how much air?

[Alex2]

hey this is my first bike and im trying to figure out how much air to put in the tires. It says 90/100 on the back tire and 70/100 on the front is that the presure or something else?

thanks

 

[LEllis7motox]

That's the size of the tire. What bike did you get? I put 9lbs in the front and 12lbs in the rear usually depending how the weather is, and that's on a yz250f.

 

[Alex2]

i have a drz125L Im just using a foot pump that reads pressures so i dont know how much it is in terms that you were using(LB). Thanks for any help!

 

[helio lucas]

alex, lbs is just a unit for pressure. like 10 dollars is still money...
look at the pump manometer. usualy have two or three scales. one in bar, another is psi, the same as lbs.
use 15 bar or 215 psi on both tiresand you will be fine.

 

[High Lord Gomer]

use 15 bar or 215 psi on both tiresand you will be fine.

I assume you're kidding...that would blow the tire apart.

Use 0.8 - 0.9 bar (11.5 - 13 PSI).

 

[mideastrider]

I use no less than 13 to 15 in front and 10 to 12 in the rear for woods riding.

 

[truespode]

I run between 8psi and 10psi front and rear unless I am doing really rocky conditions like in West Virginia, then I run 12psi - 13psi.

Ivan

 

[holeshot]

I like to run about 12.5 psi front and rear.

I would run 13 psi if it weren't an unlucky number ... :whoa:

 

[2strokerfun]

I like to run about 12.5 psi front and rear.

I would run 13 psi if it weren't an unlucky number ... :whoa:

I apparently inherited my dad's superstitious nature. But I've managed to overcome this for tire pressure. So, I generally do run 13. I check it every couple of times I ride.

 

[truespode]

Just remember that the psi will increase as you ride your bike due to the heat build up.

If you start out with 13 you could end up riding with 16 during the day.

That is why I choose to go around 8 or 10.

Ivan

 

[helio lucas]

alex, lbs is just a unit for pressure. like 10 dollars is still money...
look at the pump manometer. usualy have two or three scales. one in bar, another is psi, the same as lbs.
use 15 bar or 215 psi on both tiresand you will be fine.

:|
i mean 15 psi and 1.2 bar. just because the wheels don´t have a tire holder...
:coocoo:

 

[redneckbillybob]

be sure to convert your jigawats to decibals before measuring the sydoxometer for correct air pressure volume per square mm

 

[RYDMOTO]

If you want to be crash proof I have some air tanks with Chicago air in them that I can sell you cheap.Whatever you do do not use California air....you bike will be be all squirrely.

 

[redneckbillybob]

i heard california air is about 80-85% pollution.

 

[MikeT]

alex, lbs is just a unit for pressure. like 10 dollars is still money...
look at the pump manometer. usualy have two or three scales. one in bar, another is psi, the same as lbs.
use 15 bar or 215 psi on both tiresand you will be fine.

??? You can't be serious.

14 PSI is all you need.