225/40R18 tires are in stock right now with 79 options spanning more than 20 brands, from premium names like Continental, Michelin and Pirelli to value-focused lines from Ironman, Lexani and Versatyre. Every order ships free, Affirm financing lets you pay over time, and a nationwide delivery network gets your tires moving fast. Browse the full tire lineup or dig into the details below to pick the right set for your car.
Shop 225/40R18 Tires In Stock
Showing 36 in stock.
What 225/40R18 tires means
The size code is a precise description of the tire's shape. Here is exactly what each number represents:
- 225