M/T ET Street tire question
#354509
06/22/09 11:23 AM
06/22/09 11:23 AM
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Joined: Jun 2005
Posts: 326 Davenport, IA
70shaker
OP
enthusiast
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OP
enthusiast
Joined: Jun 2005
Posts: 326
Davenport, IA
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Just mounted a set of 275-60 ET Streets on my Challenger and I am going to run it down the track soon. I do not have tubes. This is the first time on the track in 20 plus years. Do I need to screw these to the rims?
What is a good starting point for tire pressure? Also what is a good or safe range to run these tires?
Car is 70 Challenger. 472 hemi on pump gas, 4 speed, 4:30 gears.
Thanks
Ex Hemi Racer 70 Challenger Hemi 4 speed clone
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Re: M/T ET Street tire question
[Re: 70shaker]
#354510
06/22/09 11:26 AM
06/22/09 11:26 AM
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Joined: Jan 2003
Posts: 13,492 Marion, South Carolina [><]
an8sec70cuda
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 13,492
Marion, South Carolina [><]
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I'd start with 17 psi and go UP from there. If it hooks hard it will most likely spin the rim inside the tire a little, but screws are not mandatory. If the track is good, I will run 19.5 to 20 psi in mine, although I'm running the bigger 295-65 radials. I have been almost as fast on the 275-60's though. CHIP
CHIP '70 hemicuda, 575" Hemi, 727, Dana 60 '69 road runner, 440-6, 4 speed, Dana 60 '71 Demon 340, no drivetrain, on blocks behind the barn '73 Chrysler New Yorker, 440, 727, 8.75 '90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt '06 GMC 2500HD LBZ Duramax
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Re: M/T ET Street tire question
[Re: 70shaker]
#354511
06/22/09 11:27 AM
06/22/09 11:27 AM
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Joined: Jan 2003
Posts: 6,266 Renton Washington
Triple Threat
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master
Joined: Jan 2003
Posts: 6,266
Renton Washington
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Are these the Radial or Bias ply Version? If they're radial, you don't use tubes.
-Dustin 67 Dart, 9 second, 392" G3 Hemi 68 Barracuda 340 F/SA
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Re: M/T ET Street tire question
[Re: 70shaker]
#354513
06/22/09 11:39 AM
06/22/09 11:39 AM
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Anonymous
Unregistered
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Anonymous
Unregistered
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I run 15 lbs in mine,she seems to like it there best, i started at 20 and made my way down others at the track run the same pressure..
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Re: M/T ET Street tire question
[Re: 70shaker]
#354514
06/22/09 12:08 PM
06/22/09 12:08 PM
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Joined: Aug 2003
Posts: 43,719 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,719
Bend,OR USA
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The ET Street Radail may not be the best street strip tire for your car due to the 4 speed I don't know which one would be better, sorry. I do run the MT 315x60x15 on my car and have found that no two tire gauges are exactly the same, I use the same gauge now and run 18 to 22 lbs depending on the track I'm at Buy a good gauge and try different pressures to find out what your car wants
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: M/T ET Street tire question
[Re: 70shaker]
#354515
06/22/09 12:26 PM
06/22/09 12:26 PM
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Joined: Jan 2003
Posts: 24,562 Brookeville, Md
Mr.Yuck
Not enough dumb comments...yet
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Not enough dumb comments...yet
Joined: Jan 2003
Posts: 24,562
Brookeville, Md
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I didn't screw mine. But then again the car was only running 12.0's w/ a 1.65 foot. I can tell you they do need a "break in" period. Mine seemed to start hooking better after the 2-3rd time to the track. And as mentioned 17 is a good place to start. Whoops radials need more pressure, they aren't made to "wrinkle" they will "cup". Try 20-22lbs. And yeah Hemi + 4 speed + 4.30's =
Last edited by SWINGIN\'72; 06/22/09 12:27 PM.
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Re: M/T ET Street tire question
[Re: Mr.Yuck]
#354516
06/22/09 06:56 PM
06/22/09 06:56 PM
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Joined: Nov 2003
Posts: 4,027 Dearborn Hts, MI
Sledge_57
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master
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Dearborn Hts, MI
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I have the same tires and a slow car, but I started at 22psi and kept picking up every time I lowered the pressure until I got to 18psi which then hooked hard enough to snap an axle. So I'd say the 17-18psi range sounds like a good place to start too.
