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07-24-2014, 05:33 PM
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#1 |
 
Drives: 2013 ZL1 Join Date: Jun 2013
Location: Austin
Posts: 124
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MT ET street radial II pressures
What pressures are people running on their MT ET street radial II tires. Both track and street if you use them in both settings.
I run these on the back and love the grip. I have been running them at 32-34 like the stock tires, but not sure that is right. Also, does anybody know the speed rating for these tires? Thanks |
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07-24-2014, 05:45 PM
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#2 |
 Drives: 2021 ZLE Join Date: Nov 2012
Location: ontario
Posts: 99
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I also had the same question about the mickeys and the air pressure , I have 750rwhp and at around 140-150km the rear of the car is very unstable when I'm on it, I'm currently running them on the street at 27psi
any thoughts? |
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07-24-2014, 07:41 PM
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#3 |
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Going for Plaid
Drives: 2011 C6 Join Date: Jan 2010
Location: Phoenix
Posts: 885
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I ran my Hoosiers at 16-18psi on the track and 25-30psi on the street. At the track the lower pressure helps the sidewall flex more allowing the tire to bite and give you a good 60ft without spinning. The softer sidewall makes for that floaty feeling in the rear.
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2014 ZL1, manual trans, carbon hood insert, Rotofab, Pacesetter 1 7/8" headers, 1" drop BMR springs, stock pulleys, 91 octane tune, 545rwhp & 515rwtq
Serviced and modded by Cordes Performance. 2011 C6, 750rwhp, forged LS3, ported LSA heads, Vortech Ti-trim, 227/243 115+4 Lunati cam, ported LS3 intake, Alky Control methanol, Pfadt sways/shocks/trans mounts, Pfadt tri-y headers(Sold 6/28/14) |
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07-24-2014, 08:12 PM
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#4 |
      Drives: none Join Date: Aug 2011
Location: DFW area
Posts: 1,844
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Mine work best at 26psi on the street. Any more and they feel "loose" under hard throttle.
At the track they dead hook at 20psi. |
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07-24-2014, 08:22 PM
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#5 |
    
Drives: '21 ZLE A10 Join Date: May 2012
Location: Mechanicsville, VA
Posts: 6,808
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after many different trial pressure, my car with an auto likes 17-18 psi at the track and street is fine at 29-30psi.
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'21 ZLE A10 Wild Cherry PDR 2:00.78 VIR Full 10.68@131.69 1.68 60'
'17 ZL1 A10 Mosaic Black PDR/Nav 2:03.08 VIR Full 11.003@129.2 1.75 (sold) '15 Z/28 #325 Black a/c & stereo. 2:10.1 VIR Full (sold) '12 ZL1 A6 Black 10.52@131 1.55 60' 2:13 VIR Full (sold) |
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07-24-2014, 09:25 PM
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#6 | |
Drives: 2012 Camaro ZL1 Join Date: Jun 2014
Location: GA
Posts: 167
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07-25-2014, 10:29 AM
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#7 |
 
Drives: Camaro ZL1 Join Date: May 2012
Location: Houston
Posts: 233
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Agree with stephen - 17/18 psi cold for track (20 hot), and around 30 on the street. They feel more stable around 32 psi, but less straight line traction at that pressure.
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2012 A6 Coupe 630RWHP 10.93@125
Mods: ID850 Injectors; D3PE HX, Reservoir & Atmospheric Catch-Can; LPE 2.55 Upper & 9.1 Lower Pulleys w/ ATI Damper; LPE Idler Pulley Relocation Bracket; "Green" Serp. Belt; Cat delete;ADM Exhaust Override; Magnaflow X-Pipe Muffler (in addition to stock mufflers); Cold Air Inductions CAI; 160 thermostat; LS9 Isolator; Port/polish snout and intake runners; LPE GT9 camshaft with dual springs and titanium retainers; Kenne Bell BAP, Install and Engine Tune by Serious Hp; Fab work by D3 Performance Engineering; Trans Tune by Keith; Coming Soon: Flex Fuel Conversion. |
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07-25-2014, 10:35 AM
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#8 |
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CamaroFans.com
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I used to do 16 on the track and around 30 on the street, but really only used them for the track.
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07-26-2014, 08:22 AM
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#9 | |
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Going for Plaid
Drives: 2011 C6 Join Date: Jan 2010
Location: Phoenix
Posts: 885
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Quote:
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2014 ZL1, manual trans, carbon hood insert, Rotofab, Pacesetter 1 7/8" headers, 1" drop BMR springs, stock pulleys, 91 octane tune, 545rwhp & 515rwtq
Serviced and modded by Cordes Performance. 2011 C6, 750rwhp, forged LS3, ported LSA heads, Vortech Ti-trim, 227/243 115+4 Lunati cam, ported LS3 intake, Alky Control methanol, Pfadt sways/shocks/trans mounts, Pfadt tri-y headers(Sold 6/28/14) |
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07-26-2014, 09:18 AM
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#10 |
Drives: 2013 TT ZL1 Join Date: Jun 2013
Location: NorCal
Posts: 849
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I've ran a few 10.20 passes on the 20" MT's at 17 psi, I street drive on them at 30 psi, I've went 173.6 mph with them at 22 psi. Like was said earlier the lower the pressure the more floaty they feel.
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07-27-2014, 12:52 PM
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#11 |
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Drives: 2013 ZL1 Join Date: Jun 2013
Location: Austin
Posts: 124
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I'm assuming everybody is generally talking about cold pressure for the numbers noted. When i had em put on, the firestone guy said they needed to be at 32 for the 'load requirement'. I'm probably overdoing it at 32 on the street, but I agree they feel a little wobbly in the back compared to the stock oem.
I couldn't find anything about speed rating anywhere for these tires. Does anybody think there is a risk of failure at the max ZL1 speeds for short distances? |
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07-27-2014, 03:15 PM
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#12 |
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Drives: '21 ZLE A10 Join Date: May 2012
Location: Mechanicsville, VA
Posts: 6,808
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At the track, the tire temp is already up so my pressure listed above is not a cold temp at 17-18psi. The car would have to sit for hours to have a cold pressure, and I drive the drag radials to the track. The street 29-30 psi is a cold pressure.
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'21 ZLE A10 Wild Cherry PDR 2:00.78 VIR Full 10.68@131.69 1.68 60'
'17 ZL1 A10 Mosaic Black PDR/Nav 2:03.08 VIR Full 11.003@129.2 1.75 (sold) '15 Z/28 #325 Black a/c & stereo. 2:10.1 VIR Full (sold) '12 ZL1 A6 Black 10.52@131 1.55 60' 2:13 VIR Full (sold) |
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07-27-2014, 06:26 PM
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#13 |
Drives: 2017 Camaro SS1LE 2000 Trans Am WS6 Join Date: Jul 2008
Location: Portland, TN
Posts: 2,955
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18/30
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2017 Krypton Green SS 1LE
Magnacharged 2000 Trans Am WS6 manual trans 2002 Trans Am 2015 Ram Crew Cab Cummins |
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