March 11th, 2010, 12:53 AM | #1 |
ninjette.org member
Name: David
Location: Waxahachie
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Tire pressure....
Ok I misplaced my owner's manuel so I'm going to ask a really stupid question. What is the tire pressure suppose to be in my 09 ninjette?
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March 11th, 2010, 01:00 AM | #2 |
Frak It
Name: Sean
Location: SWFL
Join Date: Dec 2008 Motorcycle(s): 2008 Ninja 250R Posts: 199
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28 up front, 32 in back.
It's also listed on that black plate attached to the swingarm. |
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March 11th, 2010, 01:00 AM | #3 |
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Standard is 28psi up front, 32 in the rear. I think it's on the checklist sticker under the pillion seat. Also, here's a link for an electronic owners manual
http://www.ninjette.org/forums/showthread.php?t=38832
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March 11th, 2010, 01:01 AM | #4 |
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Name: David
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I should have remembered that is was on the check list but had a brain fart. The pain meds I'm on for my back injury does that to me.
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March 31st, 2010, 08:38 PM | #5 |
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Name: Josh
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Is 28/32 for Kawi's so called "average" 150lb rider? I weigh a good bit more than that, I'm thinking I should set it a little higher?
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April 1st, 2010, 11:11 AM | #6 |
noob motovlogger
Name: Gareth
Location: Austin, TX
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Oh wow. I've had mine way too high. I had just looked on the sidewalls and I could swear it said 36 psi both front and rear. Gonna have to go adjust that lol
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April 1st, 2010, 12:20 PM | #7 | |
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Quote:
that being said, I run 28/28 on my bike. |
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April 1st, 2010, 06:15 PM | #8 |
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My dealer sets the pressure very high. 40 psi at the back wheel and slightly less at the front. I told them that the manual says 28/32 and they said the tire wear is reduced with higher pressure. Of course that is true but you get less traction too. So I've been setting my tires 2 psi more than the manual 30/34, roughly. The uncertainty on my gage is probably 1 or 2 psi anyway.
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April 3rd, 2010, 10:28 AM | #9 |
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The manufacturers recommended pressure is for the most extreme conditions they expect the bike to see, i.e. max load, worst roads, extreme temperatures, etc. They are also chosen to maximize tire life. I many cases the pressures are higher than the typical American sport bike rider will need, i.e. solo rider, good roads, moderate temperatures, aggressive riding. Most of us will sacrifice a little tire life for additional traction. That being said the recommended pressures for the 250 Ninja with OEM type tires is very close. I run 28-29psi front and 30-32psi rear depending on conditions.
On the new-gens with quality aftermarket tires pressure requirements can change drastically. It is best to check with someone knowledgeable with your type of tire. (The manufacturer web sites are little help.) For example I use 25psi front and rear with my Bridgestone BT-003 tires. I don't think you will find that published anywhere.
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April 3rd, 2010, 10:53 PM | #10 |
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Name: Chris
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I've been running 32 front, 34 rear. I had no idea what they were supposed to be. Seems to work fine for me. Should you run higher pressure in a radial, vs a bias ply?
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April 4th, 2010, 09:33 PM | #11 | |
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Quote:
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April 13th, 2010, 06:40 PM | #12 |
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Just dont use "Firestone tires"
wait... that was only Fords with Firestones years back! As for me, Im about 180lbs. My tires PSI Front 28 Rear 30 |
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April 13th, 2010, 08:18 PM | #13 |
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Hehe, yeah... I remember that. Incidentally I've got a Ford with Firestone A/T tires on it at the moment, wonder if I should go check 'em
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May 21st, 2010, 02:16 AM | #14 |
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I've been checking my tire pressures once a week-fortnight, and I've noticed something that has got me quite disturbed. My rear tire goes from 32 psi to 17-20 psi whereas my front goes from 30 psi to 24-26 psi. I was just wondering if the drop in pressure from my rear tire was normal?
