Michelin Pilot Super Sport 255/40ZR18 XL Pilot Super Sport MO1
Michelin

Pilot Super Sport

255/40ZR18 XL
Summer
$243.74/tire $324.99
Set of 4: $974.96
Minimum order: 4 tires (sizes can be mixed) ? Selling in sets of 4 is how we keep our prices this low — and a matching set keeps your car balanced and safe.
Most drivers replace all four for even wear and handling.
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Specifications

Size255/40ZR18 XL Pilot Super Sport MO1
Width255 mm
Aspect ratio40
Rim diameterR18
Load index99
Speed rating(Y)
Load rangeXL
SeasonSummer
UTQG300 AA A
Treadwear warranty30,000 miles
Tread depth9.5/32"
Weight23.68 lbs
Max pressure50 psi
Severe snow (3PMSF)No
Run-flatNo

About the Michelin Pilot Super Sport

Summer Ultra High Performance Passenger Car tire.

Features

* Inspired by the same engineering that has powered 13 consecutive victories at 24 Hours of Le Mans* Variable Contact Patch 2.0 and Twaron belt package* Bi-compound - LeMans inspired compound on the outer shoulder and latest wet-oriented elastomers on the inner portion of the tread* 30,000 Mile/50,000 km Manufacturer's Treadwear Limited Warranty - Speed Rating: [(Y),Y]* Mileage Warranty Exceptions - Split fitments/Zero Pressure (ZP) tires* Standard Limited Warranty (All Michelin® Tires)

Benefits

* For long, even wear* Delivers excellent braking

Understanding the 255/40ZR18 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 Michelin Pilot Super Sport is built for

The Michelin Pilot Super Sport is a summer tire, tuned for maximum dry and wet grip in warm conditions; it is not intended for near-freezing temperatures. Fitment category: Passenger Car, Performance, UHP.

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 $243.74 per tire, a full set of four costs $974.96. That is about 25% above the average of the 71 tires we stock in this size, reflecting its position in the range. Backed by a 30,000-mile treadwear warranty, that works out to roughly $32.50 per 1,000 miles across the set.

Frequently asked questions

What does the tire size 255/40R18 mean?

255 is the section width in millimetres, 40 is the aspect ratio (sidewall height as a percentage of width, about 102 mm), and R18 indicates radial construction for a 18-inch wheel. Overall diameter is approximately 26 inches.

What are the load and speed ratings of the Michelin Pilot Super Sport 255/40ZR18 XL?

Its load index of 99 allows up to 1,709 lbs per tire. Its speed rating of Y is certified to 186 mph. Check your door-jamb placard and do not fit a tire rated below the vehicle's requirement.

How much does a set of 4 Michelin Pilot Super Sport 255/40ZR18 XL tires cost?

A single tire is $243.74 and a set of four is $974.96, covered by a 30,000-mile treadwear warranty.

Can the Michelin Pilot Super Sport be used in winter?

No. This is a summer tire and it is not rated for severe snow service. Its compound stiffens as temperatures approach freezing, so fit winter or all-weather tires for cold-season driving.

Does the Pilot Super Sport come in other sizes?

Yes — we stock 63 additional Pilot Super Sport sizes besides 255/40ZR18 XL. Fit only a size approved for your vehicle.

Other sizes of this model

Similar tires in 255/40R18

Pirelli Cinturato P7 255/40R18 Cinturato P7 (*) Runflat
Pirelli
Cinturato P7
255/40R18
Summer Run-flat
$282.87/tire
$1131.48 set of 4