PSI? - Pirelli Diablo II

gaby · April 7th, 2012, 09:20 PM

Just got new Pirelli Diablo II tires does anyone know at what PSI they should be if riding at the street? and what PSI for the track?

Alex · April 15th, 2012, 09:37 AM

I'm surprised there weren't some comments on this already. I'll move it into the tech section, and perhaps more folks will see it.

Jiggles · April 15th, 2012, 12:31 PM

I saw it in the unread posts section

TnNinjaGirl · April 17th, 2012, 08:50 PM

I'm running 32 front and 34 back. I've tried higher and lower. This seems to be the best for me so far. Aggressive street riding.

NDspd · April 18th, 2012, 10:48 AM

I usually stay at 28 front, 32 rear, and maybe a little higher sometimes.

LoD575 · April 18th, 2012, 11:27 AM

I'm still playing around with pressure as well but currently at 30 front, 32 rear. Seems to be working out well so far.

alex.s · April 18th, 2012, 12:28 PM

what kind of asphalt? how smooth? it varies on conditions

gaby · April 20th, 2012, 09:06 PM

K thanks for the input, now that I have the street PSI down it's time for me to find out the PSI at the track. LOL! Track day coming up so will have to set them up for track day

MikeBudd · April 20th, 2012, 11:03 PM

I'm at 33 Front 30 Rear right now. Seems to be working well. I have tried higher (38 and 36 is what I think the dealer had it at :O), but haven't gone much lower yet. I will probably try a different combination next week, but since they have been working out so well, I'm hesitant to change it even though it's super easy!

mfresh · March 10th, 2013, 03:11 PM

Glad I found this thread. Was wondering what was a good tire pressure for these DRII's.

I checked my front tire pressure today and it was at 18 PSI...

Had no idea. Not sure what difference low tire pressure makes in the riding characteristics but I think it's been this low since I got the tires installed couple months ago.

Used a bicycle pump to get them back up to spec.

Motofool · March 10th, 2013, 05:45 PM

Quote:

Originally Posted by mfresh

.........Not sure what difference low tire pressure makes in the riding characteristics but I think it's been this low since I got the tires installed couple months ago..........

Don't neglect you tires, a lot rides over those two little contact patches.

Check the pressure, cuts and general condition of your tires at least once a week.

Good riders do it before each riding day.

http://www.sportrider.com/tech/tires...e/viewall.html

.........your tires will last longer and your safety will stay high.

mfresh · March 10th, 2013, 09:03 PM

Quote:

Originally Posted by Motofool

Don't neglect you tires, a lot rides over those two little contact patches.

Check the pressure, cuts and general condition of your tires at least once a week.

Good riders do it before each riding day.

http://www.sportrider.com/tech/tires...e/viewall.html

.........your tires will last longer and your safety will stay high.

Thanks for the great article Motofool!

Motofool · March 11th, 2013, 07:44 AM

You are welcome, Manny

mgentz · March 11th, 2013, 10:03 AM

Has anyone tested the temps (as suggested in the posted article) or talked to a tire rep about the tires and optimum pressure? Pirelli normally likes to run their tires with pretty low pressures, but I would hate to ASSume this.

Otherwise....I will most likely start with 32/30 and go from there.

cuz · March 11th, 2013, 10:51 AM

I emaild Pirelli about this.

cuz · March 11th, 2013, 10:54 AM

I like post #2

http://www.triumph675.net/forum/showthread.php?t=22467

DaBlue1 · March 11th, 2013, 01:00 PM

Quote:

Originally Posted by mgentz

...Has anyone tested the temps (as suggested in the posted article) or talked to a tire rep about the tires and optimum pressure? Pirelli normally likes to run their tires with pretty low pressures, but I would hate to ASSume this.

Otherwise....I will most likely start with 32/30 and go from there.

Quote:

Originally Posted by cuz

I emaild Pirelli about this.

Interesting...

I got this email reply from Pirelli in May 2012

Hello

Please note one should always inflate tires to the correct tire pressure as indicated in the ownerâ€™s manual. However Pirelli North America has found the air pressure suggestions listed in our brochures will improve mileage and customer satisfaction. Check cold inflation pressure frequently. Correct tire pressure is crucial for safe handling. Over inflation may impair ride comfort and reduce the contact patch between the tire and the driving surface of the tires. Insufficient air pressure will result in poor handling and cause a tendency for the motorcycle to "wander". In addition, improper and insufficient tire pressure will cause accelerated tire wear, increased fuel consumption, less control and the possibilities for tire failure due to an overloaded/under inflated operating situation.

