Farm Equipment - 8030 Tire Size

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8030 Tire Size

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=160042
Printed Date: 17 Sep 2025 at 6:53pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: 8030 Tire Size

Posted By: BrianWI
Subject: 8030 Tire Size
Date Posted: 14 Apr 2019 at 9:32pm

I have a new too me 8030 that needs new rear tires. It currently has 18.4-38s on it now.

I have a set of 20.8-38 Firestone radials that I could take off another tractor and put on the 8030. How much of a difference in traction would there be between the 18.4 vs. 20.8s. Would there be an advantage in going to 20.8-38s?

Replies:

Posted By: Michael V (NM)
Date Posted: 14 Apr 2019 at 11:01pm

20.38's are about all ya want if your doing 30" rows..I would rather have 18.4-42's for the 30" rows.. 20.8-38 and 18.4-42 are really close to the same height wise... go with step up rims if ya want the 42's... I think the 20.8 really need a 19 or 20"wide rim,, but they will fit on a 18"wide...

the tractor would really look better with either of the larger tires,,, 18.4-38's just look to little to me...

Posted By: Lynn Marshall
Date Posted: 15 Apr 2019 at 6:58am

If it's a FWA, then technically you would need to have larger tires on the front also.

Posted By: BrianWI
Date Posted: 15 Apr 2019 at 7:06am

The tractor does not have front assist, and will be use mostly for tillage.

Posted By: coggonobrien
Date Posted: 15 Apr 2019 at 7:33am

We switched our 8050 from 18.4x38 to 18.4x42 with a set of power rail rims from a company ere in NE Iowa who makes the rims. We have been very happy with the set up. Running Firestone 23 deg radials with matched hub mounted duals. We run sprayer with it on 30" centers and also a 9 shank chisel plow/25 ft 2500 disc/29 ft deutz field cultivator. No issues with tractions. No Fluid. Cast Inner weights.

Posted By: coggonobrien
Date Posted: 15 Apr 2019 at 7:35am

[TUBE]FhyhqhlfApA[/TUBE]

Posted By: coggonobrien
Date Posted: 16 Apr 2019 at 9:31am

New to us chisel plow.

[TUBE]QA0GKdS25FI[/TUBE]

Posted By: victoryallis
Date Posted: 16 Apr 2019 at 6:20pm

Both my 8030 and 8050 have 20.8x38 on them.

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8030 and 8050MFWD, 7580, 3 6080's, 160, 7060, 175, heirloom D17, Deere 8760

Posted By: AC7060IL
Date Posted: 17 Apr 2019 at 9:09am

Oggonobrien, Great videos of your 8050. Thanks for sharing. In the first video, I loved the November evening or early morning sky with what may appear to be remanants of rain or snow shower clouds from distant areas.

In the later video, I could hear your toddler jabbering & the dog running up to greet you both. Great family moments.

I think I also heard the 8050 power direct from HI to LO, turn at the ends, then from LO back to HI once chisel is lowered? Ok is it a Power Shift? And it looks like it may have 9bolt dual hubs?? Sharp AC tractor and it sounds awesome pulling along thru the field!

Posted By: coggonobrien
Date Posted: 17 Apr 2019 at 12:31pm

power director for the 8050 and 7060, our 7020 is a power shift. We run 10 bolt hub mounted duals on the 8050 and 7060, 9 bolt on the 7020. tire sizes: 8050-18.4x42, 7060 20.8x38, 7020 18.4x38