Hmmm...There's inherently a certain amount of bounce and play in this
type of rack IMO, but it's hard to say what's normal and what's
concerning. I have a Saris hitch-mounted rack on my Honda Pilot and
even with the heavy 2" tubing there's some decent rack movement when
you hit rough patches of road. My guess is this jounciness is
amplified by the short wheelbase of your Suzuki. ANY short-wheeled SUV
will probably produce similar action and it's difficult to say if
buying a compact SUV with larger hitch tubing will make a big
difference.
I'd try a few things before ditching your current vehicle:
1) Try shimming the male 1 1/4" tubing to reduce the movement inside
the mount itself. I get similar play with my 2" tubing but not enough
to concern me--the noise is annoying but I've learned to live with it.
2) Add bungees and/or nylon cord tiedowns to the rack/bike connection.
I do this as a matter of routine in case a violent jarring bounce
causes the Saris wheel clamps to pop loose. Reinforcing both wheels'
rack cradles and tieing everything down to the bottom cross pieces
buys a LOT of peace of mind and only takes a minute or two if you use
bungees. I run the cords in X-fashion from the bottom of the rack to
the top of each wheel/tire and back down again.
3) Do a tiedown test run over rough roads with a beater bike on back.
LH