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 2Likes
03-29-2016, 02:23 AM
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CC Member
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Join Date: Feb 2008
Location: Melbourne,
vic
Cobra Make, Engine: 1965 registered Brushed Kirkham polished stripes, 427 FE kieth craft 482 efi.ss chassis and all the go gear .
Posts: 285
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Not Ranked
Billboards and tubes?
Hi guys,
Any one running tubes in their Billboards ?
Apart from constantly going flat , there are an awful lot of cracks !
Soul.
__________________
" And them boys in them Chevy's,are going to say Pipes!!! Look at them pipes !!!- Bill Cosby 200MPH.
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03-29-2016, 06:46 AM
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Senior Club Cobra Member
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Join Date: Mar 2005
Location: Manchester,
NH
Cobra Make, Engine: AK1085 (302 Street), HTM111 (427 Comp), CSX2375R (289 Comp) and COB5999 (427 S/C)
Posts: 19,007
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Not Ranked
No tubes....
Why are they cracked? Aged?
Might want to replace if cracking
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03-29-2016, 07:27 AM
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Senile Club Cobra Member
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Join Date: Feb 2001
Location: Buffalo, NY USA,
NY
Cobra Make, Engine: Superformance
Posts: 4,534
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Not Ranked
Quote:
Originally Posted by 1985 CCX
No tubes....
Why are they cracked? Aged?
Might want to replace if cracking
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They are cracked because they do not contain plasticizer additive used on street tires. "Billboards" are race tires and have an expected half life of a weekend. UV exposure and ozone cause the tires to crack. It is to be expected and is one of the reasons that they are molded with "NOT FOR HIGHWAY USE" on the sidewalls.
If you run them plan on a new set yearly.
__________________
"I'm high all right, but on the real thing....powerful gasoline and a clean windshield..."
rick@autoventureusa.net
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03-29-2016, 07:55 AM
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CC Member
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Join Date: Nov 1999
Location: Brisbane, Australia,
Q
Cobra Make, Engine: Contemporary CCX3117 427FE
Posts: 4,381
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Not Ranked
I'm not if "can be fixed by using tubes" meant that he actually fitted tubes, but here's an old comment about the Billboards:
Quote:
Originally Posted by Power Surge
I've had the billboards on my car for over 8k miles.
Only "bad" points I've experianced... They flat spot when they've sat. That goes away in a few miles. They leak air through the porous sidewalls. That can be fixed by using tubes. They bite very well, so if you hit a batch of "uneven" road (where the grind it down to lay fresh stuff and it's all lines) or going over a grated bridge, they will grab the ruts and pattern in the road and you will fight to keep the car straight.
Other than that, I love them. I will be putting another set on when these are done (they have tons of life left at 8k BTW).
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__________________
Craig
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03-29-2016, 08:45 AM
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Full Blown Member
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Join Date: Sep 2008
Cobra Make, Engine: KMP 427 S/C, Twin Paxton 511 FE
Posts: 2,594
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Not Ranked
I had a set of BB's for years and they never lost air but did have a big crack where the tread met the sidewall. They were sold as a set with wheels and the current owner still uses them. Going on 7 years!
I have another set that's 18 mos old with the same big crack along the tread/sidewall. Never had any air loss issues. Just waiting to get some pics done before I slap Avons on there.
For those that lose air - how old were they when it started?
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rodneym
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03-29-2016, 10:22 AM
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Senior Club Cobra Member
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Join Date: Mar 2005
Location: Manchester,
NH
Cobra Make, Engine: AK1085 (302 Street), HTM111 (427 Comp), CSX2375R (289 Comp) and COB5999 (427 S/C)
Posts: 19,007
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Not Ranked
I usually get 3-5 years out of them. However, our season is short and cars are under cover
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03-29-2016, 12:03 PM
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Senior CC Premier Member
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Join Date: Nov 2004
Location: SoCal,
CA
Cobra Make, Engine: CSX #4xxx with CSX 482; David Kee Toploader
Posts: 3,574
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Not Ranked
Quote:
Originally Posted by Mark IV
They are cracked because they do not contain plasticizer additive used on street tires. "Billboards" are race tires and have an expected half life of a weekend. UV exposure and ozone cause the tires to crack. It is to be expected and is one of the reasons that they are molded with "NOT FOR HIGHWAY USE" on the sidewalls.
