Your Best ET & 60 ft. on Street Tires (not Drag Radials)
 

I'm curious to hear what ETs and 60 ft. times you've gotten on street tires (not drag radials).

Let's try this format:
1. Tire Brand, Model & Size
2. 60 ft.
3. E.T.
4. RWHP at time of run
5. Method of launch (burnout?)

See sig.

I'll never run street tires with a single turbo but on my last car with the twins I ran 12.8@112 and I think the best I could manage was just under a 2.2 slipping the clutch. Kumho supras 245/45/16 22 tire pressure and I'm not sure how much rwhp but it wasnt that much. 300rw give or take 20

with the nitto drs I use now I know I could get a 1.7 easily and 1.6 if I ran 5-6 times. I got a 1.8 last time taking it easy not to break anything.

245/45/16 kumo supras at about 25psi
2.1 60'
13.5@105
dont know the rwhp(second turbo not coming online)
no burnout just pulled up to the line

Bad idea period. It's a good way to destroy your diff. If you can't afford some spare rims and drag tires you most certainly cannot afford a new differential.

Kevin T. Wyum

To whom were you speaking, Kevin? I have a TurboII Diff. in my car with 4.33 gears. I've spent a lot on the car over the last few months, so I didn't want to get tires right now. I just wanted to get a feel for what is a good time with street tires.

BTW:

I'm running:
1. Goodyear Eagle F1 GS-D3 275/35-18 on heavy 9.5" Enkei Aegis wheels
2. Don't know yet
3. Don't know yet
4. ~360 rwhp at 13 psi and ~410 rwhp at 16 psi

I suggest not even wasting your time going out there with street tires youll probably hop and surely spin till 3d gear. You can cut off half sec with a nice launch. Just borrow someones for a couple runs drs are good for a shitload of passes I have 11k miles on mine

the gainesville raceway is a really nice track too where were you thinking of going? I wanna see what that beast can do

The Tampa Racing Track Day at Bradenton is next Saturday from 5-10 PM. I'll probably end up getting the Nitto DRs in 285/35-18 and put them on my blingin' 18s. It's not the best setup, but it will better than street tires, and I won't have to take the wheels on and off and store them somewhere.

1. Pirelli P7000 Supersports (Allseason), 245/45X16 -- 32PSI
2. 2.1 sec
3. 13.8 sec
4. 275 RWHP
5. No burnout... dropped the clutch at 4000 RPMs

i pulled 2.1's on some shitty 245/50/16 yokohoma s306's when i was still twin

i dunno about everyone else, but i only get wheelhop when i use drag radials. the g-force t/a's i have on my stock wheels and my 285 wide falkens on my 18's don't hop at all, but as soon as the nitto 555r's get put on, it's back to wheelhop heaven

you may not be heating them up long enough
last time I got to the line after my burnout and had to move up for the last light the car almost stalled cause I was stuck to the pavement haha

also I revved up to 5k and had it right where it was about to engage and did a slow drop of the clutch while getting into the gas slowly at the same time. I cant see how people just drop the clutch. it cant be safe and I know it causes wheel hop

i can't heat them up at the track. anytime i try to brake torque the car, it hops violently. even when just doing a quick clutch drop to clean the tires off, it hops like crazy. i've already broken an axle trying to do a burnout. my street tires don't do that

stock rear end sucks.

maybe you have something wrong with your suspension then or it needs to be adjusted. I have a low mile 94 with stock suspension and after I back up into the waterbox and come out a couple feet I rev to 7000 and drop the clutch and hold the brakes. Ive sat there for 15 seconds burning out with no problems. Honestly if you are getting wheel hop like I used to you need to rev higher when you launch. the lower rpm slipping of the clutch causes vibration somehow. You have to get the clutch to engage pretty fast and have it at a high rpm. Man I wish I could go back to the track I'd go for 1.6 on the drs. They really give you shit here when you get into 11s. maybe for some riced out pos thats dangerous but thats nothing for our cars its totally stable

245/50/16 Sonar's....I don't know who makes this tire but they were cheap.
Tire preasure at 25psi
Small burnout
Launching!!! it @ 5.5k-6k
2.0 60'
12.6 @ 111mph

13.8 @ 101.6 on the tires it roled out the show room. all i got is dp an greddy sp exaust

oh and 2.1 60ft time

that's the problem, i can't get in the waterbox at my track. i'm stuck trying to do it on melted rubber and traction compound. i just do a slight rolling burnout and get 1.6's on my nitto dr's tho

245 toyo t1-s

2.0
12.2
116mph
340rwhp
dumping the clutch at 3800-4000. no wheelhop..just spin.

