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Dragstrip and Launch Techniques Discussion 1/4 mile, 1/8 mile, launch discussions.

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Old 04-26-2012, 10:18 AM   #1
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Thanks.
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Old 04-26-2012, 12:20 PM   #2
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18-20 pounds . Play around between there for best 60 ft
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Old 04-26-2012, 10:22 PM   #3
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I have been running 17 psi at the track for 3 years now, I like them, I run 10's with them...
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Old 04-26-2012, 10:46 PM   #4
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Is this warm temp pressure or cold?
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Old 04-27-2012, 06:03 AM   #5
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Will the 305's fit on a 10" rim?


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Old 04-27-2012, 06:22 PM   #6
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Quote:
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Will the 305's fit on a 10" rim?


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Yes, 305s are a perfect fit on a 10" rim.
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Old 04-27-2012, 07:41 PM   #7
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The 305 drove fine and fit fine on stock rims , They are a little heavy and if I didnt go to a 18" rim I would stay with the 275 . They stick fine at the track just heat them up good .
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Old 04-30-2012, 01:08 AM   #8
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I stayed safe and went 275 to match stock and keep weight down.
Caught a deal on a second set of back stockers- so I can keep the original wheel/tread looking good for shows.

These are my secondary/lesser wheel set up-only for True Street runs not Daily driver- which is by 1 sec increments. Just needed something not shy of water box and a little more grip-was on the mark before. Not 'powered up' yet(counting the months down)-don't need a wider tire for now. Will ditch these later for 325m&h DOT/17"Bogart to match my current track only set.
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Yes, 305s are a perfect fit on a 10" rim.
Quote:
Originally Posted by bad55nomad View Post
The 305 drove fine and fit fine on stock rims , They are a little heavy and if I didnt go to a 18" rim I would stay with the 275 . They stick fine at the track just heat them up good .
Thanks for the info guys. I was thinking of sending my rears out to get widened, if they fit without it, I'll keep the $300 and put it to use elsewhere.
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Old 08-30-2013, 08:40 AM   #9
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bumping this thread as opposed to starting a new one....

so correct me if im wrong, 32 psi or so for the street (mainly so it doesnt piss off the tpms lol) and about 18 psi at the track. now that 18 psi is gonna be the hot pressure from driving to the track, is that taken into consideration?
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Old 08-30-2013, 09:53 AM   #10
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That's right, I've been doing that for years on stock wheels and many 10 sec passes
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Old 08-30-2013, 10:57 AM   #11
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perfect! thanks!
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Old 08-30-2013, 01:53 PM   #12
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I run between 20-23 pounds of pressure. Nothing lower than that makes me 60 foot any better. It slows down my MPH if I go too low.
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Old 08-30-2013, 02:56 PM   #13
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Well I'm full bolt on (aside from a throttle body) and its an L99.
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Old 08-30-2013, 03:08 PM   #14
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I've tried between 18 and 25 cold. The worse the track, the lower I got in air pressure. I ran them at 30 psi at Norwalk last year at the LPE event, that track was hooking bigtime.
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Old 08-30-2013, 03:27 PM   #15
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I run mine between 18-18.5
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Old 08-30-2013, 03:49 PM   #16
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16 psi is the sweet spot for 555r's. 1.5's 60's all day long. They require a 5 second+ burnout out.
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Old 08-30-2013, 04:01 PM   #17
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Seems like a lot of people run a lot of different pressures. Guess ill start high and work my way down.

I also hear they require a good amount of heat.
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Old 08-30-2013, 04:10 PM   #18
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I do about a 5 sec burnout, that it.... always in the 1.5 60's at 18 psi
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Old 08-30-2013, 04:29 PM   #19
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Oh of course. I was really just looking for a ballpark figure and go from there.
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Old 09-01-2013, 09:09 PM   #20
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I run my pressure at 16 every time. 1.56 60ft with just bolt ons.
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