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Old 02-12-2014, 05:50 PM   #1
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Default 1/12th GTP, *PLEASE* school me on some of the CRC tire compounds.

Hello everyone.

I'm an oval guy who's just getting into 1/12th scale 13.5 on-road. Can someone give me complete info on some of these compounds out there? Some are new so not much info on them. I would like to know the rubber content, and the firmness shore on the following:

Greene
Blu
Chrome

Anyone's help is greatly appreciated.
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Old 02-12-2014, 07:35 PM   #2
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I have only run the greene rears. The rear of my car is locked down pretty well. I race 17.5 on a non-CRC carpet track with low traction (for carpet)According to the website they are a medium-soft shore with high grip and My understanding is that the Blu is a Medium compound with a little less grip.

To be honest, I think I could run a Blu compound and it would be fine. I plan on trying it at some point.

I know nothing about chrome fronts. Everyone at my track who uses CRC tires runs black or grey fronts.
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Old 02-12-2014, 07:43 PM   #3
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Default compounds

I found a solid combination for 13.5 is to run pink rears and magenta fronts. I ran blue rears and magenta fronts at the Snowbirds and it felt similar. I also ran this combination at the local track and it was good. Blue rears are very locked in and Green rears actually free up the car; especially for stock. Grey fronts are very soft and will wear quick with lots of bite. Black fronts will push off the track unless you sauce 75% of the tire! Never ran chrome.

So I would start testing with blue rears and magenta fronts. If the car is too aggressive in the front (double steering) then switch to pink fronts which are softer and will smooth out the car. Happy testing
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Old 02-12-2014, 07:53 PM   #4
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Maybe this will help a bit. http://johnsbsrracing.com/foam-tires/12th-scale-foams
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Old 02-12-2014, 07:59 PM   #5
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Thanks for the pointers guys
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Old 02-13-2014, 06:55 AM   #6
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Mag front/Blue rear is just about all you need to know for 13.5 these days...
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Old 02-13-2014, 07:02 PM   #7
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So it's my understanding that I can have similar handling characteristics by running either Blu or pink rears.

But there still are somewhat different, right? Can someone tell me how a Blu compares with a Pink regarding % of rubber content as well as duro readings?
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Old 02-13-2014, 08:14 PM   #8
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Quote:
Originally Posted by Outlaw 44 View Post
So it's my understanding that I can have similar handling characteristics by running either Blu or pink rears.

But there still are somewhat different, right? Can someone tell me how a Blu compares with a Pink regarding % of rubber content as well as duro readings?
Pinks and Blues have very similar fwd bite, but Pinks will have much less lateral grip... ie: they will let the car rotate much harder and it will feel a lot looser than with a Blue.

Blues are firmer than Pinks... The new Green compound is very similar to Pink in regards to durometer. Blue or Green, Pink or Magenta... you can get any one of those to work well as a rear tire in 13.5. But to make things easier on yourself, I would just stick with the Blues.
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Old 02-13-2014, 08:39 PM   #9
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Quote:
Originally Posted by JamesL_71 View Post
Pinks and Blues have very similar fwd bite, but Pinks will have much less lateral grip... ie: they will let the car rotate much harder and it will feel a lot looser than with a Blue.

Blues are firmer than Pinks... The new Green compound is very similar to Pink in regards to durometer. Blue or Green, Pink or Magenta... you can get any one of those to work well as a rear tire in 13.5. But to make things easier on yourself, I would just stick with the Blues.
Thank you very much Sir! Now I get it!
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Old 02-13-2014, 09:24 PM   #10
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On the advice of Keven Hebert I ran BSR team purple fronts and blue rears at the IIC...very good combination!
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Old 02-13-2014, 09:41 PM   #11
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Originally Posted by InspGadgt View Post
On the advice of Keven Hebert I ran BSR team purple fronts and blue rears at the IIC...very good combination!
Nobody was fighting for grip at the 2013 IIC... it was like running on fly paper.
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