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06-04-2005, 03:39 PM
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CC Member
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Join Date: Mar 2002
Location: melbourne florida,
fl
Cobra Make, Engine: backdraft racing 302 ford
Posts: 180
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Not Ranked
Tire preasure
Hi
What tire preasure for 15" Tires. My freind has a super performance and he says to run 21 to 26 psi whats backdraft say?
Thanks ED
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Ed
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06-04-2005, 08:40 PM
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Beam Me Up Scottie
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Join Date: Aug 2004
Location: Squantum (part of Quincy),
MA
Cobra Make, Engine: SPF1049 Titanium w/black stripes, 351W with Trick Flow Heads, Tremec 3550
Posts: 7,592
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Not Ranked
I also have a Superformance Cobra, but I have 18 PSI in the tires for normal driving and they work very well at that pressure. For road racing, use 25 PSI. All pressures cold, not hot. This info from the owners manual. You did get one????
__________________
Warren
'Liberals are maggots upon the life of this planet and need to get off at the next rotation.' (Jamo 2008)
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06-04-2005, 08:42 PM
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Beam Me Up Scottie
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Join Date: Aug 2004
Location: Squantum (part of Quincy),
MA
Cobra Make, Engine: SPF1049 Titanium w/black stripes, 351W with Trick Flow Heads, Tremec 3550
Posts: 7,592
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Not Ranked
Forgot to mention that the tire are Goodyear
Front Wheels & Tires: 8” wide rim 255/60 R15
Rear Wheels & Tires: 10” wide rim 275/60R15
__________________
Warren
'Liberals are maggots upon the life of this planet and need to get off at the next rotation.' (Jamo 2008)
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06-05-2005, 02:18 PM
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Senior Club Cobra Member
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Join Date: May 2004
Location: Imperial,
CA
Cobra Make, Engine: Backdraft Racing BDR144
Posts: 238
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Not Ranked
BDR Tire Pressure Recomedations
Ed,
Armond at CA Cobra recommended the following tire pressures for the BFG Radial T/A 15" tires.
Front BFG P235/60R15 = 28 PSI
Rear BFG P295/50R15 = 25 PSI
I have used these recommendations and they seem to work very well for me.
__________________
Wayne W.
Backdraft Racing BDR144
Pewter with Steel Gray Stripes
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06-22-2005, 10:11 AM
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CC Member
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Join Date: Apr 2001
Location: S.Elgin,
IL
Cobra Make, Engine: 396 long block, PROBE Forged Dished pistons 8.75 to 1 and Vic Jr. heads from Engine Factory. Tremec TKO. BDR#244 Sterling Gray/Silver stripes. 17in polished wheels, glove box and tonneau cover.
Posts: 1,846
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Not Ranked
For the 17in wheel combo:
29 on the back
28 front
Sid
__________________
T.S.B. of The West Side Cobra Club
N.D.N.P.N.P. 
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06-22-2005, 11:25 AM
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CC Member
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Join Date: Jul 2001
Location: Southwest,
WI
Cobra Make, Engine: Shell Valley, Mopar thingy (small block of course)
Posts: 2,215
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Not Ranked
With the BFG 15" wheels I use 32psi all around. Tried different combo's from 26psi on up. The grip (if you can call it that with the BFGs) is not noticably different, but the response is much better than the low pressures.
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Brent Dolphin
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06-23-2005, 02:06 PM
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CC Member
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Join Date: Aug 2003
Location: Gilbert,
AZ
Cobra Make, Engine: Backdraft #90, 351w,Tremec 3550, SB100 SOLD
Posts: 577
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Not Ranked
thunder1
Well, I can see all the answers probably just cleared up the old tire pressure question with no doubt! Ha! It looks to me like a Backdraft with its BMW based suspension will have its own set of tire pressure settings. So, I can only agree with Secret Squirrel and go with 28 front and 25 rear. Of course, I got the same numbers from his source, Armond at California Cobra. My car runs and sticks great at this pressure. But play around with it some, you may have better luck with other settings.
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06-23-2005, 03:00 PM
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Senior Club Cobra Member
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Join Date: Mar 2001
Location: Southern Connecticut,
CT
Cobra Make, Engine: SPF - 351W, 944 non-turbo
Posts: 2,105
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Not Ranked
Considering the light weight of the car and the larger than normal size of the tires I would think that anything over low 20s is reducing the contact patch a lot.
Bob
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06-23-2005, 04:39 PM
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CC Member
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Join Date: Jul 2001
Location: Southwest,
WI
Cobra Make, Engine: Shell Valley, Mopar thingy (small block of course)
Posts: 2,215
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Not Ranked
I probably don't have the optimal contact patch, but the stripes on the pavement cover the whole tread width and radial tires aren't as sensitive to pressure as the bias ply. The difference between 26# and 32# is dramatic. But then I don't have a Backdraft and they may react to tire pressures differently.
__________________
Brent Dolphin
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