225 firehawks, no burnout, launched at 2200-2500rpms, intake downpipe exhaust, 1.964 60ft,

RWHP? dont know. i trap 109mph (1/4) and 89-92 depending on launch(1/8th)

Toyo T1-s on 18in rims :

2.014
12.5
116mph
380rwhp
slipping then dumping the clutch at 4500. no wheelhop..just spin.

ET Streets on stock rims:

1.77
11.8
116mph
380RWHP
1 spin over in H2O box, 3-4 sec burnout out of H20 box, then slipping very slightly and dumping the clutch at 5500.

are u sure u are making that much power?
i trap 116mph and i only make 340rwhp/

Base Mustang Dyno and Dyno-jet #s, no correction on different dynos.

The 116 on the Toyos/18s was probably pretty accurate considering the spinning of the tires pretty good on launch, spinning slightly @ 1st/2nd shift, and chirping the 2nd/3rd shift on a non-prepped track.

The 116 on ET streets (1st time ever) was a product of the hooking of the slicks and the subsequent (tire induced) float down the track destracting me into shifting late (8000-8300 RPMs) on 1st, 2nd, and 3rd. That shit was scarey. Also, my freaking shift knob stripped, on the 1st run of the day, and I could not quick/power-shift.

I actually was running 13.2 @ 114 with 330 RWHP sequentially BEFORE the race-port and ported non-sequentials.

with 379rwhp SAE corrected I trapped 121
You are closer to 340rwhp as mentioned

I'll beg to differ. Different tracks, different tires, different circumstances. I had been expecting to see AT LEAST 118 traps. But, I do see your point relating to the traps speed.

It was even a cold 55 degree dry nite with a freshly prepped track on the 11.8 pass. We had a private track night, at a back-woods county track, and had more than a few people comment on what seemed to be low trap speeds. Why? I don't know. Can you explain a documented 50 WHP increase (ported engine, ported twins, and 2 psi) producing only a 2 mph difference in trap speed? I can't.

Unfortunately I broke my diff. and mounts several passes later and won't be able to get to another track day this year.

Nocab72 and Badog have both tangled with my car this summer. Maybe one will chime in and give thier opinion of the RWHP I'm closer to.

interesting...my traps are always very consistent with the dyno #s the car put down and I can get within .2mph of my previous trap every run at our track! trap speeds are very indicative of the cars power even with a moron driving as everyone knows. this local kid here in a 525rwhp supra still trapped 126 while getting a 13.8 LOL

for example my car on the last setup put down 379rw with a trap of 121 and on this turbo I ran boost that would yield about 390rwhp and trapped 122
I've seen a car with ~420rwhp trap 125 and and another with 353 trap 118
I agree that tires and the track make a big difference as well as temperature

I'd like to hear more about your car so we can see what is going on. How did you break those parts? Explain....I could always use some advise

1. Kumho Ecsta 711 245/45/16
2. 2.0 60ft not bad for a $50 tire.
3. 12.9 @114
4. 336 rwhp
5. Clutch slip method from about 3k.

Couple of recent runs for you guys. Usually I can cut about a 2 on streets. But these runs where learning to use the launch control on my racelogic, not doing to great as you can see. My clutch engagement is going so It wasn't working to well. Tires 275 KDW's

Running a weeny TD06-20g turbo @ 12lbs, water injected, 11.5 afr, not to shabby I suppose.

I've trapped 118mph long time ago on non-seq @ 18lbs on 285x17 firehawks, the day after dynoing 380hp so im probably close to that range.

Hey are you the guy with the cym that came with carlos to the gainesville raceway last year about this time? dean I think you said??

