I found this info on race dezert that some others might also have on your mod list, The RADIUS light bars...CoNtInUe reading;
"The radius bar is a tough thing. It looks amazing and it's super badass. I just want to let everyone know that it's not going to be a high speed light. It will be good for most but not all. Led bars rely on each led to work with the one next to it to get distance and output. When you put the bar on a radius the LEDs now act individually. Yea it may be great for spread but with the lenses and optics we have spent years to design have given us all of the distance and the wide patterns that have given TT's top speed at night. I'm not trying to rag on the radius because I have seen what we have brought to the table and it looks awesome,I just don't want you guys getting bars and spending a lot of money to not get the performance you may be looking for."