ET streets tire preasure
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MBWorld Fanatic!
Joined: Apr 2009
Posts: 1,582
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From: Lafayette, IN
2008 ML63 2009 SL63 2010 Alpha 7 GTR
ET streets tire preasure
What have you guys found to be the best tire pressure for the Mickey Thompson ET streets? Size is 255-50-16. Thanks guys!
Junior Member
Joined: Jan 2005
Posts: 37
Likes: 1
From: South Bay, CA
E63
I have used MT streets on my Z. I shoot for 8-12 psi of air. This gives me pretty consistent low 1.5 60' on that car. But it also makes a lot more power. I'd say try around 15psi and launch as hard as you can. On the top end it will feel like the rear end is walking a little bit but you get used to it.
MBWorld Fanatic!
Joined: Jun 2006
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'03 E55, Range Rover Sport Supercharged, Ducati 748R
imho, these cars weigh too much to maintain a proper contact patch at that low of a psi and the high speed wabble is not worth it. most 55's are not capable of out performing the tire at higher psi's anyways...
Last edited by chiromikey; Sep 9, 2011 at 06:47 PM.
Junior Member
Joined: Jan 2005
Posts: 37
Likes: 1
From: South Bay, CA
E63
You have to remember that the pressure comes up a few psi after you warm up the tires. So there's some room there. The weight difference between my AMG and the Z is about 500lb.
MBWorld Fanatic!
Joined: Jun 2006
Posts: 6,649
Likes: 207
'03 E55, Range Rover Sport Supercharged, Ducati 748R
yes, the psi will raise with heat but not more than a few psi for the launch. i just don't see a reason to go that low if the car can't out perform the tires at a more stable psi. i'm not sure what kind of z you're referring to but 500lbs is a lot imho.
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PLATINUM SPONSOR
Joined: Jun 2008
Posts: 3,834
Likes: 65
From: Texas
2003 CL55
23psi but have gone as low as 19, if track prep is weak.
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E63 Biturbo, UPD Cold Air induction kit, UPD performance crank pulley and UPD adjustable rear suspension with ride height adjustment.
CL55 UPD Cold Air Boost kit, UPD 3000 stall converter, UPD 77mm SC clutched pulley and beltwrap kit, Custom long tubes, UPD crank pulley , UPD suspension kit, UPD SC pulley, Aux. HE, Trunk tank w/rule 2000 pump, Mezeire pump, UPD 5pc idler set, Aluminum rotor hats.
www.ultimatepd.com
instagram @ultimate_pd
facebook.com/ultimatepd
