Metric Hex Head Bolt - Dorman# 981-445 on 2040-parts.com

Jaguar XFR-S – tease take 2

The Jaguar XFR-S – a more powerful version of the XFR – will debut tomorrow at the Los Angeles Auto Show, but we get a second tease first. Jaguar’s punt at making the now ageing XFR credible against the new BMW M5 – the Jaguar XFR-S – is getting its debut at the Los Angeles Auto Show tomorrow, but ahead of that full reveal Jaguar is teasing interest with its second teaser photo of the most powerful saloon they’ve ever built. Last week we got a front view of the XFR-S with its more aggressive nose (and Jaguar’s favourite ‘Speedy’ blue paint job) and this week we get to see the thumping great carbon fibre rear wing Jaguar has bolted on the back of the XFR-S.

Optima Sports pushes two new tire innovations

WITH VIDEO -- If John Scott has his way, every car on the road will be shod with tires featuring built-in camber. Scott is the owner of Wisconsin-based Optima Sports, a small automotive-engineering firm, and inventor of Camber Tires--tires with a constantly decreasing diameter. According to Scott, his tires offer multiple benefits, including enhanced handling, increased stability, reduced tread noise, improved fuel economy and better safety by reducing rollovers.

A look at future Cadillacs

Cadillac revealed another take on a future large, rear-wheel-drive car during the Pebble Beach weekend—the ultra-cool Elmiraj four-seater coupe. This is Cadillac's second such concept in a couple years, after it showed the Ciel convertible at Pebble in 2011. Yet we hear that the first production car to ride on the so-called Omega platform will be a sedan scheduled to arrive in 2015 as a 2016 model.