Hyper Sport, Supersport, Extended Mileage Sport radial tires, Bias-ply Sport Touring tires
Front
Solo / Riding with 2 / Riding 2 with extra load
32-34 / 34-36 / 36-42

Rear
Solo / Riding with 2 / Riding 2 with extra load
36-38 / 38-40 / 40-42

In closing Pirelli finds that running higher pressures (up to the max as stated on the sidewall) will increase the life of the tire with no adverse effects. Thanks for the question and have a great day.

NA Pirelli Moto Consumer Affairs
800 747-3554
www.us.pirellimoto.com

mgentz · March 11th, 2013, 01:09 PM

one is track pressures the other is street pressures. Looks like I'll set them to 32/32-34 and 32/25 for the track.

Thanks!

cuz · March 12th, 2013, 02:02 AM

The email is for track only.

tubarney · March 12th, 2013, 06:00 AM

I am running 24 front 28 rear. You can go all the way down to around 20 psi. Your tires are going to wear faster though.

cbinker · March 13th, 2013, 02:25 AM

i just run max on both at the track.

Dopamine · March 13th, 2013, 02:41 AM

My motorbike machanic says for steet you should run 36/38 rear 34 front and for track should run 32 rear 28 front.. But Note i live in Australia and the roads here are smooth and hot.

mgentz · March 13th, 2013, 04:43 AM

Quote:

Originally Posted by cbinker

i just run max on both at the track.

This is not a good idea. Track pressure should always be lower to increase the contact patch.

cbinker · March 13th, 2013, 04:31 PM

Quote:

Originally Posted by mgentz

This is not a good idea. Track pressure should always be lower to increase the contact patch.

at 27 hp, you dont need much contact patch, now at 100+, then it is needed.

tooblekain · March 13th, 2013, 05:05 PM

Quote:

Originally Posted by cuz

i like post #2

http://www.triumph675.net/forum/showthread.php?t=22467

holy deja vu!!!!

LoD575 · March 13th, 2013, 07:02 PM

Thanks for the updated posts cuz & DaBlue1.

I have been running 30f and 32r for a while but will bump it up to 32f and 36r. So far I have really been enjoying the Rosso II's and will not hesitate to buy them again.

mgentz · March 13th, 2013, 07:26 PM

Quote:

Originally Posted by cbinker

at 27 hp, you dont need much contact patch, now at 100+, then it is needed.

this logic is flawed. just because I only have 27 hp I should not have the optimum amount of traction? What about the extra safety factor afforded for those oh @$^& moments? I would argue that because our bikes are light and have little HP we could actually run the tires lower since we will not be stressing the carcass like a 600 or 1000. However, I'm also smart enough to know that there are diminishing returns and a balance needs to be found.

saying "run max everywhere" is not sound advice. saying 20 psi is not sound either. balance is needed. I will be using an infrared thermo to test tire tread temps and/or a tire pryometer when needed.

Rekognize · March 13th, 2013, 09:00 PM

Looks like I'll be setting mine to 32f/34-36r for street.

cbinker · March 13th, 2013, 09:01 PM

Quote:

Originally Posted by mgentz

this logic is flawed. just because I only have 27 hp I should not have the optimum amount of traction? What about the extra safety factor afforded for those oh @$^& moments? I would argue that because our bikes are light and have little HP we could actually run the tires lower since we will not be stressing the carcass like a 600 or 1000. However, I'm also smart enough to know that there are diminishing returns and a balance needs to be found.

saying "run max everywhere" is not sound advice. saying 20 psi is not sound either. balance is needed. I will be using an infrared thermo to test tire tread temps and/or a tire pryometer when needed.

you can argue it all you want, but my lap times at the track tell me what works best for me. There is more traction available then is needed for the amount of HP the bike has to offer. one of the tracks I go to I run 1'46 on the 250 and 1'42 on the ZX6R.

mgentz · March 14th, 2013, 01:13 PM

ok.

bruce71198 · March 15th, 2013, 05:38 AM

Dont forget that you will put more heat in the tire at the track thus increasing your hot tire pressure. HTP for track= 31 front, 27 rear. You could decrease that a pound or 2 due to the lower speeds.

April 7th, 2012, 09:20 PM	#1
gaby ninjette.org member Name: gabriela Location: Ottawa Join Date: Jul 2010 Motorcycle(s): ninja 250, ninja zx6r and KLX140 Posts: 29	PSI? - Pirelli Diablo II Just got new Pirelli Diablo II tires does anyone know at what PSI they should be if riding at the street? and what PSI for the track?

