Club Cobra Gas-N Exhaust  

Go Back   Club Cobra > Manufacturers, Engine Builders, tools, and parts. > BackDraft Racing ---

Keith Craft Racing
Nevada Classics
Keith Craft Racing
Main Menu
Module Jump:
Nevada Classics
Nevada Classics
Keith Craft Racing
MMG Superformance
Advertise at CC
Banner Ad Rates
MMG Superformance
MMG Superformance
March 2024
S M T W T F S
          1 2
3 4 5 6 7 8 9
10 11 12 13 14 15 16
17 18 19 20 21 22 23
24 25 26 27 28 29 30
31            
  #1 (permalink)  
Old 01-30-2015, 03:20 PM
CC Member
Visit my Photo Gallery

 
Join Date: May 2011
Location: Clarksville, MD
Cobra Make, Engine: Backdraft, Roush 427 SR/TW
Posts: 64
Not Ranked     
Default Wider Wheels/Tires Experience?

Hello,

Backdraft Racing Roadster #785, delivered in Summer 2009. I have a set of wheels with street tires and a set of wheels for autocrossing.

For autocrossing, I have a set of Vintage Wheels HA17 Hallibrand replicas 17x8.5 fronts and 17x10.5 rears. I'm running Hoosier A6 275/40ZR17 on the front and 315/35ZR17 on the rear.

Does anyone have any experience running wider wheels/tires. Vintage Wheels has new 17x9.5 for the fronts and 17x11 for the rears. I assume I could fit 295 on the front? Has anyone tried 335 on the rear?

Does anyone have any experience with running Avon 17" Radial Slicks? According to the specs, the Avon 290/645R17 tread is 12.2" wide, the A6 316/35ZR17 tread width is 11.4" wide. The Avon Rim choice is 9-11", so I could go square and run the same size tires front and back? Though I'm not sure I can get the Avons. Or, I will pickup the new Hoosier A7.

Any thoughts/advice?

Thanks...
Reply With Quote
  #2 (permalink)  
Old 01-30-2015, 04:01 PM
CC Member
Visit my Photo Gallery

 
Join Date: Oct 2013
Cobra Make, Engine: Backdraft #1333, Smeding 427
Posts: 93
Not Ranked     
Default

this may not be the definitive answer to your question but it's a data point. I have 20x11 Radenergie wheels for the rears on my Mercedes and run 305/25ZR-20 tires. I could get 315s on that wheel but I'd be hesitant to try 335s... however, with a 35 series tire this may be doable.
Reply With Quote
  #3 (permalink)  
Old 01-30-2015, 05:52 PM
Grey 65's Avatar
CC Member
Visit my Photo Gallery

 
Join Date: Aug 2013
Location: Haslet, TX
Cobra Make, Engine: BDR #888, Keith Craft 408
Posts: 344
Not Ranked     
Default

Quote:
Originally Posted by TimeForACobra View Post
Hello,

Backdraft Racing Roadster #785, delivered in Summer 2009. I have a set of wheels with street tires and a set of wheels for autocrossing.

For autocrossing, I have a set of Vintage Wheels HA17 Hallibrand replicas 17x8.5 fronts and 17x10.5 rears. I'm running Hoosier A6 275/40ZR17 on the front and 315/35ZR17 on the rear.

Does anyone have any experience running wider wheels/tires. Vintage Wheels has new 17x9.5 for the fronts and 17x11 for the rears. I assume I could fit 295 on the front? Has anyone tried 335 on the rear?

Any thoughts/advice?

Thanks...
Switch to 18x9's and 18x11's and run either Falken 615's or BFG Rivals and run in the SCCA CAM-S class.

If you are going to run 335's you will need at least an 11.5" wide wheel otherwise you are pinching the tire and will have less grip than a 315 would have on the same wheel.

Kevin.....
Reply With Quote
  #4 (permalink)  
Old 01-31-2015, 07:17 AM
CC Member
Visit my Photo Gallery

 
Join Date: May 2011
Location: Clarksville, MD
Cobra Make, Engine: Backdraft, Roush 427 SR/TW
Posts: 64
Not Ranked     
Default

Thanks for the info/advice.... Not yet sure what I'm going to do. I need to "finish" my A6's which shouldn't take long as I'm planning on attending Evolution Performance schools (levels 1 and 2) in addition to a local school/practice.

Thanks again.
Reply With Quote
  #5 (permalink)  
Old 02-19-2015, 04:26 AM
Bailey's Avatar
CC Member
Visit my Photo Gallery

 
Join Date: Apr 2004
Location: Jupiter, fl
Cobra Make, Engine: Backdraft #985 Custom Pro/ Street Race Car, full cage, dry sump 427W and G Force T-56 Fully Street Legal!!
Posts: 402
Not Ranked     
Default

The A6s work well, burned through several sets and the R6s too. 275s on the front (17 x 10), 335s on the rear (17 x 12). You may have to open up the front fenders to run 295s. Ran the 295s at Run and Gun s few years back, no noticeable difference. In a straight line you're fine, but you will have interferance when turning hard. I found 275s to work best on a 10" wheel. We couldn't get the tire temps up on the 295s
BTW, I have a used set for sale with a set of R6s and A6s with 3 heat cycles on them if interested. (they are bolt on, not peg drive)
PM sent
__________________
Life is short, live like you mean it!!
Live every day like it's your last. One day you will be right!

