I just got new wheels and I got the front wheels off but I cant get the back wheels off.

Thanks

can you be more specific?

The bolt wont unscrew.

I don't know what car you have but as a general rule, if you can't get the nut to unscrew then either the wheel is stripped or you lost a roll pin. What you do in that situation is stick a flathead screwdriver in your outdrive to hold it stationary while you unscrew the nut, that should do it for you and then you can find the reason why it was not unscrewing in the first place.

I have a nitro rustler.

You ncan also try to take a small pair of pliers or needle nose pliers and hold the driveshaft and unscrew the wheel nut. Once you get the wheel off, make sure there is a pin sticking through the axle where the hex snaps on.

Ok can you please explain where is the driveshaft

It's the bar going from the differential to each wheel. When the car is rolling, the driveshaft spins.

Ok can you please explain where is the differential

I can see were this is going.

hehe

Personally I use a blowtorch or c4 and sometimes both.

It sounds like the nylox part came loose inside the nut. Needle nose pliers or little needle nose vice grips and tuen slowly.

I can't help it. You need a bigger hammer. Sorry, I'll stop now.

There's a jerk in every bunch!

sorry guys, had to do it.