April 15th, 2012, 12:31 PM	#3
Jiggles Jigglin' your Jiglets Name: Sean Location: San Jose, Ca Join Date: Jun 2011 Motorcycle(s): 2009 K1300S, 2013 Ninja 300, 2011 Ninja 250R, Faster than Unregistered's ninjette Posts: Too much. Blog Entries: 1 MOTM - Apr '13	I saw it in the unread posts section __________________________________________________ If the Ninja 250 doesn't have enough power for you, then you don't know how to ride it. AFM #676 Supersports are for n00bs

April 18th, 2012, 12:28 PM	#7
alex.s wat Name: wat Location: tustin/long beach Join Date: Sep 2009 Motorcycle(s): wat Posts: Too much. Blog Entries: 5 MOTM - Oct '12, Feb '14	what kind of asphalt? how smooth? it varies on conditions __________________________________________________

March 10th, 2013, 03:11 PM	#10
mfresh Knee-dragger in Training Name: Manny Location: Buford, GA Join Date: Jul 2012 Motorcycle(s): '09 Ninja 250R (Sunbeam Red) Posts: 319	Glad I found this thread. Was wondering what was a good tire pressure for these DRII's. I checked my front tire pressure today and it was at 18 PSI... Had no idea. Not sure what difference low tire pressure makes in the riding characteristics but I think it's been this low since I got the tires installed couple months ago. Used a bicycle pump to get them back up to spec. __________________________________________________ North GA Riders

March 11th, 2013, 07:44 AM	#13
Motofool Daily Ninjette rider Name: Hernan Location: Florida Join Date: Mar 2011 Motorcycle(s): 2007 Ninja 250 Posts: A lot. MOTY - 2016, MOTM - Dec '12, Jan '14, Jan '15, May '16	You are welcome, Manny __________________________________________________ *Motofool* *.................................Never ride faster than your guardian angel can fly* "Mankind is composed of two sorts of men — those who love and create, and those who hate and destroy. Love is the bond between men, the way to teach and the center of the world." - José Martí

April 15th, 2012, 09:37 AM	#2
Alex ninjette.org dude Name: 1 guess :-) Location: SF Bay Area Join Date: Jun 2008 Motorcycle(s): '13 Ninja 300 (white, the fastest color!), '13 R1200RT, '14 CRF250L, '12 TT-R125LE Posts: Too much. Blog Entries: 7	I'm surprised there weren't some comments on this already. I'll move it into the tech section, and perhaps more folks will see it. __________________________________________________ Montgomery Street Motorcycle Club / cal24.com / crf250l.org / ninjette.org ninjette.org Terms of Service Shopping for motorcycle parts or equipment? Come here first. The friendliest Ninja 250R/300/400 forum on the internet! (especially Unregistered)

April 17th, 2012, 08:50 PM	#4
TnNinjaGirl Ms. Personality Name: CB Location: Murvill, TN Join Date: Jan 2009 Motorcycle(s): Depends on the week you ask Posts: A lot.	I'm running 32 front and 34 back. I've tried higher and lower. This seems to be the best for me so far. Aggressive street riding.

April 18th, 2012, 10:48 AM	#5
NDspd 1/4 English, 3/4 Kick Ass Name: Jeremy Location: Dayton, OH Join Date: Sep 2011 Motorcycle(s): 2002 Triumph Speed Triple 955i, '05 Suzuki SV650S(retired), '11 Ninja 250R(sold) Posts: A lot.	I usually stay at 28 front, 32 rear, and maybe a little higher sometimes.

April 18th, 2012, 11:27 AM	#6
LoD575 ninjette.org sage Name: Steve Location: Valdosta GA, US Join Date: Jul 2011 Motorcycle(s): 2012 Ninja 250, 2006 Ninja ZX6R-636 Posts: 661	I'm still playing around with pressure as well but currently at 30 front, 32 rear. Seems to be working out well so far.

April 20th, 2012, 09:06 PM	#8
gaby ninjette.org member Name: gabriela Location: Ottawa Join Date: Jul 2010 Motorcycle(s): ninja 250, ninja zx6r and KLX140 Posts: 29	K thanks for the input, now that I have the street PSI down it's time for me to find out the PSI at the track. LOL! Track day coming up so will have to set them up for track day

April 20th, 2012, 11:03 PM	#9
MikeBudd ninjette.org guru Name: Mike Location: Vancouver, British Columbia Join Date: Aug 2011 Motorcycle(s): RED 2010 Ninja 250r Posts: 304	I'm at 33 Front 30 Rear right now. Seems to be working well. I have tried higher (38 and 36 is what I think the dealer had it at :O), but haven't gone much lower yet. I will probably try a different combination next week, but since they have been working out so well, I'm hesitant to change it even though it's super easy!

