[5.0Mustang1989]

I just got a pair of Mickey Thompson Street Radials. They are at 32 psi right now, but I was wondering A) what is a good pressure for driving on the street, and B) what is a good pressure for at the track?
Thanks

[jsusisaliv]

I seen a thread a while back about the pressure on MT drag radials but unsure how to find it again on here. I do know they said to do a small burn out and if the edges are darker to increase air and if the center is real dark and the outer edges are light to decraease the air. YOu want a real even dark spot showing that you have all the tire touching even. I have not yet had a chance to try it since my car is not ready yet

[5.0Mustang1989]

Yeah, I saw that, but I really want to know about street pressure. I know I'm going to want more pressure on the street, but not really how much or how to figure it out.

[95gts silver/bl]

if you not worried about someone getting you at a light who has lower air pressure and who has did burnouts like the other guy said make sure you getting a good foot print thats you we get dr imo but for better gas millage and firmer ride keep it at 32-35 and during race drop to around 25-28 but i have nitto

[jahousafat]

Dang, I just typed you up a nice long reply but when I hit submit, I somehow got logged out and lost the post.

Anyways..... a burn out is a terrible way to judge tire pressure. If you've ever watched a topfuel dragster do a burnout, then you should know that a tire looses its shape during said burnout, and becomes more oblonged and oval-shaped. Ford paid their R&D teams millions of dollars to figure out the correct wheel/tire sizes, internal volume of wheel/tire, weight of vehicle, suspension set up, and appropriate tire pressure to work perfectly with all of the above to ensure an even contact patch of the tire to the ground. If you overinflate your tires, you'll ride on the center of the tread. Underinflate and you wear out the shoulders of the tire. If you're still running the stock sizes, open your drivers door and read the pressure off of the door plackard. The pressure given should be ideal for every day driving, giving you a perfect contact patch. Track and aggressive driving pressure can be anywhere from 3-8 PSI less than stock. If you live near a Costco or any other tire dealer that is running a Nitrogen set up, stop in and ask them to drain your tires and fill them with Nitrogen. It's a dry gas that's not affected by temperature, so you'll never have to worry about cold vs. hot pressure again.

Hope that helps. Sorry for calling your burnout idea silly, but come on..... how is a burnout going to help you find the correct pressure for your front tires?

[Sliepnir16]

I ran bf goodrich g-force t/a drag 2s with 13 pounds, and it hooked up good at the track. I think those Mickeys are better so you might not have to let as much air out but im not sure. My guess is since they are new, anything over 20lbs with a strong launch and youll probably spin. I was taught the best time for the drag radials is when the sidewalls start to wear a bit. On the street it should be around 30-35, just so you dont have a wobble or anything like that. Plus mickeys wear faster than any other tire so your gonna want to keep them pumped on the street, like a regular tire pretty much.