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02-02-2012, 02:20 PM
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CC Member
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Join Date: Jul 2007
Location: Sydney Australia,
NSW
Cobra Make, Engine: RMC with 6 litre 307KW LS2, Comp Cam, 348rwhp & 532.5 ftlb of torque with 6L80E Tiptronic Transmission
Posts: 1,400
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Not Ranked
Upgrading rear tyres and wheels
At the moment, I have two 315x35x17" Sumitomos on 10 1/2" x 17" Vintage Pin Drive rims which have only done 2,500 k's fitted to the rear of my Cobra. I am considering changing the look of my car to get a more beefy appearance in the rear wheel department by fitting 295x50Rx15" B.F. Goodrich Radial T/A 's tyres to new 10 1/2" x 15" Vintage Pin Drives.
I am seeking expressions of interest from anyone who might be interested in purchasing the two 315's on 17" Vintage Knock Offs for $1,000. That price is for the rim and tyre only and does not include the Adapters or Spinner Kit.
Regards
Baz
Last edited by Baz; 02-02-2012 at 02:22 PM..
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02-02-2012, 02:55 PM
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CC Member
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Join Date: Aug 2009
Location: Adelaide,
SA
Cobra Make, Engine: AP 289FIA 'English' spec.
Posts: 13,152
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Not Ranked
That's a good way to go Baz. IMO, the 15" wheels will look great....very period correct, and as you say, "beefy". Worth doing.
Cheers,
Glen
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02-02-2012, 02:57 PM
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CC Member
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Join Date: Nov 2009
Location: Cheltenham,
Vic
Cobra Make, Engine: Classic Revival CR3516, LS3, Aussie Mike'd T-56, 3.70 LSD, AP brakes, Penske shocks
Posts: 1,616
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Not Ranked
Baz what is the offset, the stud pattern, and the centre hole diameter?
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Ben in AU
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02-02-2012, 03:32 PM
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CC Member
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Join Date: Nov 2004
Location: Sydney,
NSW
Cobra Make, Engine: Classic Revival #3199. 366ci L76, T56 6 speed, Blue circle custom paint, Australias most original cobra 2009-2010
Posts: 2,396
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What about the fronts Baz?
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Proudly registered since 2013.
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02-02-2012, 04:54 PM
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CC Member
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Join Date: Nov 2008
Location: Brisbane Australia. Cobra:Arntz Chev 454,
Posts: 847
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Baz have you considered these instead of the BFGs?
Mickey Thompson Performance Tires & Wheels
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Don.
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02-02-2012, 05:11 PM
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CC Member
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Join Date: May 2002
Location: Brisbane Australia,
QLD
Cobra Make, Engine: RMC under re-construction, GenIV with tremec 600, Jag 3.31 L/S diff
Posts: 3,318
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It's impossible to soar like an eagle when you're surrounded by turkeys.
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02-02-2012, 06:42 PM
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CC Member
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Join Date: Feb 2002
Location: Alice Springs, central Australia,
NT
Cobra Make, Engine: Classic revival kit (CR3181), gen III engine, T56 6 speed box, AU XR8 lsd diff
Posts: 5,699
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Not Ranked
There is only 1 choice.
Has to be BillBoards.
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Cruising in 5th
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Never be afraid to do something new, Remember, Amateurs built the Ark: Professionals built the Titanic.
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02-02-2012, 06:58 PM
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CC Member
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Join Date: Jul 2007
Location: Sydney Australia,
NSW
Cobra Make, Engine: RMC with 6 litre 307KW LS2, Comp Cam, 348rwhp & 532.5 ftlb of torque with 6L80E Tiptronic Transmission
Posts: 1,400
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Quote:
Originally Posted by Tenrocca
What about the fronts Baz?
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Hi Andrew,
I am leaving the 17's and the Sumo's on the front. I'm quite haoppy with the appearance in that area and also their grip isn't too bad either.
