225/45R18 tires are in stock in over 100 fitments spanning more than 20 brands, from premium names like Continental, Pirelli and Nokian to performance and value labels such as Nexen, Falken, Lexani and Lionhart. Every order ships free, and Affirm financing lets you spread the cost, with fast delivery from a nationwide network. Prices in this size currently run from about $92.31 to $366.97 per tire.
Shop 225/45R18 Tires In Stock
Showing 36 in stock.
What 225/45R18 tires means
Each number in the code describes a physical measurement:
- 225 — section width of 225 mm (about 8.86 in), the tire's widest point.
- 45 — the aspect ratio: the sidewall height is 45% of the section width, which works out to 101.2 mm (about 3.99 in).
- R — radial construction.
- 18 — fits an 18-inch wheel diameter.
Stacked together, those figures produce an overall tire diameter of roughly 25.97 inches and about 777 revolutions per mile. That last number matters because it drives speedometer and odometer accuracy — staying close to the factory revolutions per mile keeps your readings honest. The relatively short 3.99-inch sidewall favors crisp steering response and firmer handling, while the 8.86-inch width affects clearance inside the wheel well and fender.
Vehicles & uses
This is a widely used passenger size. Independent size listings describe 225/45R18 as fitting many sedans, coupes, and select crossovers. The lower-profile sidewall and 18-inch diameter are common on sporty and touring passenger cars where drivers want a balance of ride comfort and responsive handling. Always confirm the size, load index and speed rating printed on your door placard or existing tires before ordering.
Brands & options in 225/45R18 tires
The premium tier centers on Continental tires, including the ContiSportContact 5, the track-minded ExtremeContact Sport 02, and the all-season TrueContact Tour 54. Pirelli, Nokian and Toyo round out the top shelf.
For a performance and touring mix, Hankook tires offer the Ventus S1 evo2 K117B and the touring Kinergy GT H436. Nexen tires include the all-season N Blue 4S 2 and the N'Priz AH5.
On the value side you'll find Lexani tires with the LX-TWENTY, Venom Power tires including the Covert Grip Asp, plus Versatyre, Lionhart and Advanta. Additional choices come from General, Kumho, GT Radial, Nitto, Sumitomo, Dunlop and more. Browse the full range on the all tires hub.
How to choose
Season
Match the tire to your climate. Summer tires prioritize dry and wet grip in warmer temperatures; all-season tires balance year-round usability; winter tires are built for cold, snow and ice. Some options in this size are all-weather designs meant to bridge the gap.
Treadwear & UTQG
The UTQG rating shows relative treadwear, traction and temperature grades. A higher treadwear number generally suggests longer expected life, while grippier performance tires often trade some longevity for handling. Check each product page for its specific grades.
Load index & speed rating
The load index and speed rating (the digits and letter after the size, such as 91Y or 95V) must meet or exceed your vehicle's requirements. Never drop below the values on your door placard.
Warranty
Mileage warranties vary by model and are stated per product. Touring tires typically carry longer treadlife coverage than dedicated performance tires.
Frequently Asked Questions
What does 225/45R18 mean? It describes a tire 225 mm wide with a sidewall height 45% of that width (about 101.2 mm), built as a radial for an 18-inch wheel. The assembled tire is roughly 25.97 inches in overall diameter and turns about 777 times per mile.
How much do 225/45R18 tires cost? Current pricing ranges from about $92.31 to $366.97 per tire, depending on the brand and model you choose.
How many 225/45R18 tires can I choose from? More than 100 fitments are in stock across over 20 brands, including Continental, Hankook, Pirelli, Nokian, Nexen, Falken, Toyo and many value labels.