Advan Sport A/S+

About the Yokohama Advan Sport A/S+

All-Season Ultra High Performance Passenger Car tire for Sports Coupes and Luxury Sedans.

Features

* Optimized contact patch* Upgraded high performance HS-2 compound* Extra-large outside shoulder blocks* Optimized sidewall construction* Four-pitch tread variation* 55,000 Mile Limited Treadwear Warranty and 30-Day Trial Satisfaction Guarantee (W/Y-Rated non-standard fitments and front position tires used in staggered fitments)* 27,500 Mile Limited Treadwear Warranty (W/Y-Rated rear position tires used in staggered fitment applications)

Benefits

* Equally distributes pressure to promote long, even wear* Dramatically improves braking in wet and wintry conditions for dependable, all-season grip* Provide enhanced cornering* Delivers crisp, responsive handling* Reduces road noise for a comfortable, quiet ride

Understanding the 255/40R18 XL size

In the size code 255/40R18, 255 is the section width in millimetres (about 10"). 40 is the aspect ratio — the sidewall height is 40% of the width, or roughly 102 mm. R18 means radial construction on a 18-inch wheel, giving an approximate overall diameter of 26".

The load index 99 means each tire supports up to 1,709 lbs — about 6,836 lbs across a full set of four. The speed symbol Y certifies the tire to 186 mph under its rated load. Always match or exceed the load index and speed rating listed on your vehicle's door-jamb placard.

What the Yokohama Advan Sport A/S+ is built for

The Yokohama Advan Sport A/S+ is an all-season tire, balancing dry grip, wet traction and tread life across spring, summer and autumn conditions. It carries an M+S (mud and snow) marking for light winter service. Fitment category: Passenger Car, CAR, Performance, UHP.

Tread life and grip ratings

This tire carries a UTQG rating of 440 AA A. The treadwear grade of 440 is a relative durability score — a grade of 200 is expected to last roughly twice as long as a grade of 100 under the same controlled test. Traction grade AA measures straight-line wet stopping grip (AA is highest, then A, B and C). Temperature grade A reflects heat resistance at sustained speed (A is highest).

Price and value

At $155.24 per tire, a full set of four costs $620.96. That is about 20% below the average price of the 71 tires we stock in this size. Backed by a 55,000-mile treadwear warranty, that works out to roughly $11.29 per 1,000 miles across the set.