36 to 30 Inch Rows
Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=120656
Printed Date: 10 Sep 2025 at 5:06pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: 36 to 30 Inch Rows
Posted By: Unit3
Subject: 36 to 30 Inch Rows
Date Posted: 19 Mar 2016 at 10:24pm
Looks as if we are going to make the change. We picked up a great old Kinze rf 16r30 planter. Will pull it with the 8050PS 2wd as it has 18.4's. I run the 7080 on the grain cart. Question is if I can set the 20.8x38's in to run down the rows good enough or do I need 18.4x38's or 42's on it?
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2-8070FWA PS/8050PS/7080/7045PS/200/D15-II/2-WD45/WD/3-WC/UC/C
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Replies:
Posted By: wayneIA
Date Posted: 20 Mar 2016 at 1:58am
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20.8 will work OK, just the 18.4 tires will give more room for error is all. Neighbor used to run the 20.8 tires down 28" rows. I run 16.9 tires down 20" rows, that is a little snug, but makes you drive more honestly, and have sprayed 15" beans with a 14.9 tire on a D17 if you want an ultimate challenge.
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Posted By: SHAMELESS
Date Posted: 20 Mar 2016 at 2:43am
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you won't regret changing to 30 in rows!
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Posted By: randy
Date Posted: 20 Mar 2016 at 7:45am
My 8070 and 8050 both have 20.8 set on thirty inch rows, I think they measure 31 or 32 inches from center of the tractor to the center of the rear tire. I side dress corn with the 8070, both are good for 30 inch rows.
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CA WD WD45 D17 D17 Diesel 7060 8050 8070
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Posted By: HD6GTOM
Date Posted: 20 Mar 2016 at 10:20am
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18.4x42 will be far easier to run on 30" rows. I think I only put 2 sets of 20.8X38 tires on in the years I was in the tire business, most everyone stayed with 18.4's or went to the 42" tires.
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