225/55R18 tires are ready to ship now, with 65 options in stock spanning premium, performance, and value brands including Continental, Pirelli, Nokian, Toyo, Falken, Hankook, Kumho, General, GT Radial, Hercules, and Ironman. Every order ships free, and Affirm financing lets you pay over time while fast delivery from a nationwide network gets your tires to you quickly. Browse the full lineup below or jump straight into the tire selection to compare.
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Showing 36 in stock.
What 225/55R18 tires means
The 225/55R18 size code describes three key measurements. The first number, 225, is the section width in millimeters (about 8.86 inches) across the widest part of the tire. The 55 is the aspect ratio, meaning the sidewall height is 55% of the section width — roughly 123.8 mm, or 4.87 inches. The final number, 18, is the wheel diameter in inches the tire mounts to.
Put together, a 225/55R18 tire has an overall diameter of about 27.74 inches and turns roughly 727 revolutions per mile. Those figures matter for real reasons: overall diameter affects your speedometer accuracy and gearing, so staying close to the factory size keeps your readings honest. The 4.87-inch sidewall height provides a cushion of ride comfort, while the width and diameter influence clearance in the wheel well.
Vehicles & uses
This is a popular touring size found on many crossovers, compact SUVs, and touring sedans that came from the factory on 18-inch wheels. Because it blends a moderate width with a taller sidewall than lower-profile sizes, it leans toward comfortable highway manners and all-weather versatility rather than track-focused handling. Always confirm the correct size for your specific vehicle against the placard on the driver's door jamb or your owner's manual before ordering.
Brands & options in 225/55R18 tires
On the premium and performance end, Continental offers the SecureContact AW, while Nokian brings all-weather choices like the Remedy WRG5 and the One. Pirelli's Scorpion Weatheractive and Toyo's Celsius II round out weather-ready picks.
In the touring and performance tier, Falken covers a range with the Aklimate and the Ziex CT60 A/S, Kumho offers the Crugen KL33, and General delivers the popular Altimax RT45.
For value-focused shoppers, GT Radial lists the Maxtour LX, Hercules offers the Roadtour Connect AS, and Ironman carries the budget-friendly GR906. Hankook, Nexen, Nitto, Laufenn, and more add to the depth of choice.
How to choose
Season
Start with the season that fits your climate. All-season tires balance year-round traction; all-weather and winter-rated options add cold-weather and snow capability; and summer tires prioritize warm-weather grip. Several 225/55R18 models here are built for all-weather use.
Treadwear & UTQG
The UTQG treadwear grade is a comparative rating for expected tread life, alongside traction and temperature grades. Higher treadwear numbers generally suggest longer-lasting rubber, though real-world mileage depends on driving habits and rotation.
Load index & speed rating
Match or exceed the load index and speed rating your vehicle requires. Many 225/55R18 tires carry a 98 load index in H or V speed ratings; check your door placard so you never fit a tire below the factory specification.
Warranty
Compare the manufacturer's mileage warranty where offered, since coverage varies by model and reflects how the maker positions the tire's longevity.
Frequently Asked Questions
What does 225/55R18 mean?
It describes a tire 225 mm wide (about 8.86 inches) with a sidewall height 55% of that width (about 4.87 inches), built for an 18-inch wheel. The overall diameter is roughly 27.74 inches, turning about 727 revolutions per mile.
How much do 225/55R18 tires cost?
Prices currently range from about $106.44 to $327.00 per tire, so there are options for both budget and premium buyers.
How many 225/55R18 tires are available?
There are 65 in stock across brands including Continental, Pirelli, Nokian, Toyo, Falken, Hankook, Kumho, General, GT Radial, Hercules, and Ironman, all with free shipping and Affirm financing.