Weight adjustment to former GT3U cars
#40474 from Super Touring Committee · Rule change · TB 26-07 (2026-07 Fastrack)
In STU Spec Lines, STU-GT3U, GT3U, change Minimum Weight as follows:
"Current GT3 race weight plus 225 275 pounds"
In STU Spec Lines, STU-GT3U, GT3U, change Notes as follows:
"All GT3U (Majors and Runoffs) cars using up to 15”x7” wheels limited to 225 section width tires shall run at current GT3 race
weight plus 225 275lbs. All Gt3U cars shall run a DOT approved tire with a maximum section width of 245. GT3U cars are allowed
optional 15”x9” wheels with a 1.5% weight addition or up to 18”x9” wheels with a 3.0% weight addition to the total weight
including the 225 275lbs Increase the minimum weight of all GT3/GT3U 2.0 liter unrestricted engines to +75 lbs. All GT3 cars
running in STU must meet the minimum ride height of 3.0” for the main frame rails not including rub blocks and a 2” minimum
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for the front spoiler and split"