I just built a brand new PC, and I was wondering if this would run BeamNG on high, medium, or low. I found the requirements and I fit some high and some medium. The specs are below. Gigabyte Radeon R9 270X WINDFORCE 4gb Asus A88X-Plus AMD Athlon X4 860K 8gb of DDR3 RAM Cooler Master 550W Power Supply 1tb Toshiba HDD 128GB Adata SSD Windows 7 Home Premium
Hard to say since you're cpu is a little lacking but you're gpu is decent. This computer is all over the place so it's hard to come to a conclustion. low-med is likly, since I can't honestly say how well it will run under stress with that outdated cpu.
I have the 760k which is just one step down from yours (about 30% worse). If you overclock you can get great performance, I run at normal to high settings and can use a Moonhawk at 55 FPS. But seriously, overclock your CPU as I did! (3.8GHz to 4.6GHz)
Your GPU should run on mid-high settings no problem, but your CPU might have some trouble with the Moonhawk and won't run the T75 at all. Lowering graphics settings won't help with CPU bottleneck, so just set it to high and see what happens.
I have an i3 4130 3.4ghz and a r7 260x and i am able to run it maxed out no problem so you should be fine.