So I discovered a visual glitch today which hopefully, is just visual and does not affect performance. When the Ferrari 250 GT was upgraded with the highest level of performance springs, the car is so low that the tires protrude through the body. This happens any time the car is shown, except at the main menu screen which shows a large print CAREER at the top.
Sorry for the low quality photo, but at least you can see in part what I am attempting to explain:
!(http://s29.postimg.org/ud8zyl1dz/ASc3_Lm8_Re_X66_FZ2q_Pnvo_E4_Mxk_G5v4_EIt_Awrfd6dsnm5_TFuqt.jpg]Car eats wheel)