Can I get wider tires on stock wheels? - Yamaha Grizzly ATV Forum
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post #1 of 12 Old 01-31-2011, 12:12 AM Thread Starter
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Question Can I get wider tires on stock wheels?

My Kodiak is a bit tippy as it is.. I really don't think I want taller tires as I don't get into mud or rock crawling, mostly trails.. (poor ATV is so stock that it hurts, working on that...)

Can I mount wider tires on the stock wheels or do I have to buy wheels?


2005 Yamaha Kodiak 400 IRS
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post #2 of 12 Old 01-31-2011, 12:20 AM
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Sounds like you either need wheel spacers or new off set wheels to help with the tippy problem....

THERE WILL ALWAYS BE A YAMAHA IN MY SHOP!!!!!!!! and the womans Popo RZR.....

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post #3 of 12 Old 01-31-2011, 12:41 AM
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X2 on the spacers... that's a pretty cheap and easy way to fix a tippy bike.
Also - try adjusting the preloads on your shocks (the little silver notched rings on the bottom of the shocks). They are set from the factory (like just about everything on your bike) for "generic rider" settings. Not everyone rides the same or is built the same, so they SHOULD be adjusted.
BUT.. adjust them a notch at a time on the front or back FIRST to get used to how they feel. Set the front, drive it, set the back, drive it, adjust as neccesary. Don't just change the thing all the way around all at once as it will feel very different.
VERY generally speaking, setting it on the stiffest setting up front will cause the bike to turn less sharp ("push" as they call it in the NASCAR world), but it should keep the wheels on the ground better. Setting it stiff in the back will generally keep the weight forward as you accelerate OUT of the turn.
It's something not too many people mess with, but should!

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post #4 of 12 Old 01-31-2011, 01:56 AM
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X2 wheel spacers

2003 Grizzly 660 came with new 26" BKT Wing tires ($2300 craigslist)
1" wheel spacers ($78 ebay)
Yamaha Overfenders ($92 ebay)
3500 lb Viper Max Winch + Amsteal rope ($185 +$44)
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New rear pinion housing +Seal ($54.00)

New right rear axle shaft ($49 cvman)
Alba Steering stabilizer/damper(Cost $98)

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post #5 of 12 Old 02-02-2011, 11:39 PM Thread Starter
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Spacers eh.. I'll search/research for options


2005 Yamaha Kodiak 400 IRS
We're all in the gutter, but some of us are looking at the stars.
-Oscar Wilde
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post #6 of 12 Old 02-03-2011, 03:58 AM
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I think you will have to check this out from a good tire installer, because he knows on what kind of wheels which tires fits best.
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post #7 of 12 Old 02-03-2011, 06:43 AM
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My stock rims are for 25 x 8-12 and 25 x 10-12 and i put mudwisers 27 x 10-12 and 27 x 12-12 on them and havent had any issues with them
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post #8 of 12 Old 02-03-2011, 09:26 AM
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JaredL, Are the stock rims the SAME size front and back? I see some guys running less than 700cc are using 25x10x12's on all corners. Do you have to get new stock back rims for the front on 10 wide or just use the factory rims your machine came with? What advantages are there for 10 wide in front over 8 wide? What is performance difference on cornering, steering or any disadvantage? I run a GRIZ 550 EPS. Can you clue me in on the 25x10x12's on all corners?
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post #9 of 12 Old 02-03-2011, 10:43 AM
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I'm new at this but youmight air down your tires. I run 4-5 lbs in my Bruin. Bruin Blue
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post #10 of 12 Old 02-03-2011, 03:45 PM
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im still using my stock rims front 8-12 with 27x10-12 tire and stock back 10-12 with 27x12-12 tire if you get 10-12 tire will fit on a 8-12 rim so you can still use your stock rims. i never paid any attention on cornering only trail riding i do is to the next mud hole. only time i have a problem with steering is when im at dead stop and want to make a tight turn but once i get moving they steer fine buddy of mine has 700 with eps and has 27x10-12 on the front with that power steering it turns with no problems at all only disadvantage i saw with same size on all corners was in the mud. rode with a guy once that had 27x12-12 all around and when he would get in the ruts the front tires would make the same size rut as the back so the back tires would have nothing to grab on to
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post #11 of 12 Old 03-15-2011, 03:42 AM
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2012 Grizzly 700 w/EPS
27" ITP 589s on 14" MSA M15 Crushers
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post #12 of 12 Old 03-15-2011, 03:05 PM
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I'm using stock rims (which are a steel 12x7.5 rear, 12x6 front - same for the 400, and pretty sure all the Grizz's) and have put 25x10x12 bear claws on the fronts with 1" spacers, and 25x12.5x12 bear claws on the rear (no spacers). With the 450 it's way more stable than it was (not that it was very tippy to begin with - the 450's are pretty stable to start), and has less roll in than it used to. That pushes the tires out about 1-1.5" past the stock fender lip, but not enough that I eat mud all the time while riding. My Garage shows the visuals and it works fairly well.

Dave G

2006 Kodiak 450, Mad Mike's mod #2, #3 w/ 1mm shim, Modquad Raptor 660 extended throttle lever, 2"-ish CFM lift, Full Aluminum Products skid plating, ATVmods 2" SS exhaust tip, Kenda Bear Claws - 25x12.5x12 rears and 25x10x12 fronts
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Last edited by Rockfrog; 03-15-2011 at 03:08 PM.
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