Nfera SU1

About the Nexen Nfera SU1

Summer Ultra High Performance Passenger Car tire.

Features

* 3 main grooves and a semi groove* Dry grip technology* Optimum surface split siping design* Equally balanced design and enhanced block rigidity* 25,000 Mile/40,000 km Treadwear Mileage Warranty* Road Hazard Replacement Warranty (First 3/32 or 2 Years)* 36-Month Roadside Assistance

Benefits

* Maximize wet driving performance and enhance handling* Improves handling and braking performance* Improves wet/dry traction performance* Disperse stress evenly during high speed cornering; boosting cornering and steering stability

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 Nexen Nfera SU1 is built for

Fitment category: Undefined.

Tread life and grip ratings

This tire carries a UTQG rating of 300 AA A. The treadwear grade of 300 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 $161.25 per tire, a full set of four costs $645.00. That is about 17% below the average price of the 71 tires we stock in this size. Backed by a 25,000-mile treadwear warranty, that works out to roughly $25.80 per 1,000 miles across the set.