ATV Florida Forum

General => Tech Corner => Topic started by: bigwake on September 13, 2007, 10:42:44 PM



Title: tire pressure????
Post by: bigwake on September 13, 2007, 10:42:44 PM
i just got an 04 ltz400..what psi should i put in the tires? front and back? thanx


Title: Re: tire pressure????
Post by: TRX450R_Racer on September 14, 2007, 08:40:12 AM
5 to 6lbs front

4 1/2 to 5 rear  for trail riding and XC racing

I don't know what the MX guys run, but I would think it would be more.


Title: Re: tire pressure????
Post by: bigwake on September 14, 2007, 09:29:17 AM
ok thanx! i ride trails mostly..so this should help


Title: Re: tire pressure????
Post by: Fox17 on September 14, 2007, 11:06:39 AM
id go as low as it says you can. in the owners manual or on the tire or the caution signs on the bike. teh lower it is, the better hook up, better acceleration but you lose a lil top speed, and much softer ride. in our ranchers, we have them around 3-4. i think its 3.6.


Title: Re: tire pressure????
Post by: TRX450R_Racer on September 14, 2007, 11:31:42 AM
I wouldn't go below 4.5lbs if you ride hard, unless you have beadlocks. You will end up popping a tire off of the bead.


Title: Re: tire pressure????
Post by: bigwake on September 14, 2007, 11:43:46 AM
well i dont have beadlocks..so i'll try 6 or so..it just seems right now when i ride down the street, the whole bike like rolls on the rims..like the tires are really low..but i haven't checked the pressure yet..and i dont have my manual yet either..thanx


Title: Re: tire pressure????
Post by: yfzOrlando on September 14, 2007, 12:13:47 PM
4 - 41/2 Max.!!


Title: Re: tire pressure????
Post by: svtbolt04 on September 18, 2007, 11:29:49 PM
You bought a z400 and a banshee?

You can run 5.5 lbs in the front, 5 in the rear. Good combo.


Title: Re: tire pressure????
Post by: bigwake on September 19, 2007, 10:53:12 AM
ya..i got em for good deals..for my dad and i to ride..we've had the 2 wheelers but with all the rain..mud and crap..we just need 4 wheelers..i hate to see my 2003 yz450f go for sale but i got to


Title: Re: tire pressure????
Post by: CountryBoy on September 19, 2007, 10:17:03 PM
For MX which i ride, ill put anywhere from 7-10 ibs in the rear and anywhere from 10-14 in the front. On muddy nights ill put less.


Title: Re: tire pressure????
Post by: dirtyrooster on October 01, 2007, 12:38:12 PM
I wouldn't go below 4.5lbs if you ride hard, unless you have beadlocks. You will end up popping a tire off of the bead.
Man have I been there. someone suggested I run 8 lbs up front.


Title: Re: tire pressure????
Post by: TRX450R_Racer on October 01, 2007, 01:00:59 PM
I wouldn't go below 4.5lbs if you ride hard, unless you have beadlocks. You will end up popping a tire off of the bead.
Man have I been there. someone suggested I run 8 lbs up front.

8lbs is too much. I wouldn't run over 6lbs for woods/XC.


Title: Re: tire pressure????
Post by: UncleRico on October 03, 2007, 09:30:27 PM
I use a complex equation for freestyle which takes into account the riders weight, the bike, the landing surface, the humidity, ambient temperature, and amount of stickers on your fender flares. It's really simple once you plug in all the variables.

Basically...

                   x =  –b ±√(b2 – 4ac) /2a + x2 = bx + c/(y+3) x = 3√(d/2 + √e) + 3√(d/2 – √e)

... will get you the exact pressure that you need down to the last molecule.





 


Title: Re: tire pressure????
Post by: bigwake on October 03, 2007, 10:29:03 PM
HA...........got any jokes that aren't extremely lame? :'( :'( :'( :'( :'( :'( :'( :'( :'( :'( :'( :'( :'( :'( :'( :'( :'( :'( :'( :'( :'( :'( :'( :'(


Title: Re: tire pressure????
Post by: predatorracer8 on October 21, 2007, 08:32:45 PM
I use a complex equation for freestyle which takes into account the riders weight, the bike, the landing surface, the humidity, ambient temperature, and amount of stickers on your fender flares. It's really simple once you plug in all the variables.

Basically...

                   x =  –b ±√(b2 – 4ac) /2a + x2 = bx + c/(y+3) x = 3√(d/2 + √e) + 3√(d/2 – √e)

... will get you the exact pressure that you need down to the last molecule.


oh look its uncle rico the physicist!!!!!!!!!!!!! :o :o :o :o




 



Title: Re: tire pressure????
Post by: FoxHondaRider on October 21, 2007, 08:47:19 PM
it all depends on what your doing.  If you want to slide around turns like a drift I suggest a higher PSI.  For getting traction, lower PSI.


Title: Re: tire pressure????
Post by: bigwake on October 21, 2007, 10:42:47 PM
yep i figured it out thanx