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Implement Alley Discussion Forum

tire size for disk and grain drill

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Ardie

04-01-2007 15:33:11




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I have a John Deere KB or KBA series 10ft wheel disc with 15 inch rims. I need new tires so would like to put implement tires on. What is the corret size? I also have a John Deere Model B 10ft grain drill with 15 inch rims that also needs new tires. What is the correct size for the drill? I checked the forum but did not find anything. Thanks for your help.




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Gerald J.

04-02-2007 19:45:40




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 Re: tire size for disk and grain drill in reply to Ardie, 04-01-2007 15:33:11  
Tire size affects planting rate and depth. Both are adjustable and can be calibrated independently. In fact the book says rates are approximate. To be sure pull the drill 10' on a concrete surface and count or weigh the seed to improve the precision of its planting.

I went simpler which worked good. I jacked up one wheel, put a sack under the spout and turned that wheel (with the planter in gear) ten turns and measured the circumference of the tire and did the math from there.

Gerald J.

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55 50

04-02-2007 13:04:59




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 Re: tire size for disk and grain drill in reply to Ardie, 04-01-2007 15:33:11  
Contrary to what some believe this forum DOESN"T HAVE answers to EVERYTHING.



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Glen in TX

04-02-2007 13:42:52




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 Re: tire size for disk and grain drill in reply to 55 50, 04-02-2007 13:04:59  
And YOU do ??? LOL



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Glen in TX

04-02-2007 10:24:01




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 Re: tire size for disk and grain drill in reply to Ardie, 04-01-2007 15:33:11  
You could use any 15" or even 16" size tire-wheel or type on the disk and not matter. On the drill I'd suggest calling JD Publications at 800-522-7448 and getting yourself a operators manual OMM188670 that plainly states tire sizes. Depending on which model B drill it could have used 6.70 or 7.60-15 or 7.50-20 wheels and tires. If you read the manual you find out tire inflation was most important or drill accuracy and for 15" wheels inflate tires so distance between ground or floor to the center of axle is exactly 13 1/4" and with 20" wheels this should measure 17 1/4". Yes implement tires were recommended but some used a slanted lister ridge type tire planting on beds. Those lister tires are hard to find now and we later found implement tires worked just as well when planting on lister ridges.

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paul

04-02-2007 09:06:14




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 Re: tire size for disk and grain drill in reply to Ardie, 04-01-2007 15:33:11  
The disk, anything that fits. All I ever see are used car tires.

The drill it is fussy to get the right size to make the seeding rate be accurate. I believe most drills of that age came with 16 inch rims, but I don't know for sure. I'd research that a bit more. You would need the right tire height, can be hard to get that right from old tire sizes to new tire sizes. Mostly I see 16 inch truck tires on old drills.

--->Paul

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Gerald J.

04-01-2007 18:58:09




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 Re: tire size for disk and grain drill in reply to Ardie, 04-01-2007 15:33:11  
6.70-15, 7.00-15, 7.60-15, 7.5SL15 all have been available as implement tires. I'd suggest a place but management on this site won't let me give their name. Others that would have them include Miller Tire and Gemplers. Most any tire dealer should be able to get them. Used car tires will be cheaper but I don't think will last as long.

Gerald J.



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Don-Wi

04-01-2007 17:24:53




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 Re: tire size for disk and grain drill in reply to Ardie, 04-01-2007 15:33:11  
The model B drill came with 16 inch rims from the factory, and pretty much all of them had used car tires put on at the dealer, as those were (and still are) a plentiful and cheaper supply.I'm guessing the disk would have had car tires as well, but I mcould very well be wrong.

The manual for our B drill calls for, in both passenger car and implement tires, either:
6.00, 6.50, 7.00, or 7.50 16 tires. Ours has 7.50-16 implement tires on it.

Donovan from Wisconsin

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