I wonder how fast a current Radical RXC would be, seeing that their previous record of 6:48 was set 8 (!) years ago, so also with 8 year old tyre technology.
The only real review of a RXC proved that on street tyres it drove circles around the mclaren P1 'all day long' (conclusion of EVO magazine)
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Z4 3.0i | ESS TS2+ supercharger | Quaife ATB LSD | Brembo/BMW performance BBK front/rear | Schrick FI cams | Schmiedmann headers+cats | Powerflex/strongflex PU bushings | Vibra-technics engine mounts | H&R anti rollbars | KW V3 coilovers/KW camber plates | Sachs race engineering clutch | tons of custom sh#t
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