245/45R18 tires are ready to ship now, with 84 in stock spanning more than 20 brands — from touring all-seasons to ultra-high-performance and dedicated winter rubber. Every order ships free, Affirm financing is available at checkout, and fast delivery pulls from a nationwide network so you get your tires quickly. Compare options across price and season below, or browse the full tire selection to confirm this is your fitment.
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Showing 36 in stock.
What 245/45R18 tires means
The 245/45R18 code describes the tire's shape in a standard format. The first number, 245, is the section width in millimeters — about 9.65 inches across the widest part of the tread. The 45 is the aspect ratio, meaning the sidewall height equals 45% of that width, which works out to roughly 110.2 mm (4.34 inches). The 18 is the rim diameter in inches, so these mount on 18-inch wheels.
Put together, the tire has an overall diameter of about 26.68 inches and turns roughly 756 revolutions per mile. Those numbers matter: overall diameter affects your speedometer accuracy and clearance in the wheel well, while the moderate 45-series sidewall balances responsive handling with a reasonable amount of cushioning over rough pavement. Staying close to the original diameter keeps your gauges honest and your ride predictable.
Vehicles & uses
245/45R18 is a popular size across sport sedans, coupes, and many crossovers and small SUVs. Its moderate width supports balanced handling while the mid-height sidewall keeps ride quality civil for daily driving. Because it's offered in touring, performance, and winter designs, it suits everything from year-round commuting to spirited weekend driving. Always match the size, load index, and speed rating on your door placard or existing tires before buying.
Brands & options in 245/45R18 tires
Premium and touring choices include Continental, with the ContiProContact and both ProContact TX 96H and ProContact TX 96V versions available. For grip-focused driving, Hankook offers the Ventus S1 noble2 H452, while Kumho brings the Ecsta Sport A/S PA71.
For all-weather and winter needs, Nexen covers the N Blue 4S 2 and the N'Priz AH5, and Nokian provides the studless Hakkapeliitta R5. Value-oriented picks include Lexani with the LXUHP-207 and RFX Plus, plus Venom Power Ragnarok GTS and the Covert Grip Asp. Additional brands in this size include Pirelli, Toyo, Falken, GT Radial, General, Nitto, Dunlop, Laufenn, and Vogue.
How to choose
Season
Summer tires deliver the sharpest dry and wet grip in warm weather; all-season tires trade some peak performance for year-round versatility; and dedicated winter tires provide the best traction in snow and ice. Pick the category that matches your climate and how you drive.
Treadwear & UTQG
The UTQG treadwear grade offers a relative sense of how long a tire may last, alongside traction and temperature ratings. Higher treadwear numbers generally suggest longer wear, though softer performance compounds often trade tread life for grip.
Load index & speed rating
The load index and speed rating (the number and letter following the size) indicate the maximum weight each tire can carry and its rated speed capability. Match or exceed your vehicle's original ratings — never go below them.
Warranty
Many models carry a mileage treadwear warranty. Check the specific model's coverage on its product page, since terms vary by tire.
Frequently Asked Questions
What does 245/45R18 tires mean?
245 is the section width in millimeters (about 9.65 inches), 45 is the aspect ratio (sidewall height is 45% of the width, roughly 4.34 inches), R means radial construction, and 18 is the wheel diameter in inches. The assembled tire is about 26.68 inches in overall diameter.
How much do 245/45R18 tires cost?
Prices range from about $105.67 to $493.00 per tire, depending on brand, season, and performance level. Every order ships free, and Affirm financing is available.
How many 245/45R18 tires are available?
There are 84 in stock across more than 20 brands, including Continental, Hankook, Nexen, Kumho, Nokian, Lexani, Venom Power, and more.