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Tractor Pulling Discussion Forum

Question for Discussion

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Thinking?

11-13-2003 04:39:14




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Have been pondering over putting 18.4 x 38 cuts on 22" rims. Would like to hear from KNOWLEDGEABLE individuals that have experiance with that wide of a rim or similar set up. I admit I have always been a fan of 15.5's and 14.9's on 16" rims just wondering if this will work out about the same. Early thanks to those with something prudent to say and kiss off to those that write just to see their ignorant comments.

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Dave

11-13-2003 16:27:20




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 Re: Question for Discussion in reply to Thinking?, 11-13-2003 04:39:14  
Some pulls limit the rim width, be sure to check this out before you spend some $$$.



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Mike Aylward

11-13-2003 14:32:49




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 Re: Question for Discussion in reply to Thinking?, 11-13-2003 04:39:14  
This size of rim was frequently used in years gone by before machine cutting came into being. They did indeed flatten out the tread but would allow the center of the tread on a tire to flex under certain conditions due to the lack of sidewall bracing. This being said, a tire can be cut on a machine that will match this flat profile allowing you to run a narrower rim. Anymore there simply is no reason to run a rim that wide. The best tire/rim setup is to run a rim that matches the section width of the tire. That way the sidewalls remain straight where they are the strongest and least likely to let the tread flex. The wider rim also adds unnecessary weight. Most of my customers use an 18" rim on their 18.4 tires. Hope this helps. Mike

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shultz

11-14-2003 04:35:29




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 Re: Re: Question for Discussion in reply to Mike Aylward, 11-13-2003 14:32:49  
I agree with the flexing up in the middle - we ran 22" rims and didn't seem to hook up then went to 16" rims as specified on the tires and then we had to go back to the motor to get them to spin - hooked up much better. We tried higher pressure in the tires, etc. and it just didn't seem to help all that much. We're now running them on 18" rims and they seem to work just as good as on the 16" they used to be on. We're not running v-cuts - just tapered cleat with wood planer.

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IH H Puller

11-13-2003 09:26:37




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 Re: Question for Discussion in reply to Thinking?, 11-13-2003 04:39:14  
A friend of mine runs a setup about like that. It works really well and puts a lot of tread (all of the tread) on the track. The only thing is, it takes a lot of power to turn them. I don't know what you're running so good luck.



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minnie ub

11-13-2003 10:49:03




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 Re: Re: Question for Discussion in reply to IH H Puller, 11-13-2003 09:26:37  
were going to 18.4 38 cuts on 18 rims. we thought about 20 rims but was advised against because of the power issue. we borrowed a set of 18.4 38 cuts on 18 rims this summer and the tractor pulls much better than when we have to run our 15.5.



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Tyler Neff

11-13-2003 17:46:10




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 Re: Re: Re: Question for Discussion in reply to minnie ub, 11-13-2003 10:49:03  
I pull in the heavy classes (7500-9500) with 18.4 38s on 18inch rims . They do ok but I think they would be better on 16s. On the wider rims I dont think the center of the tire gets much action. In the lighter classes they may not cave in as much. I dont think wider is better in all cases, there are to many factors in determining what tire to use to begin with ( wieght class, air pressure, tire manufacturer, rules).

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