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UMP Modifieds - New tire rule for the 2015 season.
A40S will replace the A40. The tire is similar to the LM30S that the late modes run with more durability.
Teams will be allowed to run the A40 past April until their stock is depleted.
ALSO UMP Modifieds there will be no grooved tires in 2016
Here is the rules in the picture below.
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2025 Season - TBA
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Last edited by nathans1012; 1/18/15 at 1:36 AM.
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