Yokohama ADVAN A050 R Spec
Yokohama Tyre Australia is very lucky to have the brilliant ADVAN A050 R-spec race tyre. We're the only country outside Japan to get the tyre.
Now in Australia, the ADVAN A050 has become "the tyre to have" in Tarmac Rallies, Hillclimbs, Improved Production Racing Association (IPRA), Time Attack and just about every other tarmac event requiring R spec tyres.
Just how fast is the ADVAN A050? In October 2013 at the Yokohama World Time Attack Challenge at Sydney Motorsport Park, the Tilton Interiors Evo set a 1:24.855 lap time on a set of 295/35R18 ADVAN A050.
Often, the ADVAN A050 has had the majority share of many tarmac rallies. In 2013 around 60% of the competitors in the Targa Tasmania used ADVAN A050s.
ADVAN A050's were used on the wheels world Evo 8 that took out 1st Place Outright in the 2013 Targa West Tarmac Rally. Driver Peter Major Lead home 5 R35 GTRS and the Porsche 911 GT2 of Jim Richards to take his second Targa West Victory. Footage of the win and incar stages can be found on our Video page.
Since 2012 the Improved Production Racing Association have also been allowed to use the ADVAN A050.
It's a fast tyre that's brilliant in the wet. It heats up quickly and maintains its performance after many heat cycles.
Available in soft (G/S) and medium (M) compounds only through Yokohama Motorsport Dealers.
During cornering the contact patch load centreline shifts towards the outside edge of the tyre. This shift has been minimized with the A050, when compared with the A048, to provide greater control and linear steering feedback. Even heat distribution is crucial in race tyres. The tread pattern of the A050 has been optimized to improve the tread block nose and shoulder heat distribution. Centre nose heat has been accelerated while shoulders generate less heat. This provides improved control over performance deterioration even at high temperatures. Instead of the sharp-edged tread grooves of the A048, the A050 has grooves with rounded groove edges, laid out in continuous lines. These rounded grooves help disperse the load input from the road surface, which prolongs the life of the tyre.
The A050's stable and linear steering characteristics come in part from its high rigidity bead wire, which links the tyre carcass to the wheel, it squeezes the rim tightly and helps reduce energy loss when cornering, braking or accelerating. A rule of thumb for setting this tyre is 29 - 31 psi hot and above 60 degrees tread block temperature with less than 10% variation across the tyre.