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CC Advertisers
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06-23-2004, 12:06 PM
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CC Member
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Join Date: Jun 2004
Cobra Make, Engine:
Posts: 7
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Not Ranked
17" wheels....
We've just finalized the purchase on our new SPF #1845 and I'm seriously considering a set of PSE 17" knock-offs to complete the setup. My question is, I've enquired into a set of 17" wheels with a 5" backspacing, is this an adequate amount or am I going to run into “issues” when it comes time for mounting. Additionally, in our e-mails he posted something to the effect of..." the wheels fit Trigo adaptors, not the new SPF ones," and unfortunately this threw me for a loop because I was under the impression that all the SPF pin drive setups where the same. Can anyone set me straight on what the correct offset/backspacing I'll need to fit 335/30/17s on the rear with 275/40/17s on the front.
Thanks in advance!
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06-23-2004, 12:54 PM
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CC Member
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Join Date: Oct 2003
Location: Scappoose,
OR
Cobra Make, Engine: ERA 659
Posts: 17
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Not Ranked
Hi Liv4spd,
You are going to get your best advice directly from SPF, I wouldn't hesitate to call them if you haven't already, or from other SPF owners who have 17" wheels. I have an ERA and have ordered 17" pin drive wheels from PS Engineering, which I'm still waiting for by the way. I am using a 17"x9" wheel with a 275/40ZR17 tire in front with a 5.30" back spacing. In the rear I am using a 17"x11" wheel with a 315/35ZR17 tire with a 4.50" back spacing. I doubt if these numbers will be correct for your car, but they should be in the ball park. I would also call Trigo or PS Engineering (I will mention they are hard to get ahold of, so keep trying, and try early in the morning like 6-7am PDT). They have undoubtedly made 17" wheels for SPF's before. It would be best to confirm the numbers from at least two different sources, since that is not something you want to get wrong. Measure twice and cut once.  Hope that helps some. |
06-24-2004, 09:01 PM
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CC Member
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Join Date: Feb 2002
Location: Bristol, WI,
Posts: 132
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Not Ranked
When you called PSE did you tell them it was for a new SPF? I ordered a set for my SPF and they sent the correct ones.
__________________
HAVING TOO MUCH FUN
Scott
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06-24-2004, 09:16 PM
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CC Member
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Join Date: Jan 2002
Location: Northern California,
CA
Cobra Make, Engine: -Sold- Contemporary 427S/C # CCX-3152 1966 427 Med Rise Side Oiler, 8v 3.54:1 Salisbury IRS, Koni's.. (Now I'm riding Harleys)
Posts: 2,567
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Not Ranked
Phil Schmidt is a master wheelwright. If he says they will fit they will fit. I struggled with the same issues and in the end let him decide on whether I went 5.5 or 6". I couldn't be more pleased with the result.
I have always had issue with the cobbled together look of the 427 Cobra and what happened when they put the independent rear in the original cars. Admit it, it looks like a high school shop project. The fit is terrible. Go look at my gallery, you can't slip your hand between my tire and rear fender at any point. They have never rubbed once. I opted for the 11" wheel with a 315/35. It is a common (less expensive tire) size as it is OEM for the newer vette. I can't say enough good things about PSE, you'll feel the same way soon.
http://www.clubcobra.com/photopost/s...sort=1&cat=500
__________________
michael
A man that is young in years, may be old in hours, if he have lost no time. But that happeneth rarely. Generally, youth is like the first cogitations, not so wise as the second. For there is a youth in thoughts, as well as in ages... Sir Francis Bacon (1561-1626)
Last edited by SCOBRAC; 06-24-2004 at 09:21 PM..
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06-24-2004, 09:19 PM
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CC Member
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Join Date: Jan 2002
Location: Northern California,
CA
Cobra Make, Engine: -Sold- Contemporary 427S/C # CCX-3152 1966 427 Med Rise Side Oiler, 8v 3.54:1 Salisbury IRS, Koni's.. (Now I'm riding Harleys)
Posts: 2,567
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Not Ranked
Indeed the pins on the SPF and the Trigo are different. Trigo uses 1/2" diameter pins on either a 5 on 4 1/2 or 4 and 3/4 center. I think SPF pins are smaller in diameter, sorry I don't know the size.
__________________
michael
A man that is young in years, may be old in hours, if he have lost no time. But that happeneth rarely. Generally, youth is like the first cogitations, not so wise as the second. For there is a youth in thoughts, as well as in ages... Sir Francis Bacon (1561-1626)
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06-25-2004, 05:52 AM
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CC Member
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Join Date: Nov 2003
Location: Dacula,
GA
Cobra Make, Engine: Porsche 928 S4
Posts: 408
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Not Ranked
Here's what I came up with for SPF #298. Front: 17x9.5 5.28 backspace. Rear: 17x11 4.875 backspace. My wheels don't use the knockoff adapter so my own backspacing is .375 less.
With 315/35 and 275/40's, they clear everything just right, they are in enough to allow the car to sit low but still clear on the inside.
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06-25-2004, 09:29 AM
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CC Member
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Join Date: Jun 2004
Cobra Make, Engine:
Posts: 7
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Not Ranked
Thanks for all your feedback guys!!  |
06-25-2004, 02:30 PM
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Senior Club Cobra Member
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Join Date: Nov 2003
Location: Billings,
MT
Cobra Make, Engine:
Posts: 365
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Not Ranked
Liv4,
Can you tell me what the wheels will cost?
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A beautiful car, precisely assembled. Unfortunately I don't fit. Sold it after four hundred miles. Well, at least now I know a Cobra is not a car I can own.
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06-26-2004, 10:26 PM
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CC Member
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Join Date: Jan 2002
Location: Northern California,
CA
Cobra Make, Engine: -Sold- Contemporary 427S/C # CCX-3152 1966 427 Med Rise Side Oiler, 8v 3.54:1 Salisbury IRS, Koni's.. (Now I'm riding Harleys)
Posts: 2,567
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Not Ranked
Of course I'm on crack most of the time I am here... The pins on Trigo wheels are 3/4" and bolt on over 1/2" lug nuts. I think the original cars used 1/2" pins. I think my PSE wheels were $650 each in natural finish. I can't remember. I likr them that well.
__________________
michael
A man that is young in years, may be old in hours, if he have lost no time. But that happeneth rarely. Generally, youth is like the first cogitations, not so wise as the second. For there is a youth in thoughts, as well as in ages... Sir Francis Bacon (1561-1626)
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