what tire are you running out back?

 

nevermind. see it in your sig. for some reason I was thinking you were on a drag radial. I was going to say you're running too low of tire pressure but nevermind.

 

I am on a drag radial. MT recommends 12-16 psi for these tires.

 

I run 18 lbs on the 275/60-15. not sure if the 315 is that much different. don't be afraid to try more on a radial. if 13-15 doesnt work for you, try 17.5 psi...if it 60' better keep going up on the pressure 1/2 psi at a time until it slows down again. you want to run the most psi that you can consistently hook.

 

Thank you for changing your sig pic.

 

Nice runs. Like mentioned above a better sixty should net you 10s!

 

Baby steps... youre getting it dialed in one step at a time. Its nice to see it improving with each pass.

 

Yeah, the 275s and 315s are in different classes as far as tire pressures go, per MT. When I dead hooked on the 11.1 run I had 15 psi in the tires. Most posts I've come across from people running this tire, they run between 15-16 psi. However, those are in small, light cars. I'm near 5000 lbs so a little less tire pressure may be needed.

 

i had 30 psi in the M&Hs on my 1.69 60ft. thats a non boost lauch though. I tried to leave harder but they spun also.