Piston Slap: Torsion Beam Bump Steer Solutions?

Sam writes:

I have a 2015 Hyundai Elantra SE. It has 25,000 miles and serves its purpose of a street parked commuter car that is comfortable enough for the occasional 600-mile round trip on weekends. The only real issue I have with the car is the cheap-car torsion beam rear suspension. Over large bumps on one side of the car the rear of the car feels like it oscillates extremely in each direction.

In a straight line it is controllable but I worry that in a off ramp taken a little too fast that a unseen bump could actually upset the car enough to lose control (or surprise a fiancé who is used to the handling of a 200S). The 2007 Honda Fit and 2015 Chevy Volt I drove I believe have similar setups but didn’t feel at all like this, and neither did the 2011 Crown Victoria I drove. I’ve read online that some aftermarket replacement shocks would help with this.

Is this really the case? Would a lighter set of wheels also help?

Read more
  • Johnny ringo The Skylark didn't get the v6 with the offset crankshaft journals until 1978, in 1977 my mother was shopping for a new car; we were looking at a Skylark with the v6. I test drove it and at idle it seemed like a paint shaker was under the hood. She finally bought a 2dr Skylark ( an S/R model I believe) with the 305 Chevy engine. I would rate it as average, nice but certainly not exceptional.
  • IBx1 Honda hasn't had VTEC since the end of the 8th generation Civic Si. They've stamped the brand on simple karen-spec variable valve timing, but it's not the 3-lobe on/off cam profile with the kick.
  • Cprescott As a teenager, I remember when these were new, they were nice cars and were certainly better to look at than a Nova. Classic badge engineered product but the car was striking with a beautiful blue metallic exterior and white interior in a two door hatch.
  • Lichtronamo One of the memories I have is of my Grandpa driving his GM sedans with the tilt steering column. Every time we parked he'd pull the lever and let the wheel fly up - a very distinctive sound.
  • Nick Naylor I've had a 4th Gen Quest since 2014, still do at 165k miles, and wrote about it here on TTAC also: Reader Review: 2014 Nissan Quest LE | The Truth About CarsI had many of the same observations as Karesh (very soft ride / traditional American luxury car handling, nice interior appointments), but some different. For one, with the LE version with the nicer wheels and accents, the design looked better to me, and I believe has really aged well. All the practicality nitpicks (no stow & go, etc.) go unrealized for us, as the van has done everything we've ever needed it to do, and that includes moving lots of different large items, many long vacation trips, even towing light duty trailers (wouldn't put anything legitimately heavy on a CVT).We've changed the CVT fluid every 60k miles and have had no real issues on the vehicle. It's been honestly a great family van for us--comfortable, reliable, efficient, spacious. The JDM thing made this van cool to me. I spent a year in Asia and a lot of time in Hong Kong, and these fancy JDM vans were the king way to get around. The Elgrand (same as Quest) was one of the coolest. So in the end, we've had a reliable vehicle for our family of 5+ Labrador for 9 years that is a little cooler/more interesting than the other options we had available at the time. that's a win