Replay only shows chassis

I have a car (mod) I just started running and when I watch a replay only the wheels and headlights (maybe a couple other things) show up in the replay, no body. Any ideas?

Which mod and which graphical settings?

Most times it can be that your graphic settings are too low, set them as high as possible except for the SHADOWS, set these at medium, no higher.

If your PC is old, you may have to run fewer cars to get it to work correctly.

I'm sorry, should have said what I'm trying to run. I have A 50s loading of GTL and am running the 500 TRC mod ( I think Marian did it) and I'll have to check the settings. Yes, the computer is old and I only have 4 GB of ram so maybe that's it/ I'll check the settings. Thanks

possible a in .cas error

Just gonna nip in here and add a penny's worth, I found that the 500 mondial (is that your problem car rainmaker?) ran seemingly just great when I installed it, but recently when using another car I drive past it and it's just chassis and headlights only, I put it down to 'it's something else I'd b*ggered up' and figured to look in depth later... maybe it's not just me though!

Oh, btw, I'm using it on GTL-GTR2 not GTL

Maybe it's due to the LOD settings in the .cas file of the 500 TRC?
It's quite a high poly model and for smooth game play Marion set the distance for the next lower poly LOD pretty (too) short?
Do you see it in the showroom too when you zoom out?

Yes, it's the 500 TRC and yes, I can see it in the showroom as well as on the track when I'm in another car (even another 500 TRC).

I bumped up the res setting in-game to full... better now. Thanks