What kind of car speakers rock your car like a subwoofer?

I'm looking for speakers for my ford focus 2012 and I want something that will rock the while car like a subwoofer you know make all the seats vibrate but nor to much like an actual subwoofer please help thanks

"Like a subwoofer" could mean a lot of things; Let's look at what's expected when you play music. There are instruments and voice, covering the sound range from around 40Hz to about 16 kilohertz. You can find speakers that play down into the 40s. Look at some Kicker 6 x 9 speakers. When you say, "like a subwoofer" maybe you mean the lowest parts of music, or maybe you mean the panels rattle and you feel the cloth on your body shaking. Go to a stereo shop and see what speakers sound like. Nowadays, people don't know what a woofer is and call any big speaker a subwoofer. Something else to consider; the lower the frequency, the more power a speaker needs to achieve a certain sound volume, for instance, a 30 watt tweeter and keep up with a 90 watt woofer. The stereo in your Focus might be putting out 20 watts per channel, adding up to 80 watts of sound when you're playing it loud. A pair of 6 x9's on the rear deck might suit you, and your family will hear you coming home from down the street. You could add an amp to boost to a few hundred watts if you want the car to imitate a live concert for you as you drive. There really is not point to having all the furniture shaking. That's noise and a nuisance.

I want something with a lot of bass but not as much as a subwoofer would

If you're thinking you're going to get a door speaker that will boom like a sub -- it's not going to happen. If that were an option nobody would use subwoofers.
You can use a small sub to get a little low frequency output -- a good 8" or even a 10" wouldn't require much power or a lot of box space, but there's no substitute for a subwoofer.