Drag radial tire pressure - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

11syn3rgy · 10-13-2014, 04:17 PM

Hey guys,

What the best (lowest) tire pressure I should be running on my 305/45R18 MT ET Street II's? I haven't gone below 20 (hot) for fear of spinning the rim or hurting something but I'd like some advice. What are you guys seeing as the optimal psi at the track?

Thanks!

Mikes fast ss · 10-13-2014, 04:19 PM

18. You shouldn't need to go any lower that that.

11syn3rgy · 10-13-2014, 05:17 PM

Quote:

Originally Posted by Mikes fast ss

18. You shouldn't need to go any lower that that.

Ok, thanks! I've never been below 20 and wanted some advice.

jbrown13 · 10-13-2014, 06:30 PM

I run mine at 17.5 psi hot. They do not spin on the wheel based on chalk marks I used to check.

2013 ZL1 #7860 · 10-13-2014, 07:13 PM

I have had mine down to 15 psi and didn't have any issues. Mickey Thompson recommends 18 sot that is what I shoot for.

11syn3rgy · 10-13-2014, 07:16 PM

Cool, thanks guys! Sounds like I'm trying 18 this Saturday. I'm only a tenth away from getting into the 10's, so I'm trying to think of anything that I can.

Merc · 10-13-2014, 07:39 PM

Quote:

Originally Posted by jbrown13

I run mine at 17.5 psi hot. They do not spin on the wheel based on chalk marks I used to check.

When do you set them hot?

jbrown13 · 10-13-2014, 08:59 PM

Quote:

Originally Posted by Merc

When do you set them hot?

Hot may be an exaggeration. I drive my car to the track and immediately set the rears to 17.5 for my first pass. Immediately after my first pass, and each subsequent pass, I put the gage on them and adjust to 17.5 psi if required. Warm might be a better word.

jbrown13 · 10-13-2014, 09:06 PM

Quote:

Originally Posted by 2013 ZL1 #7860

I have had mine down to 15 psi and didn't have any issues. Mickey Thompson recommends 18 sot that is what I shoot for.

Actually, MT recommends different pressures for different sizes, etc. Their Tech Bulletin on recommended pressures is here: http://www.mickeythompsontires.com/tech.php?bulletin=s3

Pro Stock John · 10-14-2014, 10:01 AM

Syn post a slip what is your best 60?

11syn3rgy · 10-14-2014, 02:31 PM

Quote:

Originally Posted by Pro Stock John

Syn post a slip what is your best 60?

Here ya go. This is my best 60' and ET. I'm in the left lane

62nalide · 10-14-2014, 10:17 PM

22lbs is my sweet spot lol

thundercat 1 · 10-15-2014, 07:53 PM

ran 14 in my m&h 1.52 60 ft

Mikes fast ss · 10-15-2014, 08:20 PM

Quote:

Originally Posted by 11syn3rgy

Here ya go. This is my best 60' and ET. I'm in the left lane

With about 550 rwhp and the stock converter you're not going to 60' much better than than. 1.60 is pretty damn good so you're not far off. Get yourself a stall.

10-13-2014, 04:17 PM	#1
11syn3rgy JT Synergy RS/2SS Drives: 2011 Camaro RS/2SS (L99) Synergy Join Date: May 2013 Location: Hager City, WI Posts: 697	Drag radial tire pressure Hey guys, What the best (lowest) tire pressure I should be running on my 305/45R18 MT ET Street II's? I haven't gone below 20 (hot) for fear of spinning the rim or hurting something but I'd like some advice. What are you guys seeing as the optimal psi at the track? Thanks!

10-13-2014, 04:19 PM	#2
Mikes fast ss Slowhawk Built Drives: 2010 Supercharged SS Join Date: Apr 2014 Location: CT Posts: 819	18. You shouldn't need to go any lower that that. __________________ *9.21 @ 149 Slowhawk Performance*

10-14-2014, 10:01 AM	#10
Pro Stock John Writer Drives: 2010 SS / 1967 Camaro Join Date: May 2009 Location: Chicago, IL Posts: 7,216	Syn post a slip what is your best 60? __________________ PROJECT HEAVY CHEVY Camaro Now: Mods for the Masses Part I \| Part II 13.15@106 1.95 \| 100% Stock 12.37@112 1.85 \| + Kooks Headers/Cats + 20" 555R + CAI + BW TB + UDP + Tune 12.06@113 1.70 \| + CD 3200 + 18" NT05R + RCR Intake + NE OTR + GPI Tune 11.84@115 1.59 \| + 3.91s + Race Star 17x7 Fronts 10.90@125 1.47 \| + GPI VVT Cam + BW Ported Heads + CD 3800

10-14-2014, 10:17 PM	#12
62nalide Drives: 2013 SS Join Date: May 2013 Location: DFW Posts: 4,102	22lbs is my sweet spot lol __________________ https://frankensteined.net/ Martin@Frankensteined.net

10-13-2014, 06:30 PM	#4
jbrown13 Drives: 2011 Camaro SS L99 Join Date: Jan 2012 Location: Perry, GA Posts: 553	I run mine at 17.5 psi hot. They do not spin on the wheel based on chalk marks I used to check.

10-13-2014, 07:13 PM	#5
2013 ZL1 #7860 Drives: 2013 ZL1 A6 #7860 Join Date: Apr 2014 Location: CO, USA Posts: 1,279	I have had mine down to 15 psi and didn't have any issues. Mickey Thompson recommends 18 sot that is what I shoot for.

10-13-2014, 07:16 PM	#6
11syn3rgy JT Synergy RS/2SS Drives: 2011 Camaro RS/2SS (L99) Synergy Join Date: May 2013 Location: Hager City, WI Posts: 697	Cool, thanks guys! Sounds like I'm trying 18 this Saturday. I'm only a tenth away from getting into the 10's, so I'm trying to think of anything that I can.

10-15-2014, 07:53 PM	#13
thundercat 1 Drives: 2010 camaro ss/rs Join Date: Jul 2011 Location: pa Posts: 88	ran 14 in my m&h 1.52 60 ft