Explaining tire rule for Tunica

[Hillbilly Hooker]

The reason for changing the rules to allow 18.4 in the farm stock 1 . The previous rule allowed 16.9 max for farm stock 1. This prevented any of the standard type tractors such as W9, 55 masseys, G molines Oliver 99,900 case from pulling at all in FS 1. According to the data I have found all of these tractors were factory equipped with 15-34 which were replaced with 18.4 x 34. These tractors all had a dry shipping wt of less than 7000lbs with the exception of the 99 oliver. So why would we make them change to one size smaller tire to be allowed in FS1. I hope this helps in understanding our descision for the change. Keith

 

[Anonymous-0]

Thats fine let them run 18.4-34s . None came with 18.4-38s so why jump to that size tire. Lot of difference in 34s and 38s.

 

[Hillbilly Hooker]

Well, I tried to give a reasonable explaination but I see you dont agree. But an M farmall or an Oliver 77 or WC allis didnt come with 16.9 38 either. so you want to kick them out too? That is all I have to say. Have a nice day. Keith

 

[Anonymous-0]

if i grind off my size is that legal i'll make my tires smoth and pretty

 

[Lamont]

OK. Here is a run-down of the tractors that pulled in Farmstock I last year 6500, 7500, and 8500 lb weight. Farmall M, Super M, 460, 560, John Deere A, G, 60, 730, Cockshutt 50, Moline U, GB, Case 400. As far as I know, none of the tractors on this list could have a 16.9 x 38. However, there are some tractors out there that could have come out with 18.4 x 34s. Now, you mention going ahead and running 18.4 x 34, but NOT 38s because 38s weren't available. Does that mean that those running 16.9s will stick to 34s as well, because 38s didn't come on any of these in 16.9s either? Seems to me the argument maybe should include whether or not those running 16.9s should have to run 34s if you're going to limit 18.4s to being 34s. Make sense?

 

[Dblair]

3,250 3,500 4,000 Weight Classes 13.6 MAX Tire Size (170 sq in.)
4,500 5,000 5,500 Weight Classes 15.5 MAX Tire Size (200 sq in.)
6,000 7,000 Weight Classes 16.9 MAX Tire Size (252 sq in.)
8,000 9,000 Weight Classes 18.4 MAX Tire Size (300 sq in.)
10,500 12,000 Weight Classes 24.5 MAX Tire Size


this is a tire size chart from Carolina Antique Club . this chart makes it fair for everyone

 

[james rumph]

Not to debate you but !

I deal with a I.H dealer hear of 60 or more years in the same place and they cater to the antiques.

The owner Jim Carliton has told me in reguards to my 52 Super M that 16.9-38s were a factory replacement size tire.

I have been told this by several people but others say were nuts !!!!

I really want to believe the gentelmen that has done this his hole life .

What really gets me is the fact that a bigger tire requires more power and there is more role out so that will hurt a "stock" tractor.

Grant you it does effect the mph . But a bigger tire really hurts you based on the fact you will loose speed with a bigger tire requireing a lower gear.

So why not let them run what ever they want?

I would like to hear a "factual" reason why and how a bigger tire helps a stock class tractor.


It would be nice to get all clubs on the same page on this topic.

 

[jd b puller]

There's a much bigger issue than tire size to worry about. I've requested Haywood several times and can't get it done. Like it or don't, if you can afford to drive 500 miles, stay in a hotel for 3 days, take off work, build a competitive tractor, etc, you can comply with their tire rules.

The bigger issue here is that they need to move the date by a week, my daughter's birthday is December 3rd and momma isn't too keen about going 800 miles to a tractor pull and I'm not gonna miss that little girl's birthday. I can't believe he won't make this happen.

 

[Anonymous-0]

A M or SM pulling 8500# with 18.4's and short hitch is no where near stock in the engine.

Someone has someone, on a phone, that is being quite convincing, to someone else wanting that way and is winning. That is BS!!!

12.4, 13.6, and 14.9 would be a replacement tire canidates for the M-450. When you have to widen the rim to fit the fat rubber on, its no longer stock, nor considered to be a replacement. You cant put a 16.9 or a 18.4 on a 10 or 12 inch rim.

Stock is supposed to be stock,
try a different color smoke screen fellas.

Ive been down this road and some one is not being very honest.

Im sure, the fella that pulls 3500# is not worried about what tires a G moline has on it for 7500#!

18.4's on a VAC case and have the power to run em is not stock now is it?

So, why should the tire size affect them all?
Ill tell ya why,,
they aint stock and they are pulling a fast one in the slow class.

Put 18.4's on a true stock M or SM,
add the short hitch and go pulling,
you wont get far unless the sled is ONLY twice as heavy as the tractor!

Why call it FS is it aint?

May as well switch to full NATPA rules and be done with it.

JMHO from 20+ years of seeing it happen over and over again.

