#sumitomo

Airless tires are one of those things that crop up every few years, but they never seem to stick around long enough to become commonplace. Already, certain construction vehicles use flat-proof rubber, and tire manufacturers have been playing with airless systems for some time. For example, Hankook has the iFlex, its fifth attempt at non-pneumatic tires, and Goodyear has actually begun selling airless donuts on commercial lawnmowers. Michelin even has a 3D-printed round that it claims will last the lifetime of a vehicle.

Unfortunately, nobody seems able to come up with a solution that works at higher speeds. While they’re great at taking impacts, the existing designs aren’t so good at coping with high levels of heat. But it’s not for a lack of trying — there may even be a breakthrough just around the bend, especially since everyone seems so interested. Rolling resistance and weight are two of the electric car’s worst enemies. If an automaker could mitigate those issues effectively, that would be another leg up on the competition.

It’s an issue weighing heavy on the top minds at Toyota at the moment. The company’s recent concept EV, the Fine-Comfort Ride, came equipped with a set of experimental airless tires from Sumitomo Rubber Industries, boringly named the Smart Tyre Concept-A. Toyota’s theory is that non-pneumatic tires, consisting of a solid band of rubber encircling lightweight alloys, could eventually compensate for the weight of wheel-mounted electric motors.

“Hey!” Across the parking lot, my brother was yelling at somebody. “HEY! DO YOU HAVE A FLAG AT THAT CORNER? YES? YOU DO? YOU REALLY HAVE A FLAG? ARE YOU SURE? ABOUT HAVING THE FLAG? YES? THEN WAVE THE FUCKING THING NEXT TIME, YOU IDIOT, SO NOBODY GETS KILLED!”

It was ninety-four degrees at noon, with no shade available anywhere, and tempers were flaring. My son was sitting a hundred feet away in Bark’s Fiesta, making a waving motion at me that I interpreted as If you don’t leave your corner station and get me water, I’ll die in this hot car like a dog. But then he gave me a thumbs-up, which my paranoid mind interpreted as I just want to let you know you’re a great dad… before I die from the heat.

This was shaping up to be the worst autocross ever. For some of us, anyway. For my brother, who had already said that he wanted to go home at lunch. For my son, who was dying of heatstroke. For me, too; my leg hurt like hell wouldn’t have it and I felt sick to my stomach. Most of all, for the thirteen extremely annoyed men in their M3s and STIs and whatnot who were being taken to school by Danger Girl. For her, it was the best autocross ever. But it would get worse.

What was the problem of EVs again? It’s the battery. Too expensive. Empty too fast. Also known as price and range.

Japan’s Sumitomo Electric thinks they have a solution, in the true sense of the word. Their molten salt battery is said to cost about 10 percent of the price of lithium ion batteries. It also holds twice the charge.

Japan’s auto industry is slowly putting its toes back into the Iraqi quicksand. Their stalking horse is Sumitomo, which established the first office of a Japanese company in Iraq since the U.S.-led invasion of 2003, The Nikkei [sub] reports. The office is in the business center at Baghdad’s international airport, surrounded by American military facilities. They’ll build the world’s most heavily guarded workshop.