Are Cambertires legit? - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

aaronosaurus · 09-10-2013, 11:20 PM

I fell down the wikipedia hole today and somehow ended up getting linked to http://cambertire.com. These seem like the SEB would swat them away under current stock class. However with the new street class coming next year, and it's leniency towards camber adjustments, they might be another tool to get more negative camber.

Has anyone seen these in action before? (Someone must have, there is a picture of an 86 on their website). Did they work well? Are we on the edge of some tire revolution of people playing with sidewall stiffness and length? Or is this all just wishful thinking?

Element Tuning · 09-10-2013, 11:25 PM

Ha ha that's actually old technology and I believe they were BFG R1s back in the early 90s that had that. Its basically good for classes that limit suspension mods so the tire helped deliver the extra negative camber needed.

Kimsey47 · 09-10-2013, 11:35 PM

First saw these on Jay's garage... Think it was 2010-2011 though.

Kimsey47 · 09-10-2013, 11:36 PM

Whatdoyaknow: http://m.autoblog.com/2010/08/13/vid...ires-inventor/

aaronosaurus · 09-10-2013, 11:42 PM

The more I think about it; you can't flip the tires, so wear is going to be more of an issue. And unless they come up with the perfect compound for the weight of our car, we're better off with an even tire.

CSG Mike · 09-11-2013, 11:23 AM

And you're effectively driving on cones... artificial toe?

qoncept · 09-11-2013, 11:32 AM

It's been probably 10 years since I read it but I seem to remember specific tire model banned (I think it was a Pirelli) because it was molded with camber. It wouldn't fly.

Edit: Here it is. 2005 rulebook, 14.3.D:

Quote:

D. Tire models must not appear on the following list, which may be
altered at any time by the SEB upon notification of the membership.
Pirelli P Zero Corsa

Not positive that's the tire or not but I'm pretty sure it was molded with camber.

448hpsti · 09-11-2013, 11:47 AM

I cant even begin to imagine controlling a power induced slide....

2superblus · 09-11-2013, 12:14 PM

Um I can say John Scott was racing on the 4 or 5 degree Cambertires at the Milwaukee solo event this last weekend. He ran in STU with a EVO that was Street Mod, his tires are marked 140TW but are actually R-comps. He still was beat by a underprepped STU 04 STI

The tires do not have enough sizes to be legal for SCCA Solo use in Stock or Street Touring.

I also have driven on them and raced on them at an autocross event in CO.

qoncept · 09-11-2013, 12:23 PM

Quote:

Originally Posted by 2superblus

his tires are marked 140TW but are actually R-comps.

How's that?

aaronosaurus · 09-11-2013, 01:25 PM

Quote:

Originally Posted by CSG Mike

And you're effectively driving on cones... artificial toe?

The aren't curved in the plane that toe is measured in. But you caster would change as you rolled to the shorter part of the tire, as would the gearing of that tire. I wonder how much the diff would like getting spun even faster?

CSG Mike · 09-11-2013, 01:27 PM

Quote:

Originally Posted by aaronosaurus

The aren't curved in the plane that toe is measured in. But you caster would change as you rolled to the shorter part of the tire, as would the gearing of that tire. I wonder how much the diff would like getting spun even faster?

Yes, but tire deflection on the contact patch effectively creates a force that acts like toe...

aaronosaurus · 09-11-2013, 01:29 PM

Quote:

Originally Posted by qoncept

How's that?

Treadwear, as I understand it, has no units or standard of measure. It's up to the manufacture to just pick a number.

aaronosaurus · 09-11-2013, 01:30 PM

Quote:

Originally Posted by CSG Mike

Yes, but tire deflection on the contact patch effectively creates a force that acts like toe...

And shorter sidewalls would mean less deflection. I wonder if they squirm less because of that?

09-10-2013, 11:20 PM	#1
aaronosaurus The data matters Join Date: Jun 2012 Drives: WRBP BRZ Location: Urbana, IL Posts: 78 Thanks: 11 Thanked 21 Times in 16 Posts Mentioned: 3 Post(s) Tagged: 0 Thread(s)	Are Cambertires legit? I fell down the wikipedia hole today and somehow ended up getting linked to http://cambertire.com. These seem like the SEB would swat them away under current stock class. However with the new street class coming next year, and it's leniency towards camber adjustments, they might be another tool to get more negative camber. Has anyone seen these in action before? (Someone must have, there is a picture of an 86 on their website). Did they work well? Are we on the edge of some tire revolution of people playing with sidewall stiffness and length? Or is this all just wishful thinking?

09-10-2013, 11:35 PM	#3
Kimsey47 Senior Member Join Date: Mar 2012 Drives: 2016 STI DGM Location: Chattanooga, TN Posts: 1,875 Thanks: 1,189 Thanked 1,460 Times in 662 Posts Mentioned: 9 Post(s) Tagged: 0 Thread(s)	First saw these on Jay's garage... Think it was 2010-2011 though. __________________ Subaru STI :

09-10-2013, 11:36 PM	#4
Kimsey47 Senior Member Join Date: Mar 2012 Drives: 2016 STI DGM Location: Chattanooga, TN Posts: 1,875 Thanks: 1,189 Thanked 1,460 Times in 662 Posts Mentioned: 9 Post(s) Tagged: 0 Thread(s)	Whatdoyaknow: http://m.autoblog.com/2010/08/13/vid...ires-inventor/ __________________ Subaru STI :

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09-10-2013, 11:25 PM	#2
Element Tuning Senior Member Join Date: Jun 2012 Drives: Hydra EMS Powered FRS Raven Black Location: Maryland Posts: 839 Thanks: 54 Thanked 1,021 Times in 365 Posts Mentioned: 61 Post(s) Tagged: 2 Thread(s)	Ha ha that's actually old technology and I believe they were BFG R1s back in the early 90s that had that. Its basically good for classes that limit suspension mods so the tire helped deliver the extra negative camber needed.

09-10-2013, 11:42 PM	#5
aaronosaurus The data matters Join Date: Jun 2012 Drives: WRBP BRZ Location: Urbana, IL Posts: 78 Thanks: 11 Thanked 21 Times in 16 Posts Mentioned: 3 Post(s) Tagged: 0 Thread(s)	The more I think about it; you can't flip the tires, so wear is going to be more of an issue. And unless they come up with the perfect compound for the weight of our car, we're better off with an even tire.

09-11-2013, 11:23 AM	#6
CSG Mike Join Date: Jul 2012 Drives: S2000 CR Location: Orange County Posts: 14,531 Thanks: 8,920 Thanked 14,177 Times in 6,835 Posts Mentioned: 966 Post(s) Tagged: 14 Thread(s)	And you're effectively driving on cones... artificial toe?

09-11-2013, 11:47 AM	#8
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09-11-2013, 12:14 PM	#9
2superblus Senior Member Join Date: Sep 2012 Drives: 13 BRZ WRB Location: Wiscowsin Posts: 269 Thanks: 71 Thanked 132 Times in 78 Posts Mentioned: 6 Post(s) Tagged: 0 Thread(s)	Um I can say John Scott was racing on the 4 or 5 degree Cambertires at the Milwaukee solo event this last weekend. He ran in STU with a EVO that was Street Mod, his tires are marked 140TW but are actually R-comps. He still was beat by a underprepped STU 04 STI The tires do not have enough sizes to be legal for SCCA Solo use in Stock or Street Touring. I also have driven on them and raced on them at an autocross event in CO.

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