Kyle from Out of Spec Reviews puts the Hankook iON HT on his Rivian R1T daily driver and runs it through a private track session and several hundred miles of highway driving. The iON HT is an all-season tire designed from the ground up for the specific demands of electric trucks and large SUVs: high vehicle weight, instant torque, rolling resistance targets that actually matter for range, and low noise on long highway runs. It comes in 18, 19, 20, and 21-inch sizing and covers most electric trucks on the market, including the F-150 Lightning and Rivian R1T.
On the track, the performance was well above what Kyle expected from a long-life all-season. Acceleration traction on the R1T, which is not a slow vehicle, was strong and consistent. Hard braking from 55 mph produced confident grip. Lateral loading through corners showed good steering response and real feel through the wheel, with grip levels that Kyle described as genuinely surprising given the tire's warranty and intended use case. This is a tire built for roads, not circuits, and it more than held its own on a private track.
On the highway at 75 mph, the electric motors were louder than the tires. That is the meaningful noise benchmark for an EV-focused tire, and the iON HT clears it. Kyle reported no high-pitched cavity noise and very little tread noise after 500 to 700 miles on the R1T. Efficiency over that period has been notably strong, though he notes specific numbers will come in a dedicated test. The engineering logic is sound: as battery capacity gradually degrades over years of use, a tire optimised for rolling resistance can partially offset that loss and maintain real-world range.
This video is sponsored by Hankook, though the track and highway driving impressions are Kyle's own. If you run a Rivian, Lightning, or similar electric truck and your current tires are due for replacement, this is worth a look.