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Old 09-13-2012, 06:15 PM   #1
Tojo92
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Michelin Pilot Pure tire pressure question

Got the CB-1 back from Roger at OROR with my Big Boy Springs.

Going over the bike tonight and making sure it's good to go for MSRH Saturday.

The bike currently has Michelin Pilot Pures on it. I have ridden on borrowed bikes with these tires and liked them OK, but I have never run Michelins before. The track notes/manual I was given with the bike indicates that Michelin Pilot Pures A or soft compound should be set to the following:

COLD : Front at 25 PSI
COLD : Rear at 30 PSI



Tim Johnson put the book together, so I am inclined to believe this is NOT an error. BUT...Seems a little off to me from my experience with other brands.

The bike is just under 400 lbs, I am at 260. Any Michelin guys able to give me a real world idea of what to run, or can they can confirm the data in the manual that came with the bike?

I looked on the sidewalls and cannot see any indication of the compound, although I may just be missing it.

Any help/advice would be appreciated.

Mongo.
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Old 09-13-2012, 06:30 PM   #2
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not sure there are different compounds with the power pures - are you sure he wasn't running power ones?

I have notes for the power pures from my gsx-r, but they are mostly from TWS (Texas World Speedway). I may have run them once at msrh. I can pull them out tonight and shoot you an e-mail if you'd like.

I definitely didn't run pressures like those you posted, though. more like the inverse, actually.
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Old 09-13-2012, 06:34 PM   #3
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Quote:
Originally Posted by tankmonkey View Post
not sure there are different compounds with the power pures - are you sure he wasn't running power ones?

I have notes for the power pures from my gsx-r, but they are mostly from TWS (Texas World Speedway). I may have run them once at msrh. I can pull them out tonight and shoot you an e-mail if you'd like.

I definitely didn't run pressures like those you posted, though. more like the inverse, actually.
"Pilot Power ONE", just double checked in the book. The bike has Pilot Powers on it now but I don't see a 'one" anywhere. Thanks for the double check.
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Old 09-14-2012, 07:00 AM   #4
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Old 09-14-2012, 07:02 AM   #5
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Quote:
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Ive heard a general 30/30 for street tires on track. Id try 30 front, 28 rear on the track. Under 4lb's growth, take a pound out. Over 4lb's growth, put a pound in.

Hope someone chimes in to verify that rule of thumb.
Yep, Exactly what I was thinking.

I am planning on starting with Cold pressures of F30.R28 to see what happens. If I get the right "growth" or 3-4 lbs after a track session and the tires are hot, I'll assume I am in the ballpark.

Thanks.
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Old 09-14-2012, 10:54 AM   #6
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I follow the same rule of thumb for street tires, but note that I rarely get the front tire hot enough to see 4 lbs of growth. I'm generally happy if I can get 2 lbs or so on true street tires.

if you're a heavy braker or use significant trail braking a lot, you'll have a better shot of seeing 3-4 lbs of growth in the front tire.
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Old 09-14-2012, 12:17 PM   #7
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no no no...Pures have way higher PSI's.. I put mine at the track hot off the warmers at 36.. Are you running them on the street. PM Randy Joy... He used to work with Michelin.
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Old 09-14-2012, 02:10 PM   #8
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i run 31/32 on my front and 34 in my rear with my Pures. When I ran the One's I ran a 30/32 ratio and with the BT=016's I ran them at 32/36. I also constantly monitor my pressures and Keep them at those pressures.
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Old 09-14-2012, 02:18 PM   #9
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When I had the Pures on my R1 I ran 31 front 30 rear. Never did track so I can't comment on that.
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Old 09-14-2012, 02:34 PM   #10
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To clarify, I made an error in the header post...these are not Pures. They are Pilot Powers.

I am going to put a call into Island racing (I think that's the vendor for Michelin)
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Old 09-14-2012, 04:17 PM   #11
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good idea... get it from the horses mouth...
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Old 09-14-2012, 04:35 PM   #12
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Quote:
Originally Posted by Rykoson View Post
good idea... get it from the horses mouth...
good idea, don't be taking your life with other's bullshit responses
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Old 09-14-2012, 04:57 PM   #13
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You're a puss if you don't run them at 25/25 for the first three laps!!!

Dont need no stinkin' air!!!!
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Old 09-14-2012, 04:59 PM   #14
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David Hirsch at Island will send you in the right direction. He has been in this sport....for heck like a million years...but don't tell him I said that! Good luck and enjoy. Would love to see that bike at a CMRA event, I love those old bikes!
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Old 09-14-2012, 06:31 PM   #15
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Quote:
Originally Posted by Pachuco View Post
good idea, don't be taking your life with other's bullshit responses
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Old 09-14-2012, 06:35 PM   #16
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Quote:
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You're a puss if you don't run them at 25/25 for the first three laps!!!

Dont need no stinkin' air!!!!
that's what you used to say about the TMGP bike, too, as I recall...
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Old 09-14-2012, 06:36 PM   #17
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Quote:
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David Hirsch at Island will send you in the right direction. He has been in this sport....for heck like a million years...but don't tell him I said that! Good luck and enjoy. Would love to see that bike at a CMRA event, I love those old bikes!
I spoke to David, very nice guy. He suggested F32/R30.

I left a message and let him know the situation on a voicemail. I didn't buy the tires from him, and I haven't bought from him in the past (that I recall) and he still took the time to return the call and give me his advice and comments. He even warned me to not listen to some others that may suggest lower pressures. I appreciate his customer service and advice.

Gonna do what he said, I can't think of a better source.

The bike is a former CMRA bike with a cool history from what I have gathered. If it is as much fun as I am expecting, I may consider a CMRA license. I figure I can be great passing practice for everyone so they have more fun!
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Old 09-14-2012, 06:37 PM   #18
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Quote:
Originally Posted by tankmonkey View Post
that's what you used to say about the TMGP bike, too, as I recall...
Hey now, lot's of people may not have noticed a flat for a few laps...OK, maybe only me.
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Old 09-14-2012, 06:48 PM   #19
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Quote:
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Hey now, lot's of people may not have noticed a flat for a few laps...OK, maybe only me.
the real problem here is that you went faster with the flat...
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Old 09-14-2012, 06:54 PM   #20
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Quote:
Originally Posted by tankmonkey View Post
the real problem here is that you went faster with the flat...
Ignorance is bliss...I am a very happy man.
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