MotoHouston.com MotoHouston.com
Register Members List Member Map Media Calendar Garage Forum Home Mark Forums Read

Go Back   MotoHouston.com > General Discussion > General Discussion (Moto Related)
Forgot info?

Welcome to MotoHouston.com! You are currently viewing our forums as a guest which gives you limited access to the community. By joining our free community you will have access to great discounts from our sponsors, the ability to post topics, communicate privately with other members, respond to polls, upload content, free email, classifieds, and access many other special features. Registration is fast, simple and absolutely free, join our community!

Register Today!

If you have any problems with the registration process or your account login, please contact us.


Like us on Facebook! Regular shirt GIVEAWAYS and more

Advertisement

Reply
Share This Thread: 
Subscribe to this Thread Thread Tools
Old 10-30-2011, 10:44 AM   #1
Patrick
Motorcycles Unlimited
 
Join Date: Jun 2005
Location: Houston
Feedback Rating: (2)
Posts: 16,368

Experience: 10+ years
Trackdays: 10+

Bike(s):
'14 Speed Triple R, '82 CB900F, '13 Streetglide






Exclamation Tire pressures

Everyday I see bikes that have low tire pressure. When I ask when's the last time the rider checked it most cannot remember.

Because they hold a smaller volume of air than car tires, bike tires are more sensitive to volume loss and temperature changes.

Especially right now with the temps moving 20-30 degrees a day, pressures can vary 4-5 psi.

Check your tires at least every 2 weeks, and set them cold.
For most street sportbike riders 36 front and 34 rear or 36 front and rear are good pressures.

If in doubt, consult your owners manual.

Proper tire pressures mean longer tire life and better handling.
Get yourself a good quality pencil gauge. Not the .99 cent one from Walmart, but a $5-6 one from an auto parts store or bike shop.
Make sure it has an accuracy range within 1-2%.

One last thing to consider is because both your tires and the road is colder you will have less available traction.
Ride safe.
__________________
Call or PM for the BEST PRICES in Houston for PARTS and ACCESSORIES.
MAKE SURE TO MENTION YOU'RE ON MH TO GET THE BEST PRICE!

NEED GEAR? We have a great selection in stock but if we need to order it we GUARANTEE FIT!
Where Houston riders go to have their bikes worked on, done right the first time!


muad

1964 FM 1960 West
Houston, TX 77090
Hours: Tues.-Fri. 9:30-6:00 Sat. 9-5:30
www.motorcycles-unlimited.com
http://www.facebook.com/motorcyclesunlimited
e-mail: patrick@motorcycles-unlimited.com
Patrick is offline   Reply With Quote
Similar Topics
Thread Thread Starter Forum Replies Last Post
tire pressures Chuckster Performance and Modifications 20 06-06-2013 01:50 PM
Tire pressures on the track??? j_e_hurst Taking it to the Track 25 08-14-2012 06:33 PM
Check Your Tire Pressures! Patrick General Discussion (Moto Related) 35 11-30-2009 11:27 AM
Chek Your Tire Pressures! Patrick How To's and Q & A's 13 12-28-2007 02:48 PM
COLD tire pressures CarbonJames General Discussion (Moto Related) 15 10-28-2005 11:37 PM
Advertisement
Old 10-30-2011, 10:57 AM   #2
Tojo92
AKA Mongo
 
Tojo92's Avatar
 
Join Date: Jul 2007
Location: Cedar Park, TX
Feedback Rating: (7)
Posts: 5,142

Experience: 10+ years
Trackdays: 10+

Bike(s):
1994 Ducati 900 SS/SP
2003 Honda CRF450R motard
2002 Husqvarna NOX
2001 KTM Duke II






Great reminder.

I check bike tire pressure before every ride.

Wife's minivanimal transporter and my car get checked once a month. I may need to change that to every two weeks with the temp changes though.

Thanks for the reminder.

