Shakes after 90?

my car isnt designed to go over 70 i know...but if i wanted a smoother ride how would i stop all the shaking? like the dash board and stuff....engine mounts? allignment? any tips would help thank you.

Start with an alignment and balancing.

What kind of suspension do you have? Could be worn parts.

hub centric rings for those aftermarket wheels. I have an extra set layin around here for our cars... 57.1mm inner and 67mm outter. You just need to find out the inner bore of your wheels. If you pay for shipping and want them, there yours.

how would i find out that information and what are they? how do i install them? will they fit on most kinds of rims? mabye pics?

You have to contact the manufactuer and ask them whats the inner bore of the rim so i can buy a set of hubcentric rings. I do not know what brand you have. and for installation they just slip over your stuck hub and center the wheel when you tighten your wheels back on your car. Takes less than 5 seconds to insall them once wheel is off.. Just slap them on and your good to go.