Baz |
02-02-2012, 07:18 PM
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CC Member
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Join Date: Jan 2001
Location: Sunbury,
VIC
Cobra Make, Engine: Rat Rod Racer, LS1 & T56
Posts: 5,391
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Are you going for 15's for drag racing? Those TA's may not be the best choice. Maybe look at some drag radials. BF Goodrich make some with tread.
Cheers
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Mike Murphy
Melbourne Australia
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02-02-2012, 07:24 PM
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CC Member
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Join Date: Jun 2007
Location: Sunshine Coast Qld,
QLD
Cobra Make, Engine: Harrison # 80; Ford 5.0L HO Trickflow heads, cam and rockers and MassFlow EFI
Posts: 3,482
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Baz, will your brake and callipers fit into the reduced space of the 15" wheel?
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Merv
Ford Cobra
Harrison #80.
Peregian Beach
Sunshine Coast Qld.
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02-02-2012, 07:39 PM
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CC Member
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Join Date: Jul 2007
Location: Sydney Australia,
NSW
Cobra Make, Engine: RMC with 6 litre 307KW LS2, Comp Cam, 348rwhp & 532.5 ftlb of torque with 6L80E Tiptronic Transmission
Posts: 1,400
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Quote:
Originally Posted by Modena
Baz what is the offset, the stud pattern, and the centre hole diameter?
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Hi Modena,
Thanks for your interest. I have changed my mind after some advice on a PM. I have been recommended a set of Goodyear 285x40x17 GS-D3's for the rears which have a much higher wall height and just what I am looking for. This way, I don't have to buy a new set of 15" rims and end up with the look that I am after.
Thanks everyone for their interest.
Baz |
02-02-2012, 07:41 PM
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CC Member
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Join Date: Aug 2003
Location: Hunter valley wine country,
NSW
Cobra Make, Engine: Homebush. Lexus quad cam V8, R154 Supra box. Oh what a feeling.
Posts: 363
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Hey Baz
Any new pics of your car? Haven't seen any since you finished it.
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02-02-2012, 08:08 PM
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CC Member
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Join Date: Nov 2006
Location: Gold Coast Queensland,
QLD
Cobra Make, Engine: Harrison#97 LS7 / T56
Posts: 1,683
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Quote:
Originally Posted by Baz
Hi Modena,
Thanks for your interest. I have changed my mind after some advice on a PM. I have been recommended a set of Goodyear 285x40x17 GS-D3's for the rears which have a much higher wall height and just what I am looking for. This way, I don't have to buy a new set of 15" rims and end up with the look that I am after.
Thanks everyone for their interest.
Baz
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Hey Baz...
You might want to re-check that ....
I'm pretty sure that the "Wall Height" on the Sumitomos will work out to be 110.25 mm , and the GS-D3 Goodyears to be 114 mm....
That's only a "flea's doodle" difference !
Aren't the "Middle numbers" ......e.g. 315/ 35/17...and 285/ 40/17... on all of the tyres sizes a "percentage" of the width ?
i.e. 315 X 35% = 110.25mm
285 X 40% = 114.00mm
Difference in "Wall Height" = 3.75mm ( 15/100ths of an inch )
Have I got this wrong ??
Cheers,
Warren. |
02-02-2012, 08:26 PM
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CC Member
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Join Date: Feb 2002
Location: Alice Springs, central Australia,
NT
Cobra Make, Engine: Classic revival kit (CR3181), gen III engine, T56 6 speed box, AU XR8 lsd diff
Posts: 5,699
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Not Ranked
You have it 100% correct Wazza (as if you doubted yourself)
__________________
Cruising in 5th
---------------------------------------------
Never be afraid to do something new, Remember, Amateurs built the Ark: Professionals built the Titanic.
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02-02-2012, 09:07 PM
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CC Member
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Join Date: Jun 2007
Location: Sunshine Coast Qld,
QLD
Cobra Make, Engine: Harrison # 80; Ford 5.0L HO Trickflow heads, cam and rockers and MassFlow EFI
Posts: 3,482
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Not Ranked
Yep. I have the 285 40s in Sumitomo.
