Farm Stock Tires Radial vs Bias March 18, 2020 02:04PM
We are pulling an Oliver with a 5.9 Cummins (small turbo, rotary pump) in a no speed limit 7k and 8k pulling classes. We are limited to 18.4 x 38 tires, no cuts allowed, would you prefer radial or bias ply tires and why?

Thanks

Rich
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Re: Farm Stock Tires Radial vs Bias March 18, 2020 03:34PM
I dont know of 1 reason other than weight to run bias tires. Bias tires will be lighter, but you get way more footprint with radial tires.
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Re: Farm Stock Tires Radial vs Bias March 18, 2020 03:49PM
Agree with rock
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Re: Farm Stock Tires Radial vs Bias March 18, 2020 09:50PM
When I switched to radials on my 12000# 12mph tractor the difference was very noticeable, More bite further down the track, My big adjustment is getting the air pressure right to avoid power hop.
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Re: Farm Stock Tires Radial vs Bias March 19, 2020 08:37AM
I agree, seems like the radials are harder to get tire pressure set, 2 psi either way seems to make a big difference. I’ve always been told to run lots of air pressure but 16-18 psi seems to work in the 9000-11000 pound classes. They will squat a little at 16 and are solid at 18.probably would not have to run near that much air pressure in the 7000/8000 pound classes?
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Re: Farm Stock Tires Radial vs Bias March 19, 2020 09:37AM
We are currently running Firestone bias plies at 12 psi.

Rich
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Re: Farm Stock Tires Radial vs Bias March 19, 2020 05:35PM
My 7000# 666 with 20.8 38 radials at 19psi would hop so hard that all 4 tires would be off the ground. At 25psi she would just hunker down and pull, very happy with those tires.
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Re: Farm Stock Tires Radial vs Bias March 20, 2020 08:58AM
On our 23 degree Firestone radials we run between 14 and 16 psi at 12000 lbs and it never hops
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Re: Farm Stock Tires Radial vs Bias March 19, 2020 11:38AM
You guys do understand that radials are designed to be run at plus or minus 25 psi right? I ran my radials at 24 psi ALWAYS and they were perfect. No hop and would hook on a sand trail
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Re: Farm Stock Tires Radial vs Bias March 20, 2020 04:36AM
I have had great luck with bias play Goodyear dyna torques. That's what I would reccomend to all my competitors.
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Re: Farm Stock Tires Radial vs Bias March 20, 2020 04:51AM
Yes and the biases dont jump either. Field and Road Firestones are my pick. Or BFG Silvertowns. Get you some that are road worn as Lewis said, you won't be disappointed. You can run a lower pressure to get them to hunker down and pull without the bounce.
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