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Old May 29th 2012, 09:58 PM   #1
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Tire Pressure - Inconsistent Information

So the manual says that tire pressure should be roughly 30.5 psi in the front and 32 psi in the rear. However, today I noticed that the tag on the right side of the bike that contains the vin number says 33.4 psi front and 37.8 psi rear. Does anyone know why there is this discrepancy?

Also what pressure are you guys running? My dealer put 35 in the front and 38 in the rear...which made the ride hard as hell. I lowered it to 30/32 and it seems perfect...but not sure how the tires will wear.
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Old May 29th 2012, 10:08 PM   #2
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Here is the deal,

Your looking for a operating pressure, heat creates pressure.

If your start at 30 psi, and go crazy sliding, braking turn hard ...the bike around and build tons of heat you could get that pressure up to 40 psi easy.

So the bigger question is what does the manufacture want as a operating pressure, all manufacturers are different and street compounds vs race compounds.

The OEM tires on the 1199 are a hybrid.

My guess ( because i don't know ) is that they will be very happy at 38 psi.

The question is where do you have to start to get there, ...well that depends on outside and tarmac temperature and how you ride.

So start at 32/31 and ride like you do, then check your tire pressure.

However here is where it gets tricky, if its to high, then add air don't remove air... i know what your are thinking...WHAT??

Less air will cause more heat because it will create more friction. Add air to cool tire and cause less PSI.

Then next time start with one more pound.

Hope that helps..
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Last edited by doctorj; May 30th 2012 at 03:18 PM.
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Old May 30th 2012, 01:00 AM   #3
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If u look along the sidewalls of the tyres u should see something like 36psi for front and 42 psi for rear COLD.

At least thats what i have been seeing with my tyres(diablo rosso corsas, dragon supercorsa, diablo rosso2s) on other superbikes.
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Old May 30th 2012, 03:20 AM   #4
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aren't those pressures on the sidewalls generally a max. psi inflation?

Originally Posted by akalapovic View Post
If u look along the sidewalls of the tyres u should see something like 36psi for front and 42 psi for rear COLD.

At least thats what i have been seeing with my tyres(diablo rosso corsas, dragon supercorsa, diablo rosso2s) on other superbikes.
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Old May 30th 2012, 06:39 AM   #5
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@ ZVEZ Yes I agree with you, they are normally Max pressure Cold.

I wouldn't put those max pressures in them. I've had a club member here do that and blow his valve out when the tire got hot. Not fun, but luckily didn't get hurt.

I agree with DoctorJ start with about 32/31. Also remember that the "recommended" cold tire pressures are probably to ensure longevity of the tire, not to give maximum contact and grip which you achieve by going a little lower.

On my 848 I generally use 29/28 on track, but I know guys that will go as low as 26 cold on the rear with certain tires. Also note it gets hot here so we might be going lower than you would want to in the US/EU.
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Old May 30th 2012, 07:59 AM   #6
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On the 1198 I experimented with tire pressures. What I found was for fairly hard riding in the canyons and around town, 31 front and 30 rear (cold pressures) worked well as the supercorsa's build heat pretty quickly and stick well. I didn't like the way the bike felt with much more air than that. For just cruising around leisurely I would go with 33 front and 32 rear. Never inflate to max pressure on the tire sidewall, those pressures are for fully loaded two up riding and will cause you problems for sporty riding..
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Old May 30th 2012, 12:09 PM   #7
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Originally Posted by 1198freak View Post
On the 1198 I experimented with tire pressures. What I found was for fairly hard riding in the canyons and around town, 31 front and 30 rear (cold pressures) worked well as the supercorsa's build heat pretty quickly and stick well. I didn't like the way the bike felt with much more air than that. For just cruising around leisurely I would go with 33 front and 32 rear. Never inflate to max pressure on the tire sidewall, those pressures are for fully loaded two up riding and will cause you problems for sporty riding..
+1, have the same experience with mine
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Old Oct 21st 2012, 04:25 AM   #8
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Here's a good article on reading a tire for track days.

DIY: How to Read Tire Wear on your Motorcycle | 2WheelTuesday

and here's an article on tire pressures:

http://bostonmoto.com/uncategorized/...ure-dial-it-in

Last edited by zvez; Oct 21st 2012 at 04:28 AM.
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Old Oct 22nd 2012, 09:39 PM   #9
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Little confused about the pressures. Is it with just Pirellis that the recommended front tire pressure is higher than the rear?

DIABLO SUPERCORSA SC , Motorcycle Tyres - PIRELLI INTERNATIONAL
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Old Oct 22nd 2012, 09:42 PM   #10
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I've never heard of a higher in the rear, so no....

My Tires:
Dunlop 21/31
Michelin 28/31
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