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8.25X20 Conversion to Modern Tire Size


 
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prairieplow07
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Joined: 04 Oct 2008
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PostPosted: Sun Mar 01, 2020 8:06 am    Post subject: 8.25X20 Conversion to Modern Tire Size Reply to specific post Reply with quote

I want to change the tires on my 1962 GMC4000 to a
modern tire. I found that 9RX22.5 is the exact
replacement. However, I am now finding that
9RX22.5 are very hard to find and very expensive.
Is there another modern tire size that will
replace the 9RX22.5? Finding rims is another
challenge! (10-hole / 8.75 circle / 6.25 hole)

Like all the posts I read, the tires are worth
more than the truck.
 
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Jim in Sask
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Posts: 648


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PostPosted: Sun Mar 01, 2020 5:48 pm    Post subject: Re: 8.25X20 Conversion to Modern Tire Size Reply to specific post Reply with quote


I went through something similar this past summer - the back tires on my 1981 Chev C60 were shot (9.00x20). Between new rims plus radial tires the cost was too much. I didn't care much for Chinese tires but my local shop I was dealing with said he'd put quite a few Samson tires on trucks with good results. 9.00x20 bias was available so I went with them and have been happy with the results. I don't know if they make an 8.25x20 though.
 
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John Saeli
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PostPosted: Tue Mar 24, 2020 4:51 am    Post subject: Re: 8.25X20 Conversion to Modern Tire Size Reply to specific post Reply with quote

8:25X20 tires are plentiful, economical, in comparison, and available in traction and steer. We just put 4 - 8:25X20 rear traction tires on our 1980 C50. I also use 8:25X20 steer tires on our CASE-IH Grain drills in place of the original 20" drill tires which are only 4 ply and very expensive.
 
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barwinn
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PostPosted: Wed Apr 15, 2020 11:24 pm    Post subject: Re: 8.25X20 Conversion to Modern Tire Size Reply to specific post Reply with quote

I was told before that 255/70/22.5 is comparable to 9Rx22.5. Try 4wheelonline. They have some good pricing on tires.
 
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