I can't really give you a definite answer, as the categories you have mentioned are never clearly defined in the game or even real life: Yes, the TSR-R is a production car, but one could argue it's a pre-tuned car as it is an upgraded variant of the Zenvo ST1 (see Pagani Zonda R for a similar example).
Are you planning to write the article about the TSR-S?
What I want to say is that - apart from third party tuners - manufacturers do tune their cars as well. This is what I meant with the term "ambiguous", the games do not have a unambiguous definition of the latter.
I have actually already worked on the article after doing the Ford GT70, and overwritten yours, but only because I have gathered almost every in-game information except for the CarStats stock tune values.
Audi #45 Flying Lizard Motorsports R8 LMS ultra BMW M635 CSi BMW Z4 GTE Chevrolet #3 Corvette Racing Corvette C7.R Dodge SRT Motorsports Viper GTS-R Ferrari 458 Italia GTE Ford #66 Ford Racing GT Le Mans Ford Falcon FG X Ford Falcon XR GT Holden VF Commodore Jeep Grand Wagoneer