The rubber may be literally meeting the road when it comes to Tesla Motors breaking out a Model S and Model X with a 100-kilowatt-hour battery option. Tire seller Tire Rack is listing the 2016 Tesla Model S P100D among vehicles for which tires can be fitted, Teslarati says. Unsurprisingly, those tires don't come cheap.

The listing indicates that the California-based electric-vehicle maker may be a bit closer to unleashing a larger-capacity battery for its luxury cars. Such a battery would likely take the single-charge range of a Model S over 300 miles, given that the 90-kWh-battery version can go 294 miles before it needs to be plugged in. The Model X's range tends to be shorter, but a larger battery would help push the SUV's single-charge range towards the magic 300-mile threshold as well.

Reports surfaced recently that Dutch regulator RDW approved the Tesla Model S P100D for European roads, giving a single-charge estimate (using the more lenient European driving cycle) of about 380 miles. Earlier this year, noted Tesla hacker Jason Hughes found a "P100D" insignia encoded in a Tesla Firmware update before engaging in a bit of Twitter warfare with Tesla CEO Elon Musk. A Tesla representative didn't immediately respond to a request for comment from AutoblogGreen but Tesla told Teslarati that, "there's nothing to announce."

As for Tire Rack, the seller says it has 76 tire models that could fit a P100D with 19-inch wheels, and 15 more that would be appropriate for 21-inch wheels. Prices start at $120 per tire and rapidly work their way up to $577 per tire.

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