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TIRE FIT

(quoted from post at 09:29:58 02/08/20) Can I replace a 13.6-16 turf tire with a 12.4-16 AG tire on the same rim??
Thanks
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If it is on a 4x4 I would be a little leary....difference in circumference could be a problem.
 
(quoted from post at 10:18:03 02/08/20) would it help if I changed the front tires also to ag tires?? it is a 4x4
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It may be ok with turf tires on the front as the ratio may be close to the same, smaller tire will be less of a difference. I would measure circumference on what you have now for a reference, change the back tires and compare the ratio. If it is way off, figure out what size to change the fronts to.
 
Great Idea!!--I will measure the circumference of the rear and front turf tires--then check the ag tire circumference--if way off will get front ags and check the circumference ratio of old to new
i just hope the existing turf tires are original so i can assume they are correct
 
its not about turf its about circumference and rollout of a tire on a 4x4 it has to do with gear ratios ,one end pulling or pushing faster then the other
 
yes---as i said i will measure the circumferences of the turf tires and the ag tires---what percent difference do you think will be ok so the front and rear are not fighting each other??
 
Either your owner's manual or the dealer should be able to tell you what size front tires pair with what size rear tires.

It's not a percentage difference, it's a ratio of front-to-rear, either circumference or "loaded radius." You can get the circumference and loaded radius from the tire manufacturer's website.
 
I was thinking if the existing % differnce circumference from front to rear is duplicated with the new tires then the new tires will still have the same torque characteristics as the old?
 
(quoted from post at 11:19:09 02/08/20) I was thinking if the existing % differnce circumference from front to rear is duplicated with the new tires then the new tires will still have the same torque characteristics as the old?
Click to expand...

It appears to be a pretty small tractor, so ratio will probably not be that big of an issue unless you are using it in 4x4 on a hard surface.
 
I had a Ford Bronco with 4.10 ratio axles, and ended up with 4.56 on the back before the front got changed. On a sharp corner the ratios matched because the front wheel track was a bigger circle than the back. It was always used at low speed so heat buildup was never an issue. If the machine is built to withstand spinning on any surface then the mismatch should never destroy anything. Long term use while locked in 4wd would increase wear on the components and high speed use while locked in will have high torque and high speed at the same time which could cause drivetrain overheating.
 
Prime example of the need to ask a complete question. As stated, yes, you can generally go one size bigger or smaller on a rim without a problem, and you're going one size smaller. But you didn't mention that it was a 4 X 4- then it makes a LOT of difference, because of the need to keep the relative outside diameters of fronts and rears the same, so as not to tear up the drive train.
 
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