Tire sizes question - Polaris ATV Forum
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post #1 of 8 (permalink) Old 08-17-2019, 01:17 PM Thread Starter
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Tire sizes question

Alright guys, I have a 2019 Sportsman 850 SP and going to upgrade the tires next spring from stock. I’m getting a Clutch kit from RVS at the same for 27”-28” tires. I really like the look of STI Outback Max tires but they only come in 27”x10”x14” for what I’m looking for. My question is what does having the same tire size on all 4 corners effect driving and such compared to say a 27x9x14 and 27x11x14? If I didn’t go with the STIs I’d prolly go with some ITP XTRs in the latter size.
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post #2 of 8 (permalink) Old 08-17-2019, 01:52 PM
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Apparently Polaris doesn’t have a problem. The 2020 Sportsman XP 1000 S has 27” Duro Powergrip V2 Tires on all four corners.
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Last edited by Sprotsman; 08-17-2019 at 01:57 PM.
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post #3 of 8 (permalink) Old 08-17-2019, 02:11 PM
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Actually it’s the 2020 Scrambler XP 1000 S that has 27 x 9 Duro PowerGrip II on all four corners. My mistake. I actually am intrigued by the same on all four corners and may try it in the future.
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post #4 of 8 (permalink) Old 08-17-2019, 04:01 PM Thread Starter
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I guess what my real question is what is the pros and cons of tires all same size? Lol
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post #5 of 8 (permalink) Old 08-17-2019, 04:02 PM
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Well IMHO the negative side of a wide front is floating felling in the steering. Clearance issues. Weight and all the added problems that brings about. Steering isn't as precise. The tire being bigger gets hung up more on trail obstacles, grabs to much crap. I'm a skinny front fat in the back kinda guy , lol. But if I had to choose it would be skinny on all four corners over wide on all four.

2011 Sportsman® 800 EFI
GURU front brush guard
GURU rear brush guard
Polaris front lock n ride cargo box
Polaris rear rack extender
Warn RT 3.0 winch w/amsteel synthetic line
Viper aluminum haus fairlead
Polaris front spring adjusters
Ricochet a-arm guards
Ricochet full frame skid plate
ITP T-7 beadlock 14" w/OMF inner rim guards
Maxxis big horn 2.0 26x9 front
Maxxis big horn 2.0 26x11 rear
QSC clutch kit
EPI HD springs front n rear
ODI rogue 130mm grips
Ultraseal commercial grade tire sealant (front)
Highlifter tire sealant (rear)
CTEK 3300 battery maintainer
added 7 zerks
beefed up wiring harness
OGIO rear bag
ROTOPAX 1gal. + 2gal. gasoline can
Jccapri bushing kit
Kolpin Over Fenders
Rigid Industries E-Series 10" flood
Walker Evans struts
NGK Iridium's (2,500 miles on Champion's and they looked great!)
Odyssey Extreme battery PC545

2018 Sportsman® 570-T
2019 Aluma® A8818
2020 Outlander® 1000R XXC (on order, ETA mid-Sept)
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post #6 of 8 (permalink) Old 08-17-2019, 04:56 PM Thread Starter
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Quote:
Originally Posted by bp405 View Post
Well IMHO the negative side of a wide front is floating felling in the steering. Clearance issues. Weight and all the added problems that brings about. Steering isn't as precise. The tire being bigger gets hung up more on trail obstacles, grabs to much crap. I'm a skinny front fat in the back kinda guy [IMG class=inlineimg]https://www.polarisatvforums.com/forums/images/PolarisAtvForums_toucan/smilies/tango_face_devil.png[/IMG], lol. But if I had to choose it would be skinny on all four corners over wide on all four.
I was reading a little more about it and decided not to go that route as I would have to prolly buy new rims. I guess the stock 14” rims are 6” wide in the front and 7” in the back. So I’ll just stick with the 9” in front and 11” in rear lol.
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post #7 of 8 (permalink) Old 08-17-2019, 05:36 PM
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Unless you're doing a specific type of hardcore riding like mudding or GNCC I think 9 fronts and 11-12 rears are the way to go!!!

2011 Sportsman® 800 EFI
GURU front brush guard
GURU rear brush guard
Polaris front lock n ride cargo box
Polaris rear rack extender
Warn RT 3.0 winch w/amsteel synthetic line
Viper aluminum haus fairlead
Polaris front spring adjusters
Ricochet a-arm guards
Ricochet full frame skid plate
ITP T-7 beadlock 14" w/OMF inner rim guards
Maxxis big horn 2.0 26x9 front
Maxxis big horn 2.0 26x11 rear
QSC clutch kit
EPI HD springs front n rear
ODI rogue 130mm grips
Ultraseal commercial grade tire sealant (front)
Highlifter tire sealant (rear)
CTEK 3300 battery maintainer
added 7 zerks
beefed up wiring harness
OGIO rear bag
ROTOPAX 1gal. + 2gal. gasoline can
Jccapri bushing kit
Kolpin Over Fenders
Rigid Industries E-Series 10" flood
Walker Evans struts
NGK Iridium's (2,500 miles on Champion's and they looked great!)
Odyssey Extreme battery PC545

2018 Sportsman® 570-T
2019 Aluma® A8818
2020 Outlander® 1000R XXC (on order, ETA mid-Sept)
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post #8 of 8 (permalink) Old 08-17-2019, 06:09 PM
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Definitely skinny for all four. FWIW the Scrambler I mentioned uses 9” (skinny) all around. Having to buy new rear rims might keep me from that experiment also!!!
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