Staton
__________________
CMRA#665 (neighbor of the beast)
The Problem - Endurance
Tojo92 is offline   Reply With Quote
Old 10-30-2011, 10:57 AM   #3
CraigRR
CMRA # 147
 
CraigRR's Avatar
 
Join Date: Mar 2011
Location: Crosby
Feedback Rating: (3)
Posts: 8,871

Experience: 10+ years
Trackdays: 10+

Bike(s):
2009 Honda CBR 1000RR ABS
2011 EX250NinjaR
2001 Yamaha TTR-L (sold to Jimrad)
2015 KTM RC 390 CUP






The last set of power one's I had put on my bike, the guy said to keep the pressure around 38 to 40 psi. The side of the tire says max psi 42. I currently keep them at 38 psi, is that too much? I check the psi every 2 days.
CraigRR is offline   Reply With Quote
Old 10-30-2011, 11:40 AM   #4
Rael
Communist Plant
 
Rael's Avatar
 
Join Date: Oct 2010
Location: Boerne
Feedback Rating: (0)
Posts: 2,235

Experience: 3 years
Trackdays: 10+

Bike(s):
'12 Griso 8v
'13 Wr250r








+1 on the temperature!

I checked my tire pressure right before the norther, and again right before a ride yesterday. 4 psi drop front and rear.
Rael is offline   Reply With Quote
Old 10-30-2011, 11:40 AM   #5
Jefe
Senior Member
 
Jefe's Avatar
 
Join Date: May 2008
Location: Cypress
Feedback Rating: (2)
Posts: 1,422

Trackdays: 1

Bike(s):
'12 Haro Flightline 29er
'09 R6 (sold)
'07 V-Star 1100 Custom (sold)
'01 F4i (sold)






Thanks for the reminder. Very important.
__________________
YourTexasRealtor
Jefe is offline   Reply With Quote
Old 10-30-2011, 12:21 PM   #6
Dread6
BANNED
 
Dread6's Avatar
 
Join Date: Feb 2011
Location: Houston
Feedback Rating: (0)
Posts: 517

Experience: 1-3 months
Trackdays: 1

Bike(s):
2009 Triumph Daytona 675
2012 Triumph Daytona 675R





I've been following your preride check guide. I checked the pressures lube and cleaned the chain then she sat for a month. Went to ride something told me to check them luckly I did.

I was wondering if I should raise from a 34/36psi to 36/36psi since its colder? I'm getting some slip in the rear I am assuming because my tires and roads are cold.
__________________
http://i288.photobucket.com/albums/ll171/NappyDread6/09%20Triumph%20Daytona/R8P1282m-M.jpg
Dread6 is offline   Reply With Quote
Old 10-30-2011, 12:39 PM   #7
Patrick
Motorcycles Unlimited
 
Join Date: Jun 2005
Location: Houston
Feedback Rating: (2)
Posts: 16,368

Experience: 10+ years
Trackdays: 10+

Bike(s):
'14 Speed Triple R, '82 CB900F, '13 Streetglide






Raising the pressure will cause the tire to run colder. What you're experiencing is the norm for colder tires and roads.
__________________
Call or PM for the BEST PRICES in Houston for PARTS and ACCESSORIES.
MAKE SURE TO MENTION YOU'RE ON MH TO GET THE BEST PRICE!

NEED GEAR? We have a great selection in stock but if we need to order it we GUARANTEE FIT!
Where Houston riders go to have their bikes worked on, done right the first time!


muad

1964 FM 1960 West
Houston, TX 77090
Hours: Tues.-Fri. 9:30-6:00 Sat. 9-5:30
www.motorcycles-unlimited.com
http://www.facebook.com/motorcyclesunlimited
e-mail: patrick@motorcycles-unlimited.com
Patrick is offline   Reply With Quote
Old 10-30-2011, 12:49 PM   #8
Bevo
Hook 'em!
 