If you run them plan on a new set yearly.
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Yup. These have less than 500 miles on them, then the car was parked for quite a while (about a year). One by one, they cracked and blew out. Some cracks so big I could fit my finger in them! What Mark IV says is true. I confirmed it with Goodyear..."made to buy on Friday, race the weekend and trash them on Monday".
AVONS now! 
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All that's stopping you now Son, is blind-raging fear.......
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03-29-2016, 12:05 PM
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Senior CC Premier Member
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Join Date: Nov 2004
Location: SoCal,
CA
Cobra Make, Engine: CSX #4xxx with CSX 482; David Kee Toploader
Posts: 3,574
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Not Ranked
Sorry, here's the pic...
__________________
All that's stopping you now Son, is blind-raging fear.......
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03-29-2016, 02:05 PM
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CC Member
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Join Date: Jan 2011
Cobra Make, Engine: Hi-Tech
Posts: 734
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Not Ranked
Is it possible that those vacuums might have something to do with the condition of your tires?
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03-29-2016, 02:10 PM
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Senior CC Premier Member
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Join Date: Nov 2004
Location: SoCal,
CA
Cobra Make, Engine: CSX #4xxx with CSX 482; David Kee Toploader
Posts: 3,574
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Not Ranked
Quote:
Originally Posted by Mongoose930
Is it possible that those vacuums might have something to do with the condition of your tires?
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HA! Never even noticed! House is being remodeled so it's a war zone! 
__________________
All that's stopping you now Son, is blind-raging fear.......
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03-29-2016, 03:10 PM
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CC Member
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Join Date: Jul 2006
Location: Redding,
CA
Cobra Make, Engine: FFR chassis and suspension, Mr. Bruce 289 FIA body
Posts: 1,066
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Not Ranked
I have two that go flat. sucks. Brand new, never run
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07-21-2016, 11:47 PM
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CC Member
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Join Date: Dec 2015
Location: SF Bay Area,
CA
Cobra Make, Engine: Unique Motorcars, Ford 427 FE Side Oiler
Posts: 82
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Not Ranked
My car has a set since I bought it 2K miles ago and previous owner put 3K on them. They have started to crack a bit so I swaped them to prevent the same sides to be exposed to UV.
I've been told that to keep them in the dark helps...
Anyone knows of any spray that could be used to help preserve them?
Thanks
Luke
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07-22-2016, 05:34 AM
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CC Member
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Join Date: Jan 2011
Cobra Make, Engine: Hi-Tech
Posts: 734
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Not Ranked
ERAChas, who used to post here quite often and knew his stuff, recommended Gold Eagle 303 protectant spray. I have purchased a bottle but I cannot confirm it works as my car is not on the road yet and my Goodyears have been in a dark corner for about 3 years now. https://www.goldeagle.com/product/30...ive-protectant |
07-22-2016, 08:31 AM
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CC Member
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Join Date: Oct 2010
Cobra Make, Engine: Superformance
Posts: 663
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Not Ranked
Quote:
Originally Posted by Mongoose930
ERAChas, who used to post here quite often and knew his stuff, recommended Gold Eagle 303 protectant spray. I have purchased a bottle but I cannot confirm it works as my car is not on the road yet and my Goodyears have been in a dark corner for about 3 years now. https://www.goldeagle.com/product/30...ive-protectant |
I can attest that the 303 protectant does work very well on Billboards. It also leaves a factory looking sheen to the sidewalls, too. Then again, maybe I just got lucky on my last set (car since sold)?  |
07-23-2016, 04:22 PM
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CC Member
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Join Date: Dec 2015
Location: SF Bay Area,
CA
Cobra Make, Engine: Unique Motorcars, Ford 427 FE Side Oiler
Posts: 82
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Not Ranked
Cool. Thanks guys!