March 11th, 2013, 10:03 AM	#14
mgentz Board Member Name: ... Location: WI Join Date: Dec 2011 Motorcycle(s): 250R (street), 250R (dirt) Posts: A lot.	Has anyone tested the temps (as suggested in the posted article) or talked to a tire rep about the tires and optimum pressure? Pirelli normally likes to run their tires with pretty low pressures, but I would hate to ASSume this. Otherwise....I will most likely start with 32/30 and go from there.

March 11th, 2013, 10:51 AM	#15
cuz cuz Name: Israel Location: Houston (me) Galveston Join Date: Jul 2011 Motorcycle(s): 09 ninja 250r Posts: A lot.	I emaild Pirelli about this. __________________________________________________ THE GOOD LIFE

March 11th, 2013, 10:54 AM	#16
cuz cuz Name: Israel Location: Houston (me) Galveston Join Date: Jul 2011 Motorcycle(s): 09 ninja 250r Posts: A lot.	I like post #2 http://www.triumph675.net/forum/showthread.php?t=22467 __________________________________________________ THE GOOD LIFE

March 11th, 2013, 01:09 PM	#18
mgentz Board Member Name: ... Location: WI Join Date: Dec 2011 Motorcycle(s): 250R (street), 250R (dirt) Posts: A lot.	one is track pressures the other is street pressures. Looks like I'll set them to 32/32-34 and 32/25 for the track. Thanks!

March 12th, 2013, 02:02 AM	#19
cuz cuz Name: Israel Location: Houston (me) Galveston Join Date: Jul 2011 Motorcycle(s): 09 ninja 250r Posts: A lot.	The email is for track only. __________________________________________________ THE GOOD LIFE

March 12th, 2013, 06:00 AM	#20
tubarney ninjette.org sage Name: Brad Location: Sydney Join Date: Mar 2012 Motorcycle(s): Ninja 250r 2010 SE Posts: 573	I am running 24 front 28 rear. You can go all the way down to around 20 psi. Your tires are going to wear faster though.

March 13th, 2013, 02:25 AM	#21
cbinker Track Clown Name: Chris Location: Kingman, AZ Join Date: May 2012 Motorcycle(s): '08 250R, 21 MV F3 800, Kawasaki 400 build Posts: A lot. MOTM - Sep '15	i just run max on both at the track. __________________________________________________ TEAM ALFALFA www.apexassassins.com

March 13th, 2013, 02:41 AM	#22
Dopamine Ninja on a Ninja member Name: Jay Location: The land Down under Join Date: Jun 2012 Motorcycle(s): Ninja 250r Posts: 52	My motorbike machanic says for steet you should run 36/38 rear 34 front and for track should run 32 rear 28 front.. But Note i live in Australia and the roads here are smooth and hot.

March 13th, 2013, 07:02 PM	#26
LoD575 ninjette.org sage Name: Steve Location: Valdosta GA, US Join Date: Jul 2011 Motorcycle(s): 2012 Ninja 250, 2006 Ninja ZX6R-636 Posts: 661	Thanks for the updated posts cuz & DaBlue1. I have been running 30f and 32r for a while but will bump it up to 32f and 36r. So far I have really been enjoying the Rosso II's and will not hesitate to buy them again.

March 13th, 2013, 09:00 PM	#28
Rekognize ninjette.org member Name: J Location: Toronto Join Date: Sep 2012 Motorcycle(s): Ninja 300 Posts: 103	Looks like I'll be setting mine to 32f/34-36r for street. __________________________________________________ My Ninja 300 Build Photoblog Greater Toronto Area 250/300 Riding Group

March 14th, 2013, 01:13 PM	#30
mgentz Board Member Name: ... Location: WI Join Date: Dec 2011 Motorcycle(s): 250R (street), 250R (dirt) Posts: A lot.	ok.

March 15th, 2013, 05:38 AM	#31
bruce71198 ninjette.org sage Name: bruce Location: northern illinois Join Date: Jan 2012 Motorcycle(s): Race bikes:08 Ninja 250,11 R6,16 ZX6,SV650.3 HD-1947,2-2003,2010. 1946 Indian and a lot of dirt bikes.2 Posts: 999	Dont forget that you will put more heat in the tire at the track thus increasing your hot tire pressure. HTP for track= 31 front, 27 rear. You could decrease that a pound or 2 due to the lower speeds.

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