so i recently got a set of 265/40/18 bfg gforce tas and i am going to the track tomorrow. i have never launched on tires this grippy before. when i tried practicing yesterday i dropped the clutch at 4000 rpm from a stop and the only thing burning was my clutch. so i dont think i will be able to burn these out. how should i launch to get the best times on these tires? btw its an 1/8 mile and i usually run about 9.3-9.2 due to low traction. mods are included in sig most of the boltons. thx

-mike

 

18psi or less of air and slip the clutch a bit then punch it once you feel it bite..You want to feel it bite but not bog the car down..Shouldnt get wheel spin or wheel hop..

 

if you want the best possible 60' on those put them at 14psi(they will gain temp during the burnout)

back into the water box and do a quick spin
pull up and do a 2nd gear burnout for about 10-15 seconds
hold the revs about 4500rpms and let the clutch out enough for the car to get moving then dump the clutch very quickly and smoothly.

You should be able to cut low 1.8s like this. This is as hard if not harder on your drivetrain than high rpm launches on slicks.

 

Jackie Chan, do you recommend he powerbrakes in the waterbox or just do a 1st gear to 2nd gear burnout. Im confused. Help

 

Jackie, why is a launch like you described on drag radials harder on your drivetrain than slicks? I'm guessing cuz with the DR's you just drop the clutch and with slicks you slip it a little? Drop clutch=more shock on your tranny/drivetrain...

 

followed your advice and managed to score consisten 2.2-2.3 60 ft times and got a best of a 9.414@78.7. yes i know my car is capable of more but as a comparison this is a slow track at gainesville i ran 9.2 1/8 i usually only get about 9.5-9.6@77 at this track so i am very happy with the results 2mph and .15 is a big improvement in the 1/8. i am gonna rig my brake fuse so i will be able to do "real" burnouts rather than just trying to break them free while moving.

 

You dont do power brakes IN the water box...You just roll through the box to wet the slicks..And you dont go through the box unless your running full slicks!!

 

most 17"+ drag radials have a pretty stiff sidewall and all of the force from the tires hooking transfers into the drivetrain where the slick wrinkles quite a bit and absorbs the hook

 

Back into the water box if you arent running skinnies up front.

Like Daking said dont do burnouts in the box, that will throw water into the wheel wells

do you want me to post a thread about doing burnouts?

 

Please do. I always thought you stay out of the water if you're on street tires. But melissa (on this site) wet her stock tires, burned them up and ran a 13.8.

I've never run street tires at the track, only DRs. So I'd like to hear an answer on this to

btw: what does an 01 5spd gt run? Has intake and flow master catback. My good friends ride

 

You want street tires to be warm....which is why she was hooking. There is NO need to burnout on street tires or get them wet. Just clean them off and get a little heat in them.

My best short times are usually straight off the highway when the tires are still warm.

 

What are your best short times?

 

ok saw my name mentioned a couple of time so i figured id explain what i was doing....

i never hit the water box with stock tires before until now.....i was having problems hooking so i kept experimenting....the reo40 is considered a ultra high performance tire and does benifit by getting them hot ...as a matter of fact if you heat them up good they actually get pretty stickie.....

i hit the box just to make it a little easer to spin them (try not to shock the drive train too much)

i spun out a little just to wet the whol tire came to a stop and then power braked for about 10 seconds

took me from 14.1xx to 13 second times....

just in my experiance with the reo40's
ya heat them up just like a slick

may not work for everyone but definatly shaved 3 tenths off for me

and ive done this every time i went to the track since and had the same results


oh by the way im a guy....
melissa is my wifes name