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Tractor Pulling Discussion Forum

Re: 16.9.38 or 18.4.38?

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mightymolinekid

09-24-2013 06:42:24
166.182.3.112



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The last pull I was at, 6500 lbs 4 MPH speed limit, big tires were the answer. The track was wet sticky clay and two factors came into play. You had to have enough HP to hold 3.8 MPH through 260 feet AND you had to have 18.4 tires. The guys with 16.9/38 tires were 30-50 feet behind 2nd place, they had good power but couldn't get hold of the track. However I've also seen it go the other way. Wet muddy track the big tire guys couldn't get traction and a stock Oliver 770 with 15.5 tires took 1st by 15 feet LOL. In my opinion, it depends on the tracks you'll be running and how your tractor is set up. Big tires are useless if you can't turn them.

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