008 Location: Denver CO Moto: 01 BMW F650GS Dakar Posts: 15,677	shush you... go pass out

02-01-2009, 10:35 PM	#9
CW AF 03 Ducatisti Join Date: Jun 2008 Location: Las Vegas Moto: 1098, Hypermotard S Posts: 93	I quit trying to figure out all that shit and just let our local Ohlins tech do his thing.