Same here Dave. Only 3.75 rear and 4.25 in the front.DAVE wrote:is that the recomended psi??? what is the advantage to the higher psi. It is my understanding that the radials have less side wall flex than a bias tire. I am running 4 psi in my xtr radials........... seems about right.I run 6 PSI all the way around, and the ride is perfect.
DAVE
Maxxis Bighorns, any input?
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- MrBill
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04 500 HO SP w/ the RZR bling rims/tires and 2 03 Bomber GTX DI
- rangertom
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I've been runnin' 6, my bro-in-law runs his at 5 psi, and my dad-in-law runs 5 psi on his PXT's. I'm probably just being extra careful due to constanly hitting 4-6 inch rocks @ 40 mph on the trail and in the washes.
I have a couple of nice dents in my rims from those rocks...I just don't want any more.
I have a couple of nice dents in my rims from those rocks...I just don't want any more.
05 Magnum 330 4WD (wife's)
04 Sportsman 700 EFI (mine)
02 TRX90 (daughter's) (for sale to buy my daughter a Sportsman 90)
04 Sportsman 700 EFI (mine)
02 TRX90 (daughter's) (for sale to buy my daughter a Sportsman 90)
DAVE wrote:It is my understanding that the radials have less side wall flex than a bias tire.
DAVE
You have it backwards there skippy....Radials have MORE sidewall flex...usually too much for rocks. That's why they have to run higher airpressure, to compensate for the sidewall falling down.
Biasply, have a more solid sideway, allowing LESS pressure...with same tire height as a radial with MORE pressure.
The last words spoken before a YouTube video is filmed: "Hold my beer, now watch this..."
Regards,
Ken Hower
RTF Director
http://www.rubicontrail.org/
Regards,
Ken Hower
RTF Director
http://www.rubicontrail.org/
why are radials for atv's advertised as haveing a larger footprint with a more stable ride re: less roll??? isn't that side wall flex??You have it backwards there skippy....Radials have MORE sidewall flex...usually too much for rocks. That's why they have to run higher airpressure, to compensate for the sidewall falling down.
- rangertom
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The more the sidewall flex, the more footprint...that's it...I tell yah...with these bighorns the big beast doesn't feel as sporty...but definately more comfy to ride.DAVE wrote:why are radials for atv's advertised as haveing a larger footprint with a more stable ride re: less roll??? isn't that side wall flex??You have it backwards there skippy....Radials have MORE sidewall flex...usually too much for rocks. That's why they have to run higher airpressure, to compensate for the sidewall falling down.
05 Magnum 330 4WD (wife's)
04 Sportsman 700 EFI (mine)
02 TRX90 (daughter's) (for sale to buy my daughter a Sportsman 90)
04 Sportsman 700 EFI (mine)
02 TRX90 (daughter's) (for sale to buy my daughter a Sportsman 90)
Radials by design, have more "footprint" because the tread is able to lay flat because the sidewall is not part of the tread.
Bias Ply the side wall and tread are the same material. That's why you see Bias Ply with massive thread on the sidewall.
Notice the sidewall of Bias-ply is much thicker, because it has to support the whole tire. Whereas the radial is thinner and has more flexing, with the a larger footprint.
This is GREAT...for asphalt.
The same bias ply will be higher with lower pressure than a radial. On my jeep tires. I ran my Radials at 12PSI for rock crawling.....much harder ride and less gripping around the rocks. My Super Swamper TSX Bias Ply's....I run them at 9 PSI and they are nearly the same tire height as with full pressure.
I could run them lower.....but the tire would start to lose height. With bead lockers...you can run Bias ply tires on my Jeep at 5PSI...easy.
Bias Ply the side wall and tread are the same material. That's why you see Bias Ply with massive thread on the sidewall.
Notice the sidewall of Bias-ply is much thicker, because it has to support the whole tire. Whereas the radial is thinner and has more flexing, with the a larger footprint.
This is GREAT...for asphalt.
The same bias ply will be higher with lower pressure than a radial. On my jeep tires. I ran my Radials at 12PSI for rock crawling.....much harder ride and less gripping around the rocks. My Super Swamper TSX Bias Ply's....I run them at 9 PSI and they are nearly the same tire height as with full pressure.