Ordered my 303 and will let you know how it works. I have a set of racing wheels kept in the garage I will also spray to see how that helps.
Luke
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11-07-2016, 10:20 AM
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CC Member
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Join Date: Oct 2004
Location: Saratoga Springs,
UT
Cobra Make, Engine: FFR 3850, 95 Cobra 5.0 EFI, IRS, Pin Drive 15" real Magnesium Halibrands & Vintage Wheels, Billboards & Mickey Thompson S/T tires, Blue/Wht Stripes, Hoops, CSX Dash, Konis, VPMs, Torsen
Posts: 626
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Not Ranked
Billboard Tires
I run tubes because the magnesium wheels leak.
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11-07-2016, 02:33 PM
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CC Member
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Join Date: May 2002
Location: Syracuse,
NY
Cobra Make, Engine: Contemporary classics 3041,sbc 350(have no fear ford guys for there is a FE 428 in the garage waiting to be rebuilt & installed) but for now she is a driver while other projects take precidence.
Posts: 405
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Not Ranked
Quote:
Originally Posted by Larry N Johnson
I run tubes because the magnesium wheels leak.
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Larry,
Where did you get the tubes? And do you have some part numbers for them?
Thanks,
Dan
__________________
THOUGHT FOR THE DAY: There is more money being spent on breast implants and Viagra than on Alzheimer's research. This means that by 2030, there should be a large elderly population with perky boobs and huge erections and absolutely no recollection of what to do with them.
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11-07-2016, 03:03 PM
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CC Member
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Join Date: Oct 2004
Location: Saratoga Springs,
UT
Cobra Make, Engine: FFR 3850, 95 Cobra 5.0 EFI, IRS, Pin Drive 15" real Magnesium Halibrands & Vintage Wheels, Billboards & Mickey Thompson S/T tires, Blue/Wht Stripes, Hoops, CSX Dash, Konis, VPMs, Torsen
Posts: 626
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Not Ranked
Quote:
Originally Posted by avanti-176
Larry,
Where did you get the tubes? And do you have some part numbers for them?
Thanks,
Dan
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Dan,
Looking through all my receipts, there is one from Les Schwab Tires (local tire supply/service chain) for the following:
Product Code: 08443154
Product Description: MR14/15 TR13 Radial Passenger Tube
Price: $12.24
Date: 07-24-2004
Hope this helps. |
11-08-2016, 11:33 AM
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CC Member
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Join Date: May 2002
Location: Syracuse,
NY
Cobra Make, Engine: Contemporary classics 3041,sbc 350(have no fear ford guys for there is a FE 428 in the garage waiting to be rebuilt & installed) but for now she is a driver while other projects take precidence.
Posts: 405
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Not Ranked
That does help Larry, Thank you very much.
__________________
THOUGHT FOR THE DAY: There is more money being spent on breast implants and Viagra than on Alzheimer's research. This means that by 2030, there should be a large elderly population with perky boobs and huge erections and absolutely no recollection of what to do with them.
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11-08-2016, 11:38 AM
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CC Member
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Join Date: Oct 2004
Location: Saratoga Springs,
UT
Cobra Make, Engine: FFR 3850, 95 Cobra 5.0 EFI, IRS, Pin Drive 15" real Magnesium Halibrands & Vintage Wheels, Billboards & Mickey Thompson S/T tires, Blue/Wht Stripes, Hoops, CSX Dash, Konis, VPMs, Torsen
Posts: 626
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Not Ranked
Quote:
Originally Posted by avanti-176
That does help Larry, Thank you very much.
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Good and thanks for the feedback. |
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