Question about steering wheel controllers for PC?

Alright so I’ve played racing games for a hell of a long time, but I’ve never gotten a steering wheel controller, it’s always keyboard for me.

However one thing that does bother me is that you can’t easily keep a steady speed, if you are trying to match traffic you have to constantly adjust, and are always a bit slower or faster.

I was wondering, do steering wheel controllers (with the foot pedals) fix this? Are you able to keep a steady speed like when you are actually driving? Also is that with most games you use them on or do they need to be programmed to do that?