NTPA Mitas Pro Stock Tire clarification/ Spec turbo December 23, 2022 04:42AM
The Mitas issue was discussed previously, but I don't recall the latest update on the NTPA website posted here.
I have a philosophical objection to grandfather clauses. This seems like a grandfather clause for pullers who happen to own any of 60 sets of tires.
Also, I must have missed where their 5.0 RN PS class was going to have a spec turbo.

What is everyone's thoughts on the clarification? Is the 48 lug rule new, or a clarification to an already existing rule?

2023 NTPA Pulling Rules
Tire Approval and Measuring

General Rules

Tire Approval

Any new tire and/or tire size(s) other than those currently approved for NTPA competition must be approved by NTPA Technical Services before being used in NTPA competition.
Company name and/or brand along with tire size and ply rating required to be molded into sidewall of tire from manufacturer and must remain visible on any tire used in NTPA competition at all times.
Any new tire or anytime an existing approved tire is sold to a different manufacturer or is rebranded with a different name, the tire must be submitted by manufacturer to NTPA Technical Services for approval directly from the mold before cutting.
It is the manufacturers responsibility to submit any new or rebranded tire to NTPA Technical Services for approval before tire is cut or used in NTPA competition. Violation of this rule(s) is subject to any penalty determined appropriate by the WPI/NTPA Executive Boards.

Tire Measuring

Tire to be measured using NTPA tools specifically designed for such purpose with tire mounted on specified rim width and inflation pressure adjusted to specifications set by tire size.
Tread to be measured from outside to outside of tire or tread face with caliper extending outside and to bottom of any radius at outer corner of tire face or tread.
Tire must measure less than maximum specifications for both circumference and width before being approved by NTPA Technical Services.

 Mitas 24.5 Tires – (unapproved tire exception to NTPA Pulling Rules)

Mitas 24.5 tire required to be corrected by cutting or grinding tire to maximum width of 24.5 inches in order to be used in NTPA competition. Corrected tires will be allowed in GN Pro Stock competition only. This exception to NTPA rules is limited to 60 sets maximum of inventory currently in the US as of December 2022. All tires brought to the US by Mitas from this date forward are required to be approved and meet NTPA tire dimensions out of mold before cutting. Corrected tires meeting 24.5 inch width specification will be branded with date of inspection before being allowed to compete.

Tire 48 Lug Rule

Region National classes limited to 24.5 x 32 tire with a maximum of 48 lugs are:
Super Farm
Light Pro Stock
Limited Pro Stock
Heavy Pro Stock – 5.0 turbo

2023 NTPA Pulling Rules

Competition Rules

Heavy Pro Stock - 5.0 Spec Turbo

WPI/NTPA Executive Boards voted to adopt the Wimer 5.0 x 5.370 spec turbo as the only turbo allowed in RN Heavy Pro Stock competition beginning in 2023 season.



Edited 2 time(s). Last edit at 12/23/2022 04:45AM by The Original Michael.
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Re: NTPA Mitas Pro Stock Tire clarification/ Spec turbo December 23, 2022 05:08AM
Is the width 24.5" ??

Where have I heard 25" and was that incorrect?
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Re: NTPA Mitas Pro Stock Tire clarification/ Spec turbo December 24, 2022 04:35AM
The tire rule in superfarm does read "treadwidth 25".
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Re: NTPA Mitas Pro Stock Tire clarification/ Spec turbo December 23, 2022 07:16AM
What is the thought process behind the 48 lug rule? If somebody wants to try 96 lugs why not?

Does this mean old style triple cuts will be illegal?
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Re: NTPA Mitas Pro Stock Tire clarification/ Spec turbo December 23, 2022 07:29AM
So now the price of the first 60 oversized tires just doubled
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Re: NTPA Mitas Pro Stock Tire clarification/ Spec turbo December 23, 2022 09:16AM
No, the first 60 are oversized out of the mold, but must be corrected by Mitas and inspected to verify that they meet the rules. Future tires must meet the rules out of the mold.
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Re: NTPA Mitas Pro Stock Tire clarification/ Spec turbo December 23, 2022 05:52PM
Did Art Arfons have a set of turf style one time?
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Re: NTPA Mitas Pro Stock Tire clarification/ Spec turbo December 24, 2022 12:59AM
Quote
Nyer
Did Art Arfons have a set of turf style one time?


Yes he did,around 1990 to 1992 only hooked them a few times
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Re: NTPA Mitas Pro Stock Tire clarification/ Spec turbo December 24, 2022 04:31AM
Some interesting tire rule facts.
NTPA rules have had a lug count for 24.5 tires ONLY, for years.
Now, another point is, the lug count was ONLY in the Superfarm rules.
No mention of lug count in any of the other classes with 24.5 tire maximum size rules.
So, for LAST YEAR, a PS with more lugs than 48 were legal.
There is no lug count for 30.5 tire classes, nor any lug count for any "small tire" classes.
Speaking of cleaning up the rule book, the tire rules for SS tractors, and modifieds read a little different, so maybe those should read same.
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Re: NTPA Mitas Pro Stock Tire clarification/ Spec turbo December 23, 2022 11:04AM
Quote
ppmengineering
What is the thought process behind the 48 lug rule? If somebody wants to try 96 lugs why not?

Does this mean old style triple cuts will be illegal?

I agree!!
What is wrong with 49 or 50 or even 100 cuts? It is innovation.
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Re: NTPA Mitas Pro Stock Tire clarification/ Spec turbo December 24, 2022 12:44AM
Quote
racehorses

What is the thought process behind the 48 lug rule? If somebody wants to try 96 lugs why not?

Does this mean old style triple cuts will be illegal?

I agree!!
What is wrong with 49 or 50 or even 100 cuts? It is innovation.

2022 GN PS champion had more than 48 bars ....and the tires that won every CT hook in that last half of the season had more than 48 bars.....that must of hurt some feeling$......................LOL
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