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May 21st, 2010, 03:03 AM | #15 |
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Not normal. Something going on with that tire, either a leak somewhere near the tire surface, or perhaps a bad tire valve.
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May 21st, 2010, 04:01 AM | #16 |
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I assume there is only 1 fix, buy a new tire?
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May 21st, 2010, 04:56 AM | #17 |
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If the tire is bad, yes...
But it could be the valve stem leaking, in which case your tire is good. |
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May 21st, 2010, 08:14 PM | #18 |
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If my valve stem was leaking, can this be fixed?
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May 21st, 2010, 08:21 PM | #19 |
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Yup, they are cheap as heck and are often replaced every two or three tire changes anyhow. First thing to do is find where the leak is coming from.
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May 21st, 2010, 09:03 PM | #20 |
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where is the leak? If from the center portion of the stem, you can easily change the valve stem core with a new one and it should fix the problem.
If this is the problem, do you use valve stem covers/caps? If not, I highly recommend you do. This could very well be causing you your problems if you're not. |
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May 21st, 2010, 09:24 PM | #21 |
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I don't know where my tire is leaking, I do have a couple of small indentations on my centre tire surface that could be the cause. I do use valve stem caps, but I might change them to see if it affects it somehow. Ill try take a couple of pics of what small indentations Im talking about.
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May 21st, 2010, 09:30 PM | #22 |
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I set my tires to 30 front and 32 rear. The front feels a bit soft if I don't set it higher and the rear seems to give me enough traction at that pressure and should keep tire wear at bay.
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May 21st, 2010, 09:33 PM | #23 | |
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Quote:
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May 21st, 2010, 09:40 PM | #24 |
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Yeah I'll try it out now, but here are a couple of pics of the indentations on my tire. Sorry for the crappy quality, phone camera was used.
Is there anywhere where I can find out how to remove and replace valve stem caps?
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May 21st, 2010, 09:50 PM | #25 |
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Okay I found the leak, its coming from the exact same indentation pictured above. I checked all the other indentations but they were fine. Is there another way to fix this apart from buying a new tire?
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May 21st, 2010, 09:53 PM | #26 |
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Go to your local auto parts store and get get a valve core remover, and a new valve core. The remover is like a screwdriver with a special tip. You just stick it on the valve core and turn it counterclockwise and unscrew it.
Just remember, removing the valve will LET ALL THE AIR OUT OF THE TIRE!!! Have the bike up on rear stands before you do this. EDIT: For a puncture in the tire, you can usually plug it. I wouldn't trust a tire plug on a motorcycle myself....
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May 22nd, 2010, 01:36 PM | #27 |
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That type of puncture looks like new tire time to me. I'm fine with plugging nail/screw holes, but that looks like a cut from a larger piece of debris.
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May 22nd, 2010, 01:40 PM | #28 |
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plug it for now (have someone very experienced at plugging tires do the work) and start shopping for a new set of tires. You wanted to get rid of those IRCs anyway, right?
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May 22nd, 2010, 08:12 PM | #29 |
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Would love to get rid of these IRCs but tires down here cost an arm and a leg. Will internally plug it for now at the shops and start looking around I guess.
If only there were people getting rid of some used tires down here
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May 23rd, 2010, 11:53 PM | #30 |
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Took it to the shop this morning to get it plugged, came back after Uni to pick it up and guess what ... the guy said there wasn't a leak. It was perfect, he did everything to check, put the tire in a crate of water, pumped it to 40 psi and left it for 2 hours to see if the pressure would drop, nothing. He was nice enough to do this all for free, but I seriously don't know now ... I'm going to check my pressures every few days for a while to suss it out.
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May 24th, 2010, 12:58 AM | #31 | ||
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Quote:
Quote:
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May 24th, 2010, 12:59 AM | #32 |
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2 methods.
1. Soapy water over the area 2. My spit over the area Both times they were bubbling and showed signs of a leak. EDIT: Let me make it more clear, the first time I would soapy water over the area, I could see bubbles forming and getting bigger, same with my spit.
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