Hyundai Veloster JS: Where Does the Pull and Heavy Steering After Tuning Come From?

01 / NHC MOTORS

Deciding where to start

The concerns were ride harshness, a pull to the right, heavy steering and unsettled cornering. Despite the extensive modifications, the owner wanted a comfortable, predictable car for everyday use.

Initially we prioritised handling, then ride comfort, then appearance. Driving with the owner after the work changed that order. Comfort came first, with some compromise on appearance if needed.

“I want to reset it.”
Customer during consultation

02 / NHC MOTORS

Checking the current wheel and tyre setup

The wheels are 9.5J at the front and 10.5J at the rear, with Michelin Pilot Sport All Season 265/35ZR18 tyres at all four corners. The front setup includes 15 mm spacers.

The front and rear tyres are the same size, but the wheels have different widths. With spacers and a lowered ride height, we checked the wheel-and-tyre configuration alongside the alignment readings.

03 / NHC MOTORS

Alignment measurement and what changed

Rear toe initially measured 6.7 mm left and 4.1 mm right. After adjustment it was 1.3 mm and 1.5 mm. The thrust angle changed from 0.10° to -0.01°.

The ride height and wheel configuration differ from stock. We targeted approximately -1.8° rear camber for the current setup. This target was chosen for the current ride height and wheel configuration.

All four toe readings are within the equipment’s stock reference ranges. The four camber readings and front-left caster are outside those ranges. Further front-end setup and suspension travel checks are planned together.

04 / NHC MOTORS

RFV measurement and matching tyre to wheel

RFV is measured by pressing the assembled tyre and wheel against a roller and rolling it, reading how the load varies through one rotation. It is a different item from mass balancing with weights, so even a balanced wheel can be felt as vibration at certain speeds if its RFV is high.

The last screen recorded RFV of 6.0 kg for tag 1, 1.5 kg for tag 2, 4.5 kg for tag 3 and 5.0 kg for tag 4. We also reviewed the machine’s proposed minimum-pull arrangement.

Matching tyre to wheel position requires unseating the bead and reassembling. This work was done on a Hunter Revolution.

05 / NHC MOTORS

What was completed and what is still scheduled

After alignment, we reset the steering-angle sensor with G-scan 3. We then reopened the measurement screen to confirm a zero reading, rather than relying only on the completion message.

The technician explained the bent tie rod to the owner using the recorded video and recommended replacement. It was not replaced during this visit. Tyre pressures were set to 34 psi front and 33 psi rear; the rear tyres had arrived at 31 psi.

We then drove with the owner. The technician noted less road noise and more natural lane-change and cornering responses. The owner also commented on the improvement.

Even now, it has already improved a lot.— Owner, during the post-service drive (translated)

Some front-end movement under acceleration and harsh impacts over uneven surfaces remained. Suspected lack of damper travel during the road test was included in the next inspection plan.

The next stage prioritises everyday comfort

The next stage is about comfortable commuting and predictable everyday driving. Wheel width, offset and tyre characteristics will be selected for that purpose, rather than for a more aggressive driving setup.

We will assess the existing suspension first, including ride height and available bump and rebound travel. Ride-height tightening where needed and tie-rod replacement are also part of the follow-up review. Further road testing will check the changes against the owner’s feedback.