Last edited by Bailey; 02-19-2015 at 04:33 AM..
Reply With Quote
  #6 (permalink)  
Old 02-19-2015, 02:46 PM
CC Member
Visit my Photo Gallery

 
Join Date: Jul 2010
Location: McMurray, PA
Cobra Make, Engine: Superformance #522
Posts: 528
Not Ranked     
Default

Quote:
Originally Posted by Grey 65 View Post
Switch to 18x9's and 18x11's and run either Falken 615's or BFG Rivals and run in the SCCA CAM-S class.

If you are going to run 335's you will need at least an 11.5" wide wheel otherwise you are pinching the tire and will have less grip than a 315 would have on the same wheel.

Kevin.....
Cobra replicas are allowed in CAM-S?
Reply With Quote
  #7 (permalink)  
Old 02-19-2015, 05:44 PM
CC Member
Visit my Photo Gallery

 
Join Date: May 2011
Location: Clarksville, MD
Cobra Make, Engine: Backdraft, Roush 427 SR/TW
Posts: 64
Not Ranked     
Default

Yes I too have heard Cobra Replicas will be allowed in CAM-S. I'm watching for the next Fastrack as there may be a response to a letter asking for clarification. However we typically have 3-4 Cobras (replicas) and a 2 driver Daytona at most of our events so I would run whatever class everyone else is running to keep the competition.
Reply With Quote
  #8 (permalink)  
Old 02-19-2015, 05:52 PM
Grey 65's Avatar
CC Member
Visit my Photo Gallery

 
Join Date: Aug 2013
Location: Haslet, TX
Cobra Make, Engine: BDR #888, Keith Craft 408
Posts: 344
Not Ranked     
Default

Quote:
Originally Posted by vatdevil View Post
Cobra replicas are allowed in CAM-S?
Cobras are in CAM-S.

Kevin.....
Reply With Quote
  #9 (permalink)  
Old 02-19-2015, 06:56 PM
CC Member
Visit my Photo Gallery

 
Join Date: Jul 2010
Location: McMurray, PA
Cobra Make, Engine: Superformance #522
Posts: 528
Not Ranked     
Default

Quote:
Originally Posted by Grey 65 View Post
Cobras are in CAM-S.

Kevin.....
Min weight is 2600 lbs?


http://www.scca.com/assets/2015%20CA...%20B%20(2).pdf
Reply With Quote
  #10 (permalink)  
Old 02-19-2015, 07:00 PM
cycleguy55's Avatar
CC Member
Visit my Photo Gallery

 
Join Date: Feb 2014
Location: White City, SK
Cobra Make, Engine: West Coast, 460 CID
Posts: 2,844
Not Ranked     
Default

Quote:
Originally Posted by vatdevil View Post
I noticed that too. Some people are going to be looking for lead bars to bolt on.
__________________
Brian
Reply With Quote
  #11 (permalink)  
Old 02-20-2015, 04:46 AM
CC Member
Visit my Photo Gallery

 
Join Date: Jul 2010
Location: McMurray, PA
Cobra Make, Engine: Superformance #522
Posts: 528
Not Ranked     
Default

Quote:
Originally Posted by cycleguy55 View Post
I noticed that too. Some people are going to be looking for lead bars to bolt on.


Are your local regions running the separate CAM classes, or one single class?
Reply With Quote
  #12 (permalink)  
Old 02-20-2015, 11:57 AM
Grey 65's Avatar
CC Member
Visit my Photo Gallery

 
Join Date: Aug 2013
Location: Haslet, TX
Cobra Make, Engine: BDR #888, Keith Craft 408
Posts: 344
Not Ranked     
Default

Weight for CAM-S is 2,350lbs without driver. Doug Gill will be correcting the CAM rules...

Kevin.....
Reply With Quote
  #13 (permalink)  
Old 02-21-2015, 12:12 PM
CC Member
Visit my Photo Gallery

 
Join Date: May 2011
Location: Clarksville, MD
Cobra Make, Engine: Backdraft, Roush 427 SR/TW
Posts: 64
Not Ranked     
Default

Not sure how the CAM classes will be run locally.

Btw, My Backdraft Racing Roadster with 1/2 tank of gas, no driver, Roush 427 SRTW and TKO-600 is 2,567 lbs.

Last edited by TimeForACobra; 02-21-2015 at 12:14 PM..
Reply With Quote
  #14 (permalink)  
Old 02-24-2015, 11:38 PM
Grey 65's Avatar
CC Member
Visit my Photo Gallery

 
Join Date: Aug 2013
Location: Haslet, TX
Cobra Make, Engine: BDR #888, Keith Craft 408
Posts: 344
Not Ranked     
Default

See Updated Rules 2015 Classic American Muscle (pdf)

Kevin.....
Reply With Quote
Reply

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -7. The time now is 05:07 AM.


Powered by vBulletin® Version 3.8.0
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.6.0
The representations expressed are the representations and opinions of the clubcobra.com forum members and do not necessarily reflect the opinions and viewpoints of the site owners, moderators, Shelby American, any other replica manufacturer, Ford Motor Company. This website has been planned and developed by clubcobra.com and its forum members and should not be construed as being endorsed by Ford Motor Company, or Shelby American or any other manufacturer unless expressly noted by that entity. "Cobra" and the Cobra logo are registered trademarks for Ford Motor Co., Inc. clubcobra.com forum members agree not to post any copyrighted material unless the copyrighted material is owned by you. Although we do not and cannot review the messages posted and are not responsible for the content of any of these messages, we reserve the right to delete any message for any reason whatsoever. You remain solely responsible for the content of your messages, and you agree to indemnify and hold us harmless with respect to any claim based upon transmission of your message(s). Thank you for visiting clubcobra.com. For full policy documentation refer to the following link: CC Policy
Links monetized by VigLink