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Tire sizes and rims


 
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Jziemer
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Joined: 02 Jan 2013
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PostPosted: Mon Jan 07, 2013 7:03 am    Post subject: Tire sizes and rims Reply to specific post Reply with quote

Will 18.4-38 tires fit 20.4-38 rims? Thanks
 
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JD Seller
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PostPosted: Mon Jan 07, 2013 7:14 am    Post subject: Re: Tire sizes and rims Reply to specific post Reply with quote

Not right or safely. The rims are way too wide.
 
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David G
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PostPosted: Mon Jan 07, 2013 7:52 am    Post subject: Re: Tire sizes and rims Reply to specific post Reply with quote

Tire sizes and rim sizes are two different things. It sounds like you are talking about tire sizes.
 
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DeltaRed
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Joined: 25 Feb 2010
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Location: Delta,colorado

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PostPosted: Mon Jan 07, 2013 7:55 am    Post subject: Re: Tire sizes and rims Reply to specific post Reply with quote

Another answer would be,"How wide are the rims"?Measure them.Then you know the facts.Someone could have replaced 18.4s with 20.8s.Seen it done...JD is right,20" rims are too wide for 18.4 tires.Measure your rims.
 
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showcrop
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PostPosted: Mon Jan 07, 2013 9:06 am    Post subject: Re: Tire sizes and rims Reply to specific post Reply with quote


Pullers routinely put tires on oversized rims. but that is for strictly straight line use. curves and corners and side hills could present difficulties.
 
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JMS/.MN
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PostPosted: Mon Jan 07, 2013 9:35 am    Post subject: Re: Tire sizes and rims Reply to specific post Reply with quote

Using old size markings....ie, pre decimal- it is common to go an inch wider or narrower than rim width. Beyond that inch, they look funny and act funny. ok, decades ago there were some 7.5, etc, rim width, not bulge of the tire like the new size markings are.
 
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Mike Aylward
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PostPosted: Mon Jan 07, 2013 3:47 pm    Post subject: Re: Tire sizes and rims Reply to specific post Reply with quote

If you have 18" rims you can put 18.4's on there just fine. I have a set of duals on a tractor that are set up like this and there is no problem whatsoever. However, if they are wider then they will not work well in the field. On the track, yes. But not in the field. Mike
 
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hd6gtom
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PostPosted: Wed Jan 09, 2013 11:31 am    Post subject: Re: Tire sizes and rims Reply to specific post Reply with quote

J-- I Spent 22+ years in the farm tire business, It has been done many times, especially if they are trying to get down 30" rows. The 18.4's fit on a 16" rim and 20.8x38's go on 18" rims. We had 1 man go to 20" rows on beans and decided he wanted to cultivate. We put 15.5x38's on those 18" rims, worked, but as soon as the correct width rims were available, that fall, we got him some and mounted the 15.5x38's on them.
 
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Jim W SEMN
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PostPosted: Wed Jan 09, 2013 5:40 pm    Post subject: Re: Tire sizes and rims Reply to specific post Reply with quote

I have had 18.4s on rim for 20.8s for 20 years on my 4 wheeler all 8 of them and had no problems. In fact I am on my second set of 18.4 radials.
 
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