I am new to this whole sport and game so I will apologize in advance for the basic question.

Can someone explain the different class designation? The manual lists FR, TBO, LRF, FWD GTR, GTR, Unclassified & single seater. I can figure out the last four, but don't understand the first three?

Thanks in advance.

TBO = turbo [FXO, RB4, XRT] as they all have turbos
LRF = LX6, RAC, FZ5

FR I have no idea.

The manual lists FR as the XFG and XRG
http://en.lfsmanual.net/wiki/Cars:FR

But I think that was quite a while back. Currently the "STD" class consists of the UF1, XFG and XRG.

I think FR just means both cars (xfg/xrg) F=Front (fwd) R= Rear (rwd)

Quote from Soulvex :

I think FR just means both cars (xfg/xrg) F=Front (fwd) R= Rear (rwd)

I think as a drivetrain it means Front Engine Rear Wheel Drive but that would not be true for xfg and uf1