Bevo's Avatar
 
Join Date: Mar 2009
Location: Houston-The South Loop
Feedback Rating: (0)
Posts: 24,319

Experience: 10+ years
Trackdays: 3

Bike(s):
'12 CBR1000RR Red/Black
'14 CB1000R Matte Gray
'10 CBR1000RR (destroyed)
'09 CBR1000RR C-ABS (sold)
'09 CBR600RR C-ABS (sold)

Member Garage





Quote:
Originally Posted by craig_gsxr600 View Post
The last set of power one's I had put on my bike, the guy said to keep the pressure around 38 to 40 psi. The side of the tire says max psi 42. I currently keep them at 38 psi, is that too much? I check the psi every 2 days.
For everyday riding I do 36 front and 42 rear, because that's what's on the swing arm placard, in the owners manual, and what two techs with Bridgestone recommended. What's on the tire is maximum cold pressure which may not be correct for your bike.
__________________
Quote:
Originally Posted by bumblebee View Post
"I lack skillz"
Bevo is offline   Reply With Quote
Old 10-30-2011, 12:52 PM   #9
Dread6
BANNED
 
Dread6's Avatar
 
Join Date: Feb 2011
Location: Houston
Feedback Rating: (0)
Posts: 517

Experience: 1-3 months
Trackdays: 1

Bike(s):
2009 Triumph Daytona 675
2012 Triumph Daytona 675R





That's what I assumed so I don't lean much until after I have ridden a couple miles, but I don't know when they are warmed up so its messing up my ability to get off the bike.

I thought the higher the pressure the faster they will warm up, also the bike tips in better. With lower pressure the tires hug the road better but take longer to warm up.

There is a sticker on the bike that says with X size tire 34psi front and with Y size tire 36psi rear so that's what I've been sticking with when it got cold. I reversed them when it was hot
__________________
http://i288.photobucket.com/albums/ll171/NappyDread6/09%20Triumph%20Daytona/R8P1282m-M.jpg
Dread6 is offline   Reply With Quote
Old 10-30-2011, 12:58 PM   #10
Bevo
Hook 'em!
 
Bevo's Avatar
 
Join Date: Mar 2009
Location: Houston-The South Loop
Feedback Rating: (0)
Posts: 24,319

Experience: 10+ years
Trackdays: 3

Bike(s):
'12 CBR1000RR Red/Black
'14 CB1000R Matte Gray
'10 CBR1000RR (destroyed)
'09 CBR1000RR C-ABS (sold)
'09 CBR600RR C-ABS (sold)

Member Garage





Quote:
Originally Posted by NappyDread6 View Post
That's what I assumed so I don't lean much until after I have ridden a couple miles, but I don't know when they are warmed up so its messing up my ability to get off the bike.

I thought the higher the pressure the faster they will warm up, also the bike tips in better. With lower pressure the tires hug the road better but take longer to warm up.

There is a sticker on the bike that says with X size tire 34psi front and with Y size tire 36psi rear so that's what I've been sticking with when it got cold. I reversed them when it was hot
More air keeps the tires cool, less air heats them up. For the street you should always set the tires when they're cold and at the recommended pressure, no matter what the air temperature is.

If you run lower pressure than what's recommended it will affect tire wear.

I ride in temps as low as 30 degrees and I've never had an issue with tires slipping on the street unless I'm leaned over on a metal expansion joint, but it's no big deal and I just ignore it.
__________________
Quote:
Originally Posted by bumblebee View Post
"I lack skillz"

Last edited by Bevo; 10-30-2011 at 01:01 PM.
Bevo is offline   Reply With Quote
Old 10-30-2011, 12:59 PM   #11
Stang Man
being rude
 
Join Date: Dec 2010
Location: Northside Houston
Feedback Rating: (1)
Posts: 1,094

Experience: 8 years

Bike(s):
2003 Z1000
2005 KTM 625 SMC(sold)
1994 ZX-11(sold)
1983 Honda Nighthawk(sold)

Member Garage





Quote:
Originally Posted by NappyDread6 View Post
That's what I assumed so I don't lean much until after I have ridden a couple miles, but I don't know when they are warmed up so its messing up my ability to get off the bike.

I thought the higher the pressure the faster they will warm up, also the bike tips in better. With lower pressure the tires hug the road better but take longer to warm up.

There is a sticker on the bike that says with X size tire 34psi front and with Y size tire 36psi rear so that's what I've been sticking with when it got cold. I reversed them when it was hot
With lower pressure, the tire carcass flexes more, and this is what creates the heat in the tire compound.
__________________
2003 Kawasaki Z1000
1989 Ford Mustang GT: 331, AFR 185's, full MM suspension, Cobra brakes
1991 Mazda RX-7: 5.0 V8, 24 Hours of Lemons racecar
Family bikes: V-Star 1100, Harley 883, KLR-650
Stang Man is offline   Reply With Quote
Old 10-30-2011, 01:10 PM   #12
Bevo
Hook 'em!
 
