I just switched from a 275/60/15 bfg drag radial to a 28x13.5x15 MT E/T street and went from a 1.701 60' to a 1.889. Can anyone clue me into why i droped almost 2 tenths in my 60 foot?

 

To much tire maybe?

 

I would say that you need some t&t time to learn the tires. I run 26-10.50x16 ET streets and pull consistant 1.70 60s in the summer heat. 16 psi cold, pretty hard burn out especially the first one for the day.

But then Drew could be right. You went to a 28" tall tire which reduces your effective gear ratio at launch. Just spray it out of the hole

 

the drag radials were 28inch tires also. I did notice that the rim spun about 8-10 inches inside of the driver tire and about 2-3 inches inside the passanger tire.

 

The rim spun? Try some rim screws. That could certainly be a problem. Also, you want the highest amount of air that doesn't allow the tire to spin. Were there any unusual environmental conditions? At your power level I would normally be suggesting a 26" tire.

 

I would run a 26 inch tire if i wasn't already going through the traps at 5400rpm on motor in 3rd gear on a 3 speed trans. On the gun i am tapin the revlimiter right before the traps.

 

BFG'S suck! Ive never had problems with traction with mickey thompsons. Just make sure you do a good burnout and drive the car out of the box.

 

BFG's suck...puh-leez....cut many 1.6 60's...new combo should cut 1.5's with them....

 

How do the ET Streets compare to the BFGs in terms of driving on the street? I am trying to find a good tire that I can throw on my 15" bogarts permanently and drive on daily and on the track. I want something that will handle OK and get me into the 10s on the track. Was thinking about the BFG 315/60r15s or the 28/10.5/15 ET Streets or maybe the QTP Hoosiers. I heard the right set of BFG DRs can get you into the 9s... They put a Supra into the 8s. Any advice?

 

i loved my bfg's for daily driving, no problems with them, not even in the rain. I know there are 8 second mustangs on drag radials.

 

You want to talk about reducing the effective gear ratio, I am running 28" tall tires w/ 2.73s. (times in sig on street tires) I think they may actually help though b/c I shift into 3rd right before the finish and without them it is more like 50' or so.

 

If you spray out of the hole and everything works right you should be running high 1.4 60 ff times.

No way BFG's work better.

Either you bogged (on motor) or something was not right.

I would not run those slicks below 15 psi cold you don't need to with the power you have.

I went 1.48-1.60 at US41 all day long on 28x10.5x15 Hoosier slicks, 15psi cold, fron hals at 2/2, and rears at 3/4.

 

i will be out at 41 on suday trying to get the 60' back to normal.

 

www.mfba.org has our annual shootout at US41 tomorrow c heck out the events section on the message board.

If the weather is good I'll be spectatin' and I'd be glad to spot your car and let you know how it works off the line.

Here is me last year:
http://www.pbase.com/image/5269912

 

if it was later in the day i could make it out there, but i have to help the parents move sat morrning. do you guys have a rain date set incase it rains tomorrow?