 

[Mopower]

Hey guys. It's pretty easy to find out what was factory installed maximum tire size. Dealers say otherwise, but if I stuck to what MM dealers did to my tractors, I'd whoop em all. The book tells all. Our club permits one width over stock on tires, but factory rims only. Pretty abundant, but no stock guy wants to pinch big tires on there. He'll get beat.

 

[LW]

I was following this and thinking the same thing there is a huge difference in foot print from 34's to 38's. Why not go by the footprint size and then a guy can run whatever as long as it fits in the foot print stated. Because a 18.4 X 34 is basically the same foot print as a 16.9 X 38 if memory serves me.

 

[Ol Gray A]

I think a lot of this is just a difference of opinion. Mean Green's Farm Stock 1 Rules are almost identical to NATPA's Division 2 rules. If we made the Farm Stock 1 rules the same as Natpa's division 1 rules, every one would be raising hell and no one would be able to pull in Farmstock 1 at Tunica. Division 1 rules are out of the field tractors, no hang on weights and 24" drawbar length. I know for a fact that we do not have any of these tractors there. In reality we have tried to conform our rules similar to Natpa's. NATPA division 2 rules even have a no aluminum rule. THey also allow 18.4x 38 in 6500 and up weight divisions. So in actuality the difference is in how we named it. You Yankees call it Division 2, we call it Farm Stock 1. I don't think that we would have enough true Division 1 tractors to warrant having them at Tunica. We all know that there are no true stock tractors pulling at Tunica. I hope I have made this as clear as mud. If you don't belive me go read NATPA's rules for yourself.
NATPA Division 2 rules

 

[Old Mo Iron]

I like those tire rules, they could be used in Mo

 

[Old Mo Iron]

I like those tire rules, they could be used in Mo

 

[Anonymous-0]

To all the fine folks at Mean Grean; I feal that you have the best pull of the year ,the one everyone looks forward to. I dont even own a set of 18-4s but if I did I wouldnt wear them at Tunica because the track is always very well maintained. I REALLY DONT SEE THE BIG FUSS. The tractors pulling below say 6000lb in MY opion would have the advantage, narrower tire hard track=better bite.Last year my wife won the 3500fs1 in a pulloff,the other 3 tractors all had wider tires. The year before the guy that won that class had 13-6-38s. The year before that we got second place in 3500fs2 with 13-6-38s all these examples were against the 16-9-38 rule and most all the other pullers had them on so, why gripe the way I read the rules it states you can run the wider tire not that its required. As for the aluminum rule I dont understand why gas tanks and wheely bars but no top plates again MY opion none should be none.Thanks again guys for the greatest pull of the year look forward to being there.

 

[colekicker]

Take a closer look at those NATPA rules. 300 sq inches is for 6501 to 8500. Not 6500. The biggest tire in 6500 is 229 sq inches, a 16.9x34.
The 16.9x38 is 252 sq inches, so it is close.

 

[jd b puller]

I was thinking the 18.4-34's were smaller than this, but Firestone chart says otherwise.

Tire______in^2
14.9-38 = 200
16.9-34 = 229
16.9-38 = 252
18.4-34 = 284
18/4-38 = 300
Firestone_Tire_Chart

 

[Ol Gray A]

Give a guy with bifocals and bad eyes a break. you are splitting hairs with that.LOL!!!!

 

[tallpa]

How many years hasTunica had the 16.9 rule for farm stock 1 ? Everybody is geared up for it. It has run pretty smooth, so again if is was not broke, why mess with it. I am sure the fact that a must be home boy who got protested last year for running 18.4's in the 8500 pound class and got upset because he got dq'd and made a comment the rules will be changed next year has nothing to do with this change. Again 18.4 or 16.9, pick one so everyone has the same chance for the ones who pull in 5500, 6500,& 7500.

 

[Lamont]

I don't think your memory is serving correctly.
16.9 X 38 (252 square inches)
18.4 X 34 (284 square inches)
18.4 X 38 (300 square inchea)
This is according to Firestone data.

 

[zap]

I think that what all this boils down to is someone with a power trip! Last year after their was a protest in the 8500 class Farm Stock 1,one of the offices said there would be a tire change for this year. Well congratulations you finlly got it done! All this other talk about MM's Case and all the other's about factory tire sizes is a smoke screen and "their" campaign for new tire rules.

 

[wijd]

QUIT YOUR CRYING!!
IF YOU CAN'T BEAT 'EM, BUCK UP AND JOIN 'EM.

 

[Lamont]

Case 900, IH-McCormick W9, Moline G, John Deere 730 all had the option of what is now 18.4 X 38 tires from the FACTORY; not a dealer. Are you saying it makes any kind of good sense to tell someone who pulls one of these tractors in a 6500, 7500, or 8500 lb. class that is FARMSTOCK 1 that they can't use a factory tire option, and at the same time allow M/Super M, Moline U, John Deere A or G, etc., etc. to pull 16.9 X 38 that wasn't a factory option for any of 'em? Please explain how that makes sense. There's no smoke to that one. Those tractors don't even have enough power to run 16.9 X 38 tires anyway without a modified engine.