Street radials at the track - Mustang Evolution

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Old 08-13-2013, 06:56 AM   #1
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Street radials at the track

I've got a fairly sticky set of Bridgestone Potenza S-04 street radials on the back of my 2001 Bullitt. Is there any gain to be had at the strip by lowering the tire pressure or doing anything more than a quick chirp to clean them off? My best 60ft is a 2.03 and I'd like to work on that time a little bit. Any suggestions besides drag radials or slicks?
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Old 08-13-2013, 11:07 AM   #2
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For real street tires, the best thing to do is run the tire at it's recommended PSI or slightly more. Lowering the pressure on a street tire will provide a less than optimal contact patch as the car will sit lower on the sidewall causing the center of the tire to fold/lift. Also, lower tire pressure will cause more rolling resistance, lowering your ET and trap speed.

Also, adding more air to the front tires will decrease their rolling resistance.

As for the tires. Some street tires like a little bit of heat, others do not.

You could try chirping them to clean them and then on your next pass, do a burnout until you see a little white smoke. As soon as you see even a hint of smoke stop spinning the tires and try to launch the car the same as you did before. If your car spins more than it did before, then your tires don't like heat. If it bites better off the line then they do.

One more thing, if the track prep sucks at your track, use VHT / PJ1 TrackBite on your tires for great traction off the line.
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Old 08-13-2013, 11:13 AM   #3
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And if your on street tires don't run through the box just do a little spin to get them clean

---------- Post added at 11:13 AM ---------- Previous post was at 11:12 AM ----------

Street tires don't need heat that will hurt traction simple spin to clean them off
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Old 08-13-2013, 11:21 AM   #4
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Get drag radials problem solved
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Old 08-13-2013, 11:23 AM   #5
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As easy as that sounds lol
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Old 08-13-2013, 11:26 AM   #6
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As easy as that sounds lol
I went to the track with stock tires everything I tired still no traction. Iam getting a set of drag radials in a week on cobra rims $330 only ten passes on them. That should put me in the 13s

---------- Post added at 10:26 AM ---------- Previous post was at 10:26 AM ----------

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Old 08-13-2013, 11:30 AM   #7
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Yeah if you're gonna go to the track don't waste your time on street tires.
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Old 08-13-2013, 11:42 AM   #8
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Yeah if you're gonna go to the track don't waste your time on street tires.
I know I learned that the hard way lol
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Old 08-13-2013, 12:35 PM   #9
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If you are having traction issues with a 13-14 second car there are other issues at play. Like lack of track prep, terrible tires, bad driving or some conglomeration of the three.
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Old 08-13-2013, 09:48 PM   #10
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Drag Radials are on the to-do list. Gears and a tuner first. And I've had a total of 9 passes down the strip so I know the driver mod is up there too. Theres another test n tune tomorrow and I'll hopefully get to make 8-10 passes and with the weather being nice I'm hoping for a 13.Xx. I'll try doing a small burnouts just to get some heat and see if that helps.
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Old 08-14-2013, 06:32 AM   #11
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Drag Radials are on the to-do list. Gears and a tuner first. And I've had a total of 9 passes down the strip so I know the driver mod is up there too. Theres another test n tune tomorrow and I'll hopefully get to make 8-10 passes and with the weather being nice I'm hoping for a 13.Xx. I'll try doing a small burnouts just to get some heat and see if that helps.
What track are you running at
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Old 08-14-2013, 07:05 AM   #12
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I run at Indianapolis Raceway Park. I know the track prep is right on. Its all driver skill now. I've got stock 3.27's now and I'm kind of in a middle ground at the top end, trying to figure out whether I should wind it out in third or shift to fourth. I'm crossing the traps at 5800 rpm when shifting at about 5500. There's a test n tune tonight and km going to try a few things.
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Old 08-14-2013, 07:37 AM   #13
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I run at Indianapolis Raceway Park. I know the track prep is right on. Its all driver skill now. I've got stock 3.27's now and I'm kind of in a middle ground at the top end, trying to figure out whether I should wind it out in third or shift to fourth. I'm crossing the traps at 5800 rpm when shifting at about 5500. There's a test n tune tonight and km going to try a few things.
Yeah iam the same way about 3rd gear LOL
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Old 08-14-2013, 07:48 AM   #14
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4.10's will put an end to that probem. They should be on order by the end of the week along with a SCT Tnerwith Bama tunes.
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Old 08-14-2013, 07:50 AM   #15
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4.10's will put an end to that probem. They should be on order by the end of the week along with a SCT Tnerwith Bama tunes.
Yep you iam going 3.73s since iam going forced induction in the spring
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Old 08-14-2013, 01:40 PM   #16
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It took me a while to decide on the 4.10's over 3.73's but this is and will always be naturally aspirated. It's also a toy, not a daily driver. Therefore I'm not worried about mileage, noise, etc... I live 5 mins from IRP and plan to put most of the mileage on there.
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Old 08-16-2013, 04:58 PM   #17
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OK. Went to the track Wednesday and couldn't match that 2.03 60 ft time. I could have bracket raced it at 14.5 (which is too slow to be proud of) but I was all over the place with MPH and 60's. Fed up with it and putting the gears on hold until I get some drag radials. Anybody got a pair of 17X8's near Indy for sale cheap? Lol.
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Old 08-19-2013, 10:57 AM   #18
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Not to be mean, but I would have thought your car as it sits is capable of a 13.5ish. 2.03 isn't terrible for a street tire, but its not ideal. I'd say just roll out like you would at a red light or keep pedaling it to the 60.
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Old 08-20-2013, 09:50 AM   #19
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I thought it would have been worth at least a 13.9. 13.5's are a bit optimistic.
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Old 08-20-2013, 12:04 PM   #20
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OK. Went to the track Wednesday and couldn't match that 2.03 60 ft time. I could have bracket raced it at 14.5 (which is too slow to be proud of) but I was all over the place with MPH and 60's. Fed up with it and putting the gears on hold until I get some drag radials. Anybody got a pair of 17X8's near Indy for sale cheap? Lol.
I have a set of pro stars I want to get rid of, they have 26x 10.5 et streets on them, I'm in nw Indiana so not too far.
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Old 08-20-2013, 12:10 PM   #21
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Here's a pic I can post more if you want.
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Old 08-21-2013, 11:17 AM   #22
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Pm me with price, please. I'm trying to do this on a McBudget.
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