I could run them lower.....but the tire would start to lose height. With bead lockers...you can run Bias ply tires on my Jeep at 5PSI...easy.
The last words spoken before a YouTube video is filmed: "Hold my beer, now watch this..."
Regards,
Ken Hower
RTF Director
http://www.rubicontrail.org/
Regards,
Ken Hower
RTF Director
http://www.rubicontrail.org/
- oldtrucks
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The more I ride mine the more I'm thinking of getting rid of my Carlisle XTR's. I got the XTR's for trail riding, figuring the Bighorns would be too heavy, but the don't seem to slow the quad any and handle well in all terrain.
Larry (ATV Ansel)
Finding Beauty in Negative Spaces
[url=http://www.offroadobsession.com/store]Offroad Obsession[/url]
[url=http://www.rallyontherocks.com]Rally on the Rocks![/url]
Finding Beauty in Negative Spaces
[url=http://www.offroadobsession.com/store]Offroad Obsession[/url]
[url=http://www.rallyontherocks.com]Rally on the Rocks![/url]
- oldtrucks
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The one thing I did notice was their ability to bury themselves in soft soil/sand. If I got too aggresive with the throttle at low speeds in 2wd I could easily bury the rear. By then 4wd just added to the problem and pulled the front down with the back.
Larry (ATV Ansel)
Finding Beauty in Negative Spaces
[url=http://www.offroadobsession.com/store]Offroad Obsession[/url]
[url=http://www.rallyontherocks.com]Rally on the Rocks![/url]
Finding Beauty in Negative Spaces
[url=http://www.offroadobsession.com/store]Offroad Obsession[/url]
[url=http://www.rallyontherocks.com]Rally on the Rocks![/url]
oldtrucks wrote:The one thing I did notice was their ability to bury themselves in soft soil/sand. If I got too aggresive with the throttle at low speeds in 2wd I could easily bury the rear. By then 4wd just added to the problem and pulled the front down with the back.
That's where the Polaris automatic locker kicks in...BEFORE you bury the rear tire.
When will these Zuki owners figure it out??
The last words spoken before a YouTube video is filmed: "Hold my beer, now watch this..."
Regards,
Ken Hower
RTF Director
http://www.rubicontrail.org/
Regards,
Ken Hower
RTF Director
http://www.rubicontrail.org/
- oldtrucks
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550 miles, including two trips to the desert and 3 snow rides. The rear are just starting to show a little wear, about 1/16", which is actually good news to me. I'd heard they wore like iron, so I figured they would be way too hard a compound for rocks. I think I've had them in almost every situation and I'm very pleased. They aren't supposed to be good in the mud, but they work great, even clean out very well. I ran through some of the slimiest sticky mud up in the Black Rock desert and they worked great. I punished them one day during the Mina ride and they came away unharmed.
Larry (ATV Ansel)
Finding Beauty in Negative Spaces
[url=http://www.offroadobsession.com/store]Offroad Obsession[/url]
[url=http://www.rallyontherocks.com]Rally on the Rocks![/url]
Finding Beauty in Negative Spaces
[url=http://www.offroadobsession.com/store]Offroad Obsession[/url]
[url=http://www.rallyontherocks.com]Rally on the Rocks![/url]
- Mr. Miyagi
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Unless of course your Ken.... and bury all four in the snow....That's where the Polaris automatic locker kicks in...BEFORE you bury the rear tire.
Funny thing is.... I found about three others of Ken buried up to the frame and they weren't even the photos I was originally looking for.... lol.
How about.... GAS OFF..... Hello!!!
05' Polaris Sportsman 800 EFI, 2.5 warn winch, tool box, front grill, rear bumper, gas pack, Magellan Sportrak Pro GPS and Collett radio.
02' Polaris Sportsman 700, ITP 589 m/s, K&N air filter, Polaris front and rear bumpers.
02' Polaris Sportsman 700, ITP 589 m/s, K&N air filter, Polaris front and rear bumpers.
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