Bevo's Avatar
 
Join Date: Mar 2009
Location: Houston-The South Loop
Feedback Rating: (0)
Posts: 24,319

Experience: 10+ years
Trackdays: 3

Bike(s):
'12 CBR1000RR Red/Black
'14 CB1000R Matte Gray
'10 CBR1000RR (destroyed)
'09 CBR1000RR C-ABS (sold)
'09 CBR600RR C-ABS (sold)

Member Garage





Tires also have a property known as coefficient of rolling friction. The force it takes to roll the tire when it's carrying the weight of a vehicle causes heat to build up in the tire. The lower the tire pressure, the higher the coefficient of rolling friction which means higher tire temps.
__________________
Quote:
Originally Posted by bumblebee View Post
"I lack skillz"

Last edited by Bevo; 10-30-2011 at 01:12 PM.
Bevo is offline   Reply With Quote
Old 10-30-2011, 02:01 PM   #13
Dread6
BANNED
 
Dread6's Avatar
 
Join Date: Feb 2011
Location: Houston
Feedback Rating: (0)
Posts: 517

Experience: 1-3 months
Trackdays: 1

Bike(s):
2009 Triumph Daytona 675
2012 Triumph Daytona 675R





Good to Know thanks

I run at higher pressures around town and lower them on group rides. I'm running the same set as you Bevo, what are your current pressures at?
__________________
http://i288.photobucket.com/albums/ll171/NappyDread6/09%20Triumph%20Daytona/R8P1282m-M.jpg
Dread6 is offline   Reply With Quote
Old 10-30-2011, 03:04 PM   #14
CraigRR
CMRA # 147
 
CraigRR's Avatar
 
Join Date: Mar 2011
Location: Crosby
Feedback Rating: (3)
Posts: 8,871

Experience: 10+ years
Trackdays: 10+

Bike(s):
2009 Honda CBR 1000RR ABS
2011 EX250NinjaR
2001 Yamaha TTR-L (sold to Jimrad)
2015 KTM RC 390 CUP






Quote:
Originally Posted by Bevo View Post
For everyday riding I do 36 front and 42 rear, because that's what's on the swing arm placard, in the owners manual, and what two techs with Bridgestone recommended. What's on the tire is maximum cold pressure which may not be correct for your bike.
Thanks Bevo! I'll check out my owners manual and adjust pressure to spec. Maby the gixxer will handle better.
CraigRR is offline   Reply With Quote
Old 10-30-2011, 03:23 PM   #15
Bevo
Hook 'em!
 
Bevo's Avatar
 
Join Date: Mar 2009
Location: Houston-The South Loop
Feedback Rating: (0)
Posts: 24,319

Experience: 10+ years
Trackdays: 3

Bike(s):
'12 CBR1000RR Red/Black
'14 CB1000R Matte Gray
'10 CBR1000RR (destroyed)
'09 CBR1000RR C-ABS (sold)
'09 CBR600RR C-ABS (sold)

Member Garage





Quote:
Originally Posted by NappyDread6 View Post
Good to Know thanks

I run at higher pressures around town and lower them on group rides. I'm running the same set as you Bevo, what are your current pressures at?
Like I posted...36 front and 42 rear
__________________
Quote:
Originally Posted by bumblebee View Post
"I lack skillz"
Bevo is offline   Reply With Quote
Old 10-30-2011, 03:34 PM   #16
Patrick
Motorcycles Unlimited
 
Join Date: Jun 2005
Location: Houston
Feedback Rating: (2)
Posts: 16,368

Experience: 10+ years
Trackdays: 10+

Bike(s):
'14 Speed Triple R, '82 CB900F, '13 Streetglide






Most manufacturers put 42 psi. for the rear tire for liability issues. If you go out and pin it and run 130 plus speeds for a continuous period you could overheat the tire and have it fail. Imo for most street riders of sportbikes a rear pressure between 34-38 psi. will handle better and give better traction. At the track we run them even lower but I do not recommend those pressures for the street.
__________________
Call or PM for the BEST PRICES in Houston for PARTS and ACCESSORIES.
MAKE SURE TO MENTION YOU'RE ON MH TO GET THE BEST PRICE!

