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Buell Motorcycle Forum » Buell RACING & More » Racing - Circuit/Road Racing » Archive through March 04, 2009 » Best street tires for the track on a 25R « Previous Next »

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Painkiller
Posted on Thursday, February 19, 2009 - 03:43 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Not sure what to believe because I have heard the stock rubbers are good on the track and that they suck for the track. I dont want to put slicks on for just one day and have to worry about buying warmers and the like so I need some sage like wisdom.
Streets of Willow in April/May if that helps too.


Thanks ahead of time,
Joe
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Eboos
Posted on Thursday, February 19, 2009 - 06:41 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Stock tires will be just fine. The DCIII's are the best all around tire that I have ever used. They are less temperature sensitive then race tires, and handle wet conditions much better then race DOT tires. Unless you plan to race, or are a fast trackday rider in the advanced group, stick with the Diablo Corsa IIIs.

Only consider race DOTs if you are willing to use warmers before and between sessions and will take them off before going back on the street. Don't even consider slicks unless you are an Expert racer putting down seriously fast lap times. Otherwise you will just waste money without any benefit.
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Slaughter
Posted on Thursday, February 19, 2009 - 09:45 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I have run the stock Diablo Corsa III's on the 1125R on the streets for Inside Pass last year. This is a track day for you so there's no really good reason to spend money on softer compound tires - and lose the opportunity to LEARN your bike's handling characteristics. I'd recommend staying with the tires you always ride with on the street so that you can really work on setting up the bike's handling.

On the streets, you can't really get out of 4th gear except toward the end of the front straight for a second.

Stay with the Diablo Corsa III - they warm up really well in 3 laps and handle really well - assuming that's what you're using already.
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Slaughter
Posted on Thursday, February 19, 2009 - 09:49 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Are you going to be in the TrackDaz Acadamy that day? Dustin and company REALLY know bike setup and technique - USE them and ask LOADS of questions of the staff riders. They're really helpful folks... tell 'em Slaughter said so
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Duggram
Posted on Thursday, February 19, 2009 - 10:19 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

You might want to remember to roll on the throttle slowly coming out of turns, especially slow turns. The 1125 can spin those DC3's pretty easy. When I was on DC3's I got on it too hard coming out of a slow turn and sure enough, I low sided. That's the only gotcha I know of.

Have fun!
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Slaughter
Posted on Thursday, February 19, 2009 - 10:26 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Doug is ABSOLUTELY correct... DCIII are 75% street, 25% track usage and in order to have ANY life, they are not as soft as racing tires - but a race tire is used UP in a day at the track.

Use the "right wrist" traction control.

Preview the course (there are a few videos and maps available) and you can gain confidence going around the skidpad (though it's a little bumpy at the exit)
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Blublak
Posted on Thursday, February 19, 2009 - 11:27 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

DC III's are fine.. as stated above several times. I get multiple track days out of a set while still riding on the street with them. A lot of the 'Coaches' (Control riders whatever you call them) that ride with TPM use them since they work well in all three groups allowing them to forego warmers and spend time with students then still be able to run with the advanced group at near race speeds. I think one of the coaches who's helped me a bunch said something about getting at least 6 full track days out of a set (and that's riding in at least two groups all day)..

They are sensitive to pressure settings, so be sure to set them properly in the morning. A lot of folks use something akin to 32 - 34 front and 34 - 36 rear (cold). I think you can even drop the rear a little more to get more cool tire grip. In my experience you can usually count on the first lap taken easily to warm them up. Remember, no warmers means after sitting a while, they need to get warm again. So unless you really destroy tires anyway, they should last you a full day and still have plenty left for street use.
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Slaughter
Posted on Thursday, February 19, 2009 - 12:52 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Get the recommended pressures from the crew at the track the day you are there.

For Streets of Willow, mild temperatures, they were setting about 31psi cold on front and rear.

You really CAN do well by measuring your pressures as soon as possible when coming off the track. I'll ask our local Pirelli dude for his recommendations but I'm betting they're going to be something on the order of 32 (front) and 28 (rear) when HOT... but wait til I hear back from them to see what they'd recommend... I'll post up. Obviously for street longevity, you'd probably want closer to factory recommended pressures (higher) - but for "spirited riding" where handling IS an issue, you'll want to drop the pressures.

Streets of Willow is a GREAT place to get your suspension setup properly! (and your tires are THE primary suspension component!)

(Message edited by slaughter on February 19, 2009)
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Slaughter
Posted on Thursday, February 19, 2009 - 01:29 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Contact Corey Taylor at Corey Talor Racing (Pirelli). It's where all the local racers on Pirelli buy their tires. His website is blocked for me at work so I can't get you his contact information but the link is: http://shop.coreytaylorracing.com/main.sc

Tell him that Slaughter from WSMC put you on to him.

(Message edited by slaughter on February 19, 2009)
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Paint_shaker
Posted on Thursday, February 19, 2009 - 07:35 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Plus what the others have said about Corsa IIIs. I am running slow expert times at my track on them. Corsa IIIs do not call for warmers, but I have been using them without problems. I was planning on using them as race tires simply because I have 3 bikes, and tires ain't cheap!! That will probably change though.

The Pirelli rep will be at my track this weekend (Jennings) and I will be getting more info from them.
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Slaughter
Posted on Monday, February 23, 2009 - 04:04 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Corey just called - he said that a decent starting pressure (COLD) on the DCIII is 30(front) and 28(rear)
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