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Pros and cons of going to 26X12X12 tires?


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#1 KennyP ONLINE  

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Posted May 07, 2011 - 07:31 AM

I will have a pair of 26X12 tires soon and will put them on either a GTV/16 Sears or my LGT 165 Ford. Neither tractors has a working mower and whichever I put them on will get 18X6.50X8 on the front. Besides increasing ground clearance, is there anything else I should be concerned about? Wheel width is 7 or 7.5" right now. How about the Ford tiller? Any problems with getting it deep enough and the u-joints on the shaft. I am aware of tire width and the furrow of the plow. Give me a little guidance here folks.

#2 caseguy OFFLINE  

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Posted May 07, 2011 - 07:52 PM

I'm not a tire expert by any stretch, but that seems like a big disparity between the wheel width and the tire width to me. Let us know how they look when you get them mounted...better yet, post some pics!
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#3 wvbuzzmaster OFFLINE  

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Posted May 07, 2011 - 07:56 PM

You WILL NEED wider wheels. At least 12x8.5 wide rims are necessary for the 26x12-12 tires. Even better yet are a 12x10 wide rim, I seen some of those on ebay for sale.

#4 wvbuzzmaster OFFLINE  

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Posted May 07, 2011 - 07:59 PM

I will find you a link as soon as my auction I am bidding on ends here in about 10 minutes.

#5 wvbuzzmaster OFFLINE  

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Posted May 07, 2011 - 08:19 PM

Here is what you will want:
12" 12x10.5 5x4.5 Riding Lawn Mower Equipment RIM Wheel | eBay
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#6 KennyP ONLINE  

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Posted May 08, 2011 - 12:13 AM

Thanks,guys. I was afraid the wheel width would be a problem. I'll have to check the wheels I have to the specs for the wide ones. The Ford and Sears have different offsets and the Ford may have a larger center hole. Thought about widening the wheels I use myself, just getting them straight would be fun. LOL

#7 JDBrian OFFLINE  

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Posted May 08, 2011 - 06:56 AM

When you increase the wheel diameter you will increase your speed and decrease your torque/power. This may not be an issue as traction may be more important than actual torque. Will the wider rims and taller tires clear the fenders/frame, mower deck, 3pt hitch arms etc? The rim is about 3"wider but they usually have an offset so they can be installed for wide or narrow width.
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#8 KennyP ONLINE  

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Posted May 08, 2011 - 07:06 AM

When you increase the wheel diameter you will increase your speed and decrease your torque/power. This may not be an issue as traction may be more important than actual torque. Will the wider rims and taller tires clear the fenders/frame, mower deck, 3pt hitch arms etc? The rim is about 3"wider but they usually have an offset so they can be installed for wide or narrow width.

Neither tractor has a mower deck, both are sleeve hitch. Ford definitely has the fender clearance. Added width would go outward, so no issues with inner sidewall clearance.

#9 olcowhand ONLINE  

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Posted May 08, 2011 - 07:52 AM

Not sure on the Sears, but definitely should work well with the Ford. With the Ford having the 2 speed rear, the increased speed factor of taller tires won't hurt anything at all. The Low in the Ford can handle them with ease. You do need wider rims definitely. All mine are mounted on 10.5" wide rims and I wouldn't want to mount them on anything less than 10" wide. Be sure that the 18's on the front won't hit the frame in a full lock turn.
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#10 IamSherwood OFFLINE  

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Posted May 08, 2011 - 08:06 AM

Con: Getting use to making wider sweeping turns so you don't hit stuff with those big bad boys.:D

Pro: Getting to spend time looking for a picture after you name her. (like Katy):D
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#11 MH81 ONLINE  

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Posted May 08, 2011 - 08:14 AM

Pro: Getting to spend time looking for a picture after you name her. (like Katy):D


:rofl2: I need to find some bigger tires... Lol

#12 KennyP ONLINE  

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Posted May 08, 2011 - 05:11 PM

Looked at the sears today. Plenty of upper clearance for these tires. Remember guys, this is a variable speed drive with Onan power, 18 horse. Hate to put them on the Ford cause of the plow. May go on the GTV/16(GTV/18) and use the ground clearance for a mid-mount blade.

#13 olcowhand ONLINE  

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Posted May 08, 2011 - 06:02 PM

Kenny, I use a 10" Brinly plow with my 26x12x12's.....not a problem at all!
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#14 ducky OFFLINE  

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Posted May 08, 2011 - 06:17 PM

Kenny, I use a 10" Brinly plow with my 26x12x12's.....not a problem at all!

Same here Kenny.
Not a problem.
Have a local machine shop roll you a circle of steel and cut your own rim with ti mounted on the tractor to mark it true.
Then cut measure twice and weld to the inside of the rim smooth weld with a grinder and coat welds with RTV to seal and smooth if you are going to use a tube.
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#15 KennyP ONLINE  

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Posted May 08, 2011 - 06:26 PM

Ducky, that is what I was trying to figure out. Now to find the machine shop. LOL I have several ideas on how to keep it true. Course, a little run out at these speeds won't hurt. At least, I have plenty of info from everyone on this. Thanks everyone for pitching in.




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