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08-30-2010, 06:21 PM
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Junior Member
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Member #6883
Join Date: Aug 2010
Location: Ontario, Canada
Posts: 7
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Upsized tires on 850XP now burning lots of fuel
So i have an 09 850 XP that is stock but i put on a set of 28" Interco Swamp Lites. No fitment issues they clear the sway bar and everything, barely but they do. But now the bike is burning double the fuel that it did with the stock 26's on it. Has anyone ever dound this when they built up the quad ?
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08-30-2010, 06:28 PM
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Extreme ATV Enthusiast
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Member #3684
Join Date: Mar 2010
Posts: 145
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Mine burns fuel on stock tires I can imagine that it would get worse. Not much you can do about it. I got some rotopax fuel cans. They come in real handy. You have to pay for all the power on the 850. The price comes in fuel usage.
__________________
2012 Sunset Red XP 850 HO EPS- Everything.....
2010 Sunset Red XP 850 EPS;6000K 55W HIDS, Deluxe front and rear brush guards, 3500lb winch, heated grips and thumb, front and rear rack extenders, polaris hand guards, (2) 2gal Rotopax, Lock and Ride Gun Boot, Lock and Ride Rear Cargo Box
2009 XP 550 Browning Edition- Stock
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08-30-2010, 06:31 PM
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Extreme ATV Enthusiast
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Member #962
Join Date: Jul 2009
Location: Lockport, Louisiana
Posts: 495
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I burn a little more with my XTR's but not too bad. Worth it for the improvement over the stock tires.
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2009 Polaris XP-850 w/EPS and 2500# Polaris winch, Lock and ride front cargo box, Front and rear rack extender's, Stealth Black, 27" Mudlite XTR's, Polaris deluxe brushguard's,XPOG #2 
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08-30-2010, 06:32 PM
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Junior Member
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Member #6883
Join Date: Aug 2010
Location: Ontario, Canada
Posts: 7
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Actually i found it really good on fuel before the bigger tires, i ride with a 750 Brute and an 800 RZR and used to be right with them fuel wise, could go about 140 KM gravel road riding before empty. But now its down to like 75 km just cruising back roads taking it easy
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08-30-2010, 06:41 PM
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Junior Member
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Member #6883
Join Date: Aug 2010
Location: Ontario, Canada
Posts: 7
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Should i change the clutching to make it easier on the engine to get up and rolling ? And if so what colour springs ?
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08-30-2010, 06:50 PM
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Polaris ATV Junkie!
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Member #2920
Join Date: Jan 2010
Location: York, PA
Posts: 869
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28s are huge. That's quite a bit of unsprung weight what you have to turn. Didn't think the KPG would be THAT BAD though.
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 - Polaris 3500 Winch
- Viking Hause Fairlead and Safety Thimble
- Elka Stage 1 Triple Rate Shocks with Rebound
- Front Lock n Ride Storage Box
- WES Lock and Ride Rear Touring Box
- Rotopax Front Storage Fuel Cells
- Hand Warmers
- Garmin GPSMap 62S
- 27" Grim Reapers
- 8000K HID Lights
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08-30-2010, 06:59 PM
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Junior Member
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Member #6883
Join Date: Aug 2010
Location: Ontario, Canada
Posts: 7
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i talked to the service manager at my local dealer and i really think hes as dumb as he looks. Didnt even believe me that my speedo was in km/h and not mp/h. And yeah i was shocked that it dropped that much i have to figure something out because i cant go very far riding like this. Everyone i ride with gets about 125 to 150 km per tank average riding
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08-30-2010, 08:50 PM
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Super Moderator
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Member #4866
Join Date: May 2010
Location: western new york
Posts: 878
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i havent noticed the difference with the new 28" zillas mostly cause i didnt really figure out how many miles with stock tires but i didnt lose that much
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2010 850 XP EPS Stealth Black
from dealer
2500lb. winch (with wireless remote)____60" Glacier® II Plow System with extras___Lock & Ride® Front Cargo Box____Rear Rack Extender___Moose hand and throttle warmers
HID Plug and Play Light Kit for 550/850(www.theatvsuperstore.com) lower lights tinted with 20% window tint (still brighter than stock but not blinding bright)
Front & Rear A-Arm Guards XP550/850 2010(www.theatvsuperstore.com)
28" zillas on stock 14" rims(http://www.4wheelparts.com)_____26" stock tires on itp ss212 14" thanks SNW629
Deluxe Front/Rear Brushguard(http://www.superatv.com/)
3 in 1 Polaris atv hitch from (www.theatvsuperstore.com) might i add it was a gift they sent me just for buying some stuff 
Galls® 100W Remote Siren (http://www.galls.com/)
lots of lights
motor cycle radio
(still to come Wes Standard(rear seat and storage), dalton clutch kit, 2 inch lift, stealth snorkel kit if they ever make them for the 2010 )
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08-31-2010, 04:26 AM
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Polaris ATV Junkie!
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Member #1414
Join Date: Sep 2009
Location: LOCKPORT NEW YORK
Posts: 654
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those 28x14 swamp lites are NOT lite,that is the problem. fronts are 29lbs and rear is 35lbs. there goes your mileage. you need a dalton clutch kit to help with that weight.
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2010 850XP EPS, 26" GBC SPARTACUS
2010 550XP EPS, 26" GBC SPARTACUS
09 850XP EPS
ITP XTR,STOCK WHEELS,1" SPACERS
RT30 WARN WITH KFI MOUNT
HMF SWAMP XL, SPIDER A3 GRIPS,FRONT CARGO BOX
DALTON CLUTCH KIT,NGK 6043 PLUGS,FENDER EXTENSIONS.
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08-31-2010, 06:05 PM
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Junior Member
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Member #6883
Join Date: Aug 2010
Location: Ontario, Canada
Posts: 7
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Thanks, i was actually looking at clutch kits today, just didnt know if i should go with the dalton or the EPI one that comes with the helix and everything. Which one would you guys recommend ?
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