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Merv
Ford Cobra
Harrison #80.
Peregian Beach
Sunshine Coast Qld.
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02-02-2012, 09:31 PM
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CC Member
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Join Date: Jan 2001
Location: Sunbury,
VIC
Cobra Make, Engine: Rat Rod Racer, LS1 & T56
Posts: 5,391
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Are you still running round eith rego height suspension? Dropping it a couple of inches front and bsck will make the tyres fill the guards much better. Probably make it handle better too. Mine was pretty horrible with the suspension wound up both in looks and ride.
Just make sure your tyres clear the edges of the guards. From my memory of your build pics your wheel offsets put the tyres out near the lip. You wouldnt want one to rub and stuff up your nice paint. Thats one of the reasons i didnt paint mine before driving it. Ive found a few spots where the tyres rub and fixed them now.
Cheers
__________________
Mike Murphy
Melbourne Australia
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02-02-2012, 09:40 PM
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CC Member
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Join Date: Jul 2007
Location: Sydney Australia,
NSW
Cobra Make, Engine: RMC with 6 litre 307KW LS2, Comp Cam, 348rwhp & 532.5 ftlb of torque with 6L80E Tiptronic Transmission
Posts: 1,400
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Not Ranked
Quote:
Originally Posted by Aussie Mike
Are you still running round eith rego height suspension? Dropping it a couple of inches front and bsck will make the tyres fill the guards much better. Probably make it handle better too. Mine was pretty horrible with the suspension wound up both in looks and ride.
Just make sure your tyres clear the edges of the guards. From my memory of your build pics your wheel offsets put the tyres out near the lip. You wouldnt want one to rub and stuff up your nice paint. Thats one of the reasons i didnt paint mine before driving it. Ive found a few spots where the tyres rub and fixed them now.
Cheers
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Thanks Mike. Everything fits just right now.
Baz |
02-02-2012, 09:45 PM
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CC Member
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Join Date: Jul 2007
Location: Sydney Australia,
NSW
Cobra Make, Engine: RMC with 6 litre 307KW LS2, Comp Cam, 348rwhp & 532.5 ftlb of torque with 6L80E Tiptronic Transmission
Posts: 1,400
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Not Ranked
Quote:
Originally Posted by Wazza
Hey Baz...
You might want to re-check that ....
I'm pretty sure that the "Wall Height" on the Sumitomos will work out to be 110.25 mm , and the GS-D3 Goodyears to be 114 mm....
That's only a "flea's doodle" difference !
Aren't the "Middle numbers" ......e.g. 315/35/17...and 285/40/17... on all of the tyres sizes a "percentage" of the width ?
i.e. 315 X 35% = 110.25mm
285 X 40% = 114.00mm
Difference in "Wall Height" = 3.75mm ( 15/100ths of an inch )
Have I got this wrong ??
Cheers,
Warren.
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Thats right Warren, but the Goodyears are half an inch larger in the overall diameter which is what I'm after.
Baz |
02-02-2012, 09:52 PM
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CC Member
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Join Date: Jan 2001
Location: Sunbury,
VIC
Cobra Make, Engine: Rat Rod Racer, LS1 & T56
Posts: 5,391
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Not Ranked
1/2" is going to be hard to pick as it's only 1/4" top and bottom. I think they will just appear to look bigger because they have a taller sidewall. The gap to the guards will be about the same.
Cheers
__________________
Mike Murphy
Melbourne Australia
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02-02-2012, 10:08 PM
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CC Member
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Join Date: Apr 2006
Location: Mildura,
vic
Cobra Make, Engine: FFR Coupe, 416ci of LS goodness
Posts: 2,349
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The larger tyres will throw your speedo out Baz, along with the tune for your shift points in the auto.
Just a thought.
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