Mustang Evolution Forum banner
1 - 15 of 15 Posts

·
Registered
Joined
·
219 Posts
Discussion Starter · #1 · (Edited)
Just got these today. Mickey Thompson ET Street Radial II - 295/45-17 on AM Bullit wheels. The MT website says to run them at 12 PSI and up. They came loaded at nearly 40 so I put them down to 20 to test them out. Its in the 30s here but with some cold test launches they gripped really well.

They are for track use only and I'm running 6MT and 3.31 ratio. Any suggestions for drag race PSI? Thanks!

Car Vehicle Alloy wheel Wheel Tire
 

·
Registered
Joined
·
1,608 Posts
Just got these today. Mickey Thompson ET Street Radial II - 295/45-17 on AM Bullit wheels. The MT website says to run them at 12 PSI and up. They came loaded at nearly 40 so I put them down to 20 to test them out. Its in the 30s here but with some cold test launches they gripped really well.

They are for track use only and I'm running the 3.31 ratio. Any suggestions for race PSI? Thanks!
Wow looks awesome man!! I been looking on Craigslist for a pair to strap on some rear tires..
For road course I lower the psi to 27 cold and it goes up to 35 when hot and run it at that.
 

·
Registered
Joined
·
219 Posts
Discussion Starter · #3 ·
Wow looks awesome man!! I been looking on Craigslist for a pair to strap on some rear tires..
For road course I lower the psi to 27 cold and it goes up to 35 when hot and run it at that.
Thanks! I don't plan on running road course anytime soon although I bet it is fun.
I'm concerned about getting the most traction at the drag strip.
 

·
Registered
Joined
·
3,547 Posts
I know my tires are bigger, 285-35-19, but MT recommends 35 for mine. I got a response from AM saying the same. Maybe if you are really unsure reach out and see what they say.

I cannot in anyway see 20 as being correct PSI!

Also, they are not like true drag tires where you can mess with the PSI and get good traction. Radial tires need to be at their correct PSI so the tire sits flat too the ground. Too high a PSI and the outsides pull up and the contact patch is low. Reverse that and too low a PSI and the inside of the tire doesn't make contact but just the outer edges.

either way you will also wear your tires out faster.
 

·
Registered
Joined
·
219 Posts
Discussion Starter · #5 ·
I know my tires are bigger, 285-35-19, but MT recommends 35 for mine. I got a response from AM saying the same. Maybe if you are really unsure reach out and see what they say.

I cannot in anyway see 20 as being correct PSI!
Yeah I just put them at 20 because I wasn't sure if the website was correct. These are Street/Drag radials though. If I remember correctly drag radials always run pretty low psi.

Any update on your new MT street comps? Mine should be here next week!
 

·
Registered
Joined
·
3,547 Posts
Yeah I just put them at 20 because I wasn't sure if the website was correct. These are Street/Drag radials though. If I remember correctly drag radials always run pretty low psi.

Any update on your new MT street comps? Mine should be here next week!
Ohh I think I misread your post haha my bad, thought you meant the street comps :D.

Yes somewhat, only gotten to drive them in 38 degree weather, but daaaaaamn they stick in this cold weather, cannot wait until the heat of summer.
 

·
Registered
Joined
·
219 Posts
Discussion Starter · #8 ·
I run M/T tires at 13 psi at the track and find that to be the best place for them, just FYI.
Thanks! Do you have the ET Streets or IIs?
 

·
Registered
Joined
·
219 Posts
Discussion Starter · #10 ·
I'll try 13. Thanks.
 

·
Registered
Joined
·
3,745 Posts
This is for the track only. I recommend starting at 18psi and going down from there til you get the launch your looking for. Your sweet spot will probably be between 12-16psi. The tires will perform different everywhere in the country due to altitude, temp and track prep.
 

·
Registered
Joined
·
219 Posts
Discussion Starter · #13 ·
This is for the track only. I recommend starting at 18psi and going down from there til you get the launch your looking for. Your sweet spot will probably be between 12-16psi. The tires will perform different everywhere in the country due to altitude, temp and track prep.
Good info thanks!
 
1 - 15 of 15 Posts
Top