No tubes or screws in mine but like I said I'm slow .........
Doug
1967 "Pedal Car" 500" low deck , TF 727, 4.30 Locker Best to Date: 11.67 @ 114.9 1.64 60ft
"Kids in cars cause accidents. Accidents in cars cause kids..."
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Re: M/T ET Street tire question
[Re: KatFysh]
#354518
06/23/09 12:15 AM
06/23/09 12:15 AM
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Joined: Jan 2003
Posts: 6,266 Renton Washington
Triple Threat
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master
Joined: Jan 2003
Posts: 6,266
Renton Washington
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My car will hook with them anywhere from 15-22+ The more air i have in them, the faster the car 60s.
-Dustin 67 Dart, 9 second, 392" G3 Hemi 68 Barracuda 340 F/SA
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Re: M/T ET Street tire question
[Re: Triple Threat]
#354519
06/23/09 07:43 AM
06/23/09 07:43 AM
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Joined: Jan 2003
Posts: 13,492 Marion, South Carolina [><]
an8sec70cuda
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 13,492
Marion, South Carolina [><]
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Quote:
My car will hook with them anywhere from 15-22+ The more air i have in them, the faster the car 60s.
Mine still hooks with lower pressure, but it has kept getting quicker every time I raised the pressure. CHIP
CHIP '70 hemicuda, 575" Hemi, 727, Dana 60 '69 road runner, 440-6, 4 speed, Dana 60 '71 Demon 340, no drivetrain, on blocks behind the barn '73 Chrysler New Yorker, 440, 727, 8.75 '90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt '06 GMC 2500HD LBZ Duramax
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Re: M/T ET Street tire question
[Re: an8sec70cuda]
#354520
06/23/09 08:26 AM
06/23/09 08:26 AM
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Joined: Feb 2006
Posts: 351 michigan
64ssmax
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michigan
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Rim width has alot to do with where your air pressure should be. Also your tire pressure gage may give you a different reading than someone elses meaning one gage may read 10 lbs and another gage may read 12 lbs. Like above start in the mid 20's and lower from there. You need to just look at the wear pattern on the tire to dial it in.
"Political correctness is a doctrine, fostered by a delusional, illogical minority, and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a turd by the clean end"
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Re: M/T ET Street tire question
[Re: fourgearsavoy]
#354522
06/23/09 10:24 PM
06/23/09 10:24 PM
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Joined: Nov 2004
Posts: 892 USA
krw71ragtop
super stock
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super stock
Joined: Nov 2004
Posts: 892
USA
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Quote:
I sure am glad this thread came up because I bought a set for my Savoy and I am almost done with the engine.I cant wait to start the heat cycles Gus
Same here Gus ! Just got mine last Friday. Hope to have my car done before summer is over. I had some of the same questions and will be watching this thread. Mine are Greg Weld wheels 15X8, P275/60/R15's
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Re: M/T ET Street tire question
[Re: 9 Sec Phill]
#354524
06/24/09 08:35 AM
06/24/09 08:35 AM
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Joined: May 2008
Posts: 902 Mopar Lane,Mississippi
67HEMI
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super stock
Joined: May 2008
Posts: 902
Mopar Lane,Mississippi
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17-18 psi on mine with screws.
'33 Plymouth 5 Window Coupe Blown Aluminum HEMI w/bolt ons (under construction)
'69 Chrysler 300 Convertible 375 HP 440
'71 Plymouth Duster 360 W/EFI (Wife's Ride)
'12 Ram MegaCab Dually 6.7 Cummins
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Re: M/T ET Street tire question
[Re: Triple Threat]
#354525
06/24/09 08:40 AM
06/24/09 08:40 AM
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Joined: Sep 2004
Posts: 22,873 Chicken coop
dustergirl340
Chicken Little
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Chicken Little
Joined: Sep 2004
Posts: 22,873
Chicken coop
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Quote:
My car will hook with them anywhere from 15-22+ The more air i have in them, the faster the car 60s.
same here
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