Surgemonster
 

That was probably me, those runs where in Nov 2003. Haven't been to the track since then, spent most of the year fighting with my wastegate trying to get more than 12lbs of boost. Actually hope to get back out to G ville next month again before they close down for the year. I've driven Carlos's car almost as much as he has, I rotate the tires for him every few months so it won't be all screwed up from sitting...he's in the gulf bossing around a bunch of young rotor heads(chopper pilots) When I get pulled over I always till the cops it most be that other guy in the yellow car...we like to use the same roads to test on :-) I look forward to his safe/speedy return. If you get up this way shoot me a message.

225/50/16 Yoko AVS Sport
32psi
13.4@105
2.1 60ft
no burnout, 3500rpm launch

rwhp?, stock with dp, mp, pfs catback, profec b

i noticed some awesome numbers coming out of thr rx7 stores dyno...perhaps there is soemthing wrong there. 116mph traps is not 380. I think dynos can lie....both intentionally and unintentionally. Fact of the matter is that mph in 1/4 cant lie. I think its interesting to note that alot of cars coming out of the rx7store are dynoing with better numbers then the norm.

Intentionally used different dynos for just that reasoning. Was dyno'd on a Dyno Jet, and then the next day under almost identical humidity and temps, on the Mustang Dyno. The Mustang Dyno was recalibrated, using the supplied weight and instructions, and also reset to have no "correction" factor, the numbers came out within 1 RWHP. This also happened to be the lowest # the Mustang Dyno would produce.

Unfortunately my car is down and will not have a chance to run it again, on a NHRA track (National Trail or Norwalk) versus the Marion County Raceway, this year.

interesting.

Oh, and the 12.5 @ 116 on street tires was at National Trail Raceway on a 80 degree day in late early Sept, the other was on a 55 degree night at Marion County in October.

As said before, we had a lot of comments about low trap speeds at Marion. Everyone who was racing that night had been to the NHRA tracks this summer.

225/40/16 Yoko AVS Sport, i believe
13.475@102.5
1.99 60ft
no burnout, 3500-4200rpm launch

first pass ever by the way

oh and mods intake, dp

gargamel is that really your car in the sig? I saw the movie with that car and the Mr2 in the back round in it. Nice movie, and nice car

how did you shift? did you lift throttle? did you even use the clutch? what mods on your car? that's a pretty amazing 60' (to me) depending on what mods you have....

its not amazing...itsd a good run. ALot of guys can manage lower with basicllly a stock car.

that's why I said "to me" since my best is significantly worse...

well after getting off the line, i kinda just went, wasnt really thinking. i shifted around 7500. mods are downpipe and intake. ive gotten pretty comfortable with the car so i guess it was just a good run

Rotarded = Mike... right?

Next time you guys head out to Marion or National Trails... let me know.

I go up to Marion all the time and have never seen any 7s up there.

LET ME KNOW...

Will Thornton
williamthornton@residentialfinance.com

have you ever gotten your car dynoed? When you shifted, do you recall lifting off the throttle?

I have similar mods, but only managed at best a 2.1 60' and a 13.8 1/4 mile....

nope never had it dynoed. i lifted off the throttle when i shifted, i thats what you mean. ive done it a lot, so i can shift pretty fast i guess. i was suprised it ran that quick also. i was expecting a 13.7 maybe. during the run i just did what came natural i guess. it went by so fast i dont remember what exactly i did

what mods do you have?

1.999 60ft
205/55 16's pirelli 6000's
12.735@112

this is at 3000ft and 100 degrees
est 275rwhp

11.80 @ 121 w/ 1.91 60ft

its a camaro though

2.01 60 ft
12.7@114.7 mph
seq twins stock motor
275/35/18 ToyoT1s

check out this site,

http://www.dragtimes.com/Mazda--RX-7-Drag-Racing.html

I ran a 12.07 @ 117.37 mph with a 1.922 60-ft on stock twims and street tires

At that time I had 285hp at the fly at 12psi.
3 years old 225/50/16 Dunlop Sp9000 tyres, 18psi.
Dropped clutch at 3k RPM, no wheelhop, just spin.

13.4 at 106mph on street tarmac, no burnout.