Front and Rear Tire Pressures

Got questions? We got answers....
Post Reply
Byte
Member
Posts: 235
Joined: 04:47 pm Mar 19 2009
Country:

Front and Rear Tire Pressures

Post by Byte »

Both my tires have gone flat over long periods of non-use.

What should Front and Rear Tire Pressures be in this KDX220?

MAXXIS tires used.

ANd, spec says 0.7L but how much gear box oil is ideal in the case?

Byte
KarlP
Supporting Member III
Supporting Member III
Posts: 1484
Joined: 02:26 pm Jun 29 2005
Country:
Location: Alabama

Post by KarlP »

You can use the full quart of gear box oil. It'll be fine.
The choice of oil has been discussed a few times.

I run 8.5 psi rear and 9 front. I'm not telling you to do that, because I've been told over and over that I'm going to get a flat. Maybe one year, if I do get a flat, I'll change my ways. A lot of people run ~12 psi. I find that too hard and slippery. 15 psi is like riding on ice, to me. A lot depends on your riding area.
You do need a good gauge to read motorcycle tire pressure. Most standard tire gauges don't read very well that low.

You asked earlier about the fuel petcock- handle pointing down is fuel on.

You also mentioned your exhaust not sealing up into the cylinder well, you thought. That is an easy fix. Look around on here, I think someone else just went 'round the block on that. Not sealing should not effect compression when kicking, though. You sure you put your sparkplug back in? :grin:
'08 KTM200xc
'99 CR/KDX Hybrid with that RB stuff done to it
KX100 for the boy
plb
Member
Posts: 162
Joined: 07:59 am Aug 24 2007
Country:
Location: Québec, Canada

Post by plb »

Tire preasure:

It'a personnal choice, but for me, it's 11 for the front and 14 for the rear.
User avatar
MXOldtimer
Member
Posts: 575
Joined: 05:03 pm Jul 15 2006
Country:
Location: Pacific NorthWET, Oregon

Post by MXOldtimer »

>|<>QBB<
plb wrote:Tire pressure:

It'a personnal choice, but for me, it's 11 for the front and 14 for the rear.
Yeah, I run 12 in the front and 8 in the rear and if I know it's gonna be rocky I'll up the front a couple pounds.
04 KX-250 Hey.....at least it's green and smokes.
06 KDX-200 for off road play. Gone but not forgotten
07 KX-250F SOLD! I thump no more.
User avatar
Mr. Wibbens
KDXRider.net
KDXRider.net
Posts: 4884
Joined: 02:57 am Nov 07 2004
Country:
Location: Playing in the Poison Oak
Contact:

Post by Mr. Wibbens »

12 psi front and rear

Always rocks here
Warning! This member tends to use sarcasm as a regular form of communication. If a post seems offensive, before you panic and fly off the handle, re-read the post and imagine it being said with a sideways grin.
((Bike Profile))
((Pics))
FIVE OUT OF FOUR PEOPLE DONUT UNDERSTAND FRACTIONS
User avatar
kdxquebec
Supporting Member II
Supporting Member II
Posts: 1255
Joined: 07:18 am Nov 24 2004
Country:
Location: Québec:North Pole
Contact:

Re: Front and Rear Tire Pressures

Post by kdxquebec »

>|<>QBB<
Byte wrote:Both my tires have gone flat over long periods of non-use.
A week? a month?

Remove the spring valve assy in your tubes and clean them maybe they are dirty. Then put 30psi on both tires and let them sit overnight. When the morning come...go in the garage for a check. (if you have not slept in the garage)

Take the result. And decide if your tubes are junk or not.
'89 KDX 198cc '03 Gasgas Ec250 '13 Husaberg Te300
*CANADA* LEADING THE WORLD IN BEING JUST NORTH OF THE UNITED STATES.
Image
User avatar
canyncarvr
Gold Member
Gold Member
Posts: 6943
Joined: 01:07 pm Nov 05 2004
Country: US
Location: The Mythical State of Jefferson

Post by canyncarvr »

Re: 'Both my tires have gone flat over long periods of non-use.'

Not uncommon for tubed tires..and certain to happen if you use natural rubber tubes over butyl.

Consider the source
Using a perceived level of knowledge to boost my self worth.
Non impediti ratione cogitationis

bike profile: !clicky!
User avatar
SS109
KDXRider.net
KDXRider.net
Posts: 5770
Joined: 05:11 am Aug 23 2009
Country: USA
Location: Tucson, AZ, USA
Contact:

Post by SS109 »

12 front, 10 rear.
Youtube Channel: WildAzzRacing
AZ State Parks & Trails OHV Ambassador - Trail Riders of Southern AZ
Current KDX: '98 KDX220
Old KDX: '90 KDX200 -White/Blue
'11 GasGas EC250R
Byte
Member
Posts: 235
Joined: 04:47 pm Mar 19 2009
Country:

Post by Byte »

great replies - thanks guys.

Byte
User avatar
Julien D
KDXRider.net
KDXRider.net
Posts: 5858
Joined: 07:53 pm Nov 07 2008
Country: USA
Contact:

Post by Julien D »

I run 12 up front and 7-9 out back depending on conditions. I have a trials tire out back though, that does make a difference.....
Image
User avatar
Indawoods
Creator and Founder
Creator and Founder
Posts: 9951
Joined: 09:59 am Jun 12 2003
Country:
Location: Midwest

Post by Indawoods »

Mine works best flat.... I have proven this. :cool:
*** Administrator //***
****'95 KDX 200/****

"People ate cows a thousand years ago for the same reason we eat them now. Cause they are easy to catch.We're not savages,we're just lazy. A cheetah could taste like chocolate heroin. But will never know. Those bastards are fast!!! "
User avatar
Varmint
KDXRider.net
KDXRider.net
Posts: 823
Joined: 01:33 pm Oct 27 2008
Country:
Location: Bristol, Connecticut
Contact:

Post by Varmint »

I just rode 28 miles of rocks, mud, roots and leaves and had some of the best performance ever running 8 and 7 :shock: . Of course I checked the pressure right after getting off the trail, so I may have had a lucky day. I would normally run 12/10, but man low pressure kicks arse in the nasty stuff.
Last edited by Varmint on 07:45 pm Oct 14 2009, edited 1 time in total.
In my garage
2003 KDX200
2003 KX85
2005 CRF230F
2009 300 XC-W(e)
My KDX
User avatar
kawagumby
Gold Member
Gold Member
Posts: 927
Joined: 10:09 am Nov 30 2006
Country:
Location: California

Post by kawagumby »

Lots of big square-edged holes where I ride, I need to run at least 13 front and rear or my tubes get pinched, and that's with heavy-duty enduro tubes.
1994 KDX200, Beta 200rr, yz125, yz250, kx100 modded for adult, gasgas contact 250.
User avatar
fuzzy
KDXRider.net
KDXRider.net
Posts: 3437
Joined: 01:29 pm Jun 18 2003
Country:
Location: Fredneck, MD

Post by fuzzy »

Mine works best flat.... I have proven this.
LOL, yeah I loved my Maxxis at 2psi.
'91 KDX 200 Project $300 KDX
'95 KDX 200 Project $600 KDX
'94 WR 250 Always a project
Post Reply