Negative's of dropping you tire pressure?

[bluek7]

Sorry guys if this is a really newbie question, but up here in Northern michigan its starting to cool off a lot and most of the events at the local track by me are in the afternoon/night, where it has been getting to the high 60's low 70's. I have been running around 15-18psi in the rear and it hasnt been hooking very well. if i go lower than that maybe around 10psi while im at the track does running that low hurt my mph or time at the track?

[nappinj12]

yes to both et and mph, but so does spinning tire. lower till you get traction. try different tire or how much you heat it up.

[bluek7]

ok, thanks for the fast response. i guess ill stick aroun 15 and try heating it up more

[Pruitt'sBusa]

IMO... I would try 10psi.

[wikidkz]

What tire are you using???

[Redline]

What bike, hp, and length is the wb?

[bluek7]

Its an 07 GSXR 600, wb is right at 62", lowered 2 1/2" front and back, not sure the hp but its -2+2, bmc filter and jardine pipe. It didnt break lose completely last time i was there (keep in mind it was only about 58 degreese) but it just didnt grab until about 200 feet to go (1/8th mile track) i think next time if its that cold ill try to heat it up a lot more and see where that takes me. bc there isnt anyway my bike shold have the power to do that and if it was breaking lose completly i could blame it on myself.. im gonna go back sunday and see how it is, hopefully its warmer

[bluek7]

and have a shinko stealth for tires, sorry

[BATTMAN]

There's no way I would lower the tire pressure that much on a 600. If it doesnt hook at 14-15psi, then adjust your launch technique.

[Redline]

If you are convience you have a good hooking tire, suspension is the next place to look. You can have the best tire out and still not hook if your suspension itn't right.

[maverick720]

I cut consistent 1.4 60s at 60'' on my 600RR with a shinko hook-up @ 25 psi. Adjust suspension and get that tire hot.

[shorttrack]

adjust your suspension.tighten up your rebound,loosen up your spring,soften up compression(some of these or all of these can be applied) & adjust your launch &do a longer burn out.do not get water on your front tire because your rear tire will spin right through it when launch.drive around the water box & then back your rear tire into it.spin it just to get a little wet ,pull up some then do your burn out,stage in the groove (good laid down rubber or traction compound,& try to stay in it during your run).leave with a little less RPM's while slipping your clutch out a little more.trial & error.you will get it.pratice.get somebody at your home track that understands suspension dynamics to help you out.

[shorttrack]

I cut consistent 1.4 60s at 60'' on my 600RR with a shinko hook-up @ 25 psi. Adjust suspension and get that tire hot.

that is a dam good 60' #.

[maverick720]

For a 600 anyways.

[slo poke]

Like the rest of the guys have stated start with the suspension and work on your launch I run a the same tire at 20psi on my busa and its 68'' and my bike hooks but as mentioned those two pieces of the puzzle when perfected will get you right ******* can second that statement about my bike he knows me however I have tried the hookup but I have a street bike so that didn't. Pan out to good eat the tire up fast so never tried that again