Summit Ultramax AS 2 Tire

Summit Ultramax AS 2 245/40R18XL

4.8(256 store reviews)
$137.63 each
$550.52 set
or 4 interest-free payments of $137.63 Shop Pay Klarna Afterpay interest-free when paid on time
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Category
All-Season Touring
Tread warranty
60,000 miManufacturer limited
Load index
971,609 lbs per tire
Speed rating
WUp to 168 mph
Know your tire

About the Summit Ultramax AS 2

Everyday confidence, mile after mile.

Best forDaily commuters and families driving passenger cars, CUVs, or SUVs who want dependable all-season performance and long tread life at a value price.

The Summit Ultramax AS 2 is an all-season passenger tire built for cars, CUVs, and SUVs that need dependable year-round capability. It delivers a balanced mix of wet-weather traction, stable highway handling, and everyday ride comfort, all backed by a 60,000-mile limited tread life warranty — making it a practical, value-oriented choice for daily drivers.

The Ultramax AS 2 uses a symmetrical tread layout with a continuous center rib and angled sipes to promote straight-line stability and consistent road contact. Fully siped inner tread blocks accelerate water evacuation to resist hydroplaning and sharpen wet grip. A variable-pitch tread arrangement staggers block sequences to break up resonance frequencies, keeping cabin noise noticeably low across a range of speeds.

The numbers

Specifications

Size & Dimensions
Brand Summit
Tire Model Ultramax AS 2
Part Number SMT20657K
Tire Size 245/40R18XL
Section Width 245
Aspect Ratio 40
Rim Diameter 18
Overall Diameter 25.71
Overall Width 9.65
Sidewall Black Side Wall
Performance
Speed Rating W
Load Index 97
Load Range XL
Max Inflation Pressure 50
Tread Depth 10
Ratings
UTQG 420AA
Tread Wear 420
Traction A
Temperature A
Mileage Warranty 60K
Category
Tire Type All Season
Good to know

Questions about this tire

What does 245/40R18XL 97W mean?

245 is the tread width in millimeters, 40 means the sidewall is 40% of that width, and R18 is the 18-inch rim it mounts on. 97 is the load index (1,609 lbs per tire), and W is the speed rating (up to 168 mph).

Who makes the Summit Ultramax AS 2?

The Summit Ultramax AS 2 is marketed in North America by TBC Brands under the Summit Tires label, a brand with roots going back to 1974. Production has been sourced from facilities in locations including Qingdao, China, and Thailand, though manufacturing origin can vary by size and production run.

How well does the Ultramax AS 2 handle wet roads?

The tire's fully siped inner tread blocks and circumferential grooves work together to move water out from under the contact patch quickly, reducing hydroplaning risk and maintaining grip on wet pavement. For typical rain and light standing water, most drivers should find the wet performance solid for an all-season tire in this price range.

Is the Ultramax AS 2 a good choice for winter driving?

It handles light winter conditions — a dusting of snow or cold, dry pavement — reasonably well, as expected from an all-season tire. However, it does not carry the Three-Peak Mountain Snowflake (3PMSF) certification, so it is not rated for severe snow service. Drivers who regularly face heavy snowfall, deep accumulation, or significant ice should consider a dedicated winter tire instead.

How long can I expect the Ultramax AS 2 to last?

Summit backs this tire with a 60,000-mile limited tread life warranty. Reaching or exceeding that figure depends on maintaining proper inflation, keeping wheels aligned, and rotating tires on the recommended schedule. Under normal driving conditions with routine maintenance, the warranty provides a solid baseline expectation for tread longevity.

Is the Ultramax AS 2 a noisy tire on the highway?

Noise is managed through a variable-pitch tread pattern that offsets block sizes to prevent sound waves from amplifying into a consistent hum. The result is a noticeably quieter ride compared to tires without this design feature. While no all-season tire is completely silent, the Ultramax AS 2 is engineered with everyday comfort in mind.

The brand

About Summit Wheels

Summit is a value-oriented wheels brand offering aftermarket alloy wheels primarily aimed at budget-conscious consumers and everyday drivers. The brand focuses on delivering functional, presentable wheel designs without the premium pricing associated with forged or luxury-tier manufacturers.

Shop all Summit tires →

Vehicle Compatibility

Buying from TFS Wheels

Shipping, returns & guarantees

Authorized Dealer — 100% Brand New Wheels & Tires

TFS Wheels is an authorized dealer for every brand we carry. Every wheel and tire we ship is brand new, unused, and packaged in its original manufacturer's box. We never sell refurbished, demo, or return-stock product. All manufacturer warranties apply and our warehouse is staffed by people who only handle wheels and tires — no in-transit damage, no test-fits, no surprises.

Free Shipping (Lower 48)

Free shipping on every order — wheels, tires, and accessories — to the contiguous United States. No minimum order, no hidden fees.

Standard delivery is 4–7 business days; expedited is 1–4 business days. Orders placed before 1:00 PM ET typically ship the same day. We do not ship internationally or to PO boxes.

Fitment Guarantee

If a wheel or tire marked "Direct Fit" or "Aftermarket Fit" for your vehicle arrives and does not fit as expected, we cover both the restocking fee and return shipping. The same applies if the bolt pattern does not match — provided your vehicle information was submitted at checkout.

To qualify for the guarantee, enter your year, make, model, and submodel before placing the order.

Manufacturer's Warranty

Every wheel and tire is covered by the full manufacturer's warranty against defects in materials and workmanship. Coverage terms vary by brand — most cover structural integrity for the life of the wheel and finish for 1 to 2 years from purchase. If you ever have a warranty question, contact us first; we work directly with the manufacturer on your behalf so you don't have to.

Accessories Included with Your Order

When you submit your vehicle information at checkout, the right lug nuts and (if needed) hub-centric rings are automatically added to your cart in the correct sizes — no guessing, no separate ordering.

TPMS sensors are also available in the cart. We program each sensor to your vehicle's exact year, make, model, and submodel before shipping, so they arrive ready to sync with your truck or car the moment they're installed. This typically saves customers the dealer or installer's programming fees, which often run several dozen dollars per wheel.

Returns

Returns are accepted within 30 days of purchase on items in new, unused condition. A 25% restocking fee applies to general (change-of-mind) returns, and the buyer covers return shipping.

The restocking fee and return shipping are waived for incorrect items, transit damage, or fitment issues when vehicle information was provided at checkout. Single wheels, single tires, mounted items, special orders, and accessories (lug nuts, locks, hub-centric rings, TPMS sensors, installation kits) are final sale.

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