NEED GEAR? We have a great selection in stock but if we need to order it we GUARANTEE FIT!
Where Houston riders go to have their bikes worked on, done right the first time!


muad

1964 FM 1960 West
Houston, TX 77090
Hours: Tues.-Fri. 9:30-6:00 Sat. 9-5:30
www.motorcycles-unlimited.com
http://www.facebook.com/motorcyclesunlimited
e-mail: patrick@motorcycles-unlimited.com
Patrick is offline   Reply With Quote
Old 10-30-2011, 05:05 PM   #17
ivancuriel
Sancho Pedotes
 
ivancuriel's Avatar
 
Join Date: Apr 2010
Feedback Rating: (4)
Posts: 647

Experience: 1-3 months
Trackdays: 1

Bike(s):
2009 Yamaha R6 Raven.
2012 Yamaha R1 Moto GP Edition





What other negative affects are there besides tire wear? I run 30f 29r on my Q2s but I only do 30 minutes of hard riding a week roughly. I don't commute on it and when i get home i set it on my stands. I don't care about tire wear, I just want the most traction. Is there something else you'd recommend?
ivancuriel is offline   Reply With Quote
Old 10-30-2011, 05:07 PM   #18
Patrick
Motorcycles Unlimited
 
Join Date: Jun 2005
Location: Houston
Feedback Rating: (2)
Posts: 16,368

Experience: 10+ years
Trackdays: 10+

Bike(s):
'14 Speed Triple R, '82 CB900F, '13 Streetglide






That's probably a bit low for street use imo, even aggressive street use.
__________________
Call or PM for the BEST PRICES in Houston for PARTS and ACCESSORIES.
MAKE SURE TO MENTION YOU'RE ON MH TO GET THE BEST PRICE!

NEED GEAR? We have a great selection in stock but if we need to order it we GUARANTEE FIT!
Where Houston riders go to have their bikes worked on, done right the first time!


muad

1964 FM 1960 West
Houston, TX 77090
Hours: Tues.-Fri. 9:30-6:00 Sat. 9-5:30
www.motorcycles-unlimited.com
http://www.facebook.com/motorcyclesunlimited
e-mail: patrick@motorcycles-unlimited.com
Patrick is offline   Reply With Quote
Old 10-30-2011, 05:13 PM   #19
BusaFlo
Lost, But Still Ridding
 
BusaFlo's Avatar
 
Join Date: Jun 2005
Location: SE, LEAGUE CITY
Feedback Rating: (0)
Posts: 544

Experience: 10+ years
Trackdays: 4

Bike(s):
06 Busa
85 Honda Rebel








Quote:
Originally Posted by ivancuriel View Post
What other negative affects are there besides tire wear? I run 30f 29r on my Q2s but I only do 30 minutes of hard riding a week roughly. I don't commute on it and when i get home i set it on my stands. I don't care about tire wear, I just want the most traction. Is there something else you'd recommend?

Fuel Consumption...underinflation will burn more fuel. At least that is what I have always heard.
__________________
BusaFlo is offline   Reply With Quote
Old 10-30-2011, 05:21 PM   #20
Bluestreak06
Maine-ah
 
Bluestreak06's Avatar
 
Join Date: Jan 2009
Location: Tomball
Feedback Rating: (0)
Posts: 2,171

Experience: 10+ years

Bike(s):
2011 Hayabusa
2006 GSXR-600 (sold)
1981 yamaha XS 650(sold)


Member Garage


i run 36 front and rear......i check it often, but not often enough
__________________


Quote:
Originally Posted by kibitzer View Post
If you don't shake it after you pee the terrorists win.
Ben C.
Bluestreak06 is offline   Reply With Quote
Reply


Thread Tools

Advertisement


All times are GMT -5. The time now is 05:26 AM.


MotoHouston.com is not responsible for the content posted by users.
Privacy Policy