Modern BMW Engines in GT2
#40325 from Ian Barberi · Rule change · TB 26-09 (2026-09 Fastrack)
In GT2-ST Spec Lines, BMW E46 M3 & E36 / BMW Z3 BMW 5000cc V8, add the following effective 10/1/2026:
"The 3.4 liter 6 cyl. (87.0 bore x 93.0 stroke) is permitted at 2575lbs. 4.0L V8 permitted at 2900lbs. 4.5L V8 permitted at 2950lbs.
5.0L V8 permitted at 3000lbs. BMW B58 V8 is permitted at 3300 lbs. with 47mm TIR."