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Tractor Talk Discussion Forum

my stupid question for the day

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PJBROWN

12-18-2006 08:51:27




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Could someone tell me about Radial tires for farm tractors ?? I don't own a tractor with them on it ,but are they better?? And why did they make them? Do they cost more??




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iowa_tire_guy

12-18-2006 15:52:02




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 Re: my stupid question for the day in reply to PJBROWN, 12-18-2006 08:51:27  
It is a matter of application. The rule of thumb is that between 120 and 140 horsepower tractor it is debatable if they worth the expense. Then I look at what the tractor will be used for. The main benefit of radial is that it can be used at a lower pressure making a larger footprint, up to 40% more. There are some conditions to running lower pressure though mostly being the weight of the axle. I have seen good radial tires ruined because they were run too low pressure for the weight of the axle. Here is one reason not to run any kind of tire ballast in radials, you increase the weight of the axle so you can't run low pressure and which means you have a bias tire at a radial price. (The other reason not to run fluid is that it prevents the sidewall from flexing making it act like a bias tire at a radial price.) The downfall of running low tire pressure is that it makes the tire act funny such as weaving down the road or hop in the field or road. Think running tires real soft on your car or truck. These problems are usually corrected by adding air which takes away footprint with is why you bought the radial. So a radial tire works really good in a 140 plus horse field tractor when it is in the field. Most of the rest of time put on bias.

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IH2444

12-18-2006 11:13:02




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 Re: my stupid question for the day in reply to PJBROWN, 12-18-2006 08:51:27  
Radials took 2 minutes off the quarter mile time for my tractor. I noticed a bit more roll on the salom course though.



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old

12-18-2006 09:44:03




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 Re: my stupid question for the day in reply to PJBROWN, 12-18-2006 08:51:27  
Think about it this way. Cars/trucks usto use bias tires on them years ago and the reason they went to radials was improved handleing, traction and better gas mileage. Some things hold true on a tractor but it just took time for it to catch on/up for tractor useage. They will also stand up better for things like going though places with thorns etc. And yes they cost more but that was also true when they came out to be used on cars/trucks

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JMS/MN

12-18-2006 09:10:41




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 Re: my stupid question for the day in reply to PJBROWN, 12-18-2006 08:51:27  
Not much benefit for a yard tractor, but I've used them on several field tractors since the early 80s. Much better traction, better cleaning of the lugs in mud (had radial inside, bias dual...really showed the difference in cleaning). If using tubes, they must also be radial, otherwise the extra flexing rips the tube to shreds. Increased traction comes from bigger footprint from how they flex. Cost more, but the difference has shrunk over the years.

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Kelly Campbell

12-18-2006 08:58:56




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 Re: my stupid question for the day in reply to PJBROWN, 12-18-2006 08:51:27  
I think really its a cost benefit thing, you can run with lower tire pressure than conventional tires, there is no need for tubes, however you can not put calcium in them, a lot of people put racing methanol instead (better on the rims), they do I believe cost more, but don"t hold me to that.



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RustyFarmall

12-18-2006 08:57:41




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 Re: my stupid question for the day in reply to PJBROWN, 12-18-2006 08:51:27  
Supposedly the radials offer superior traction. they are considerably more costly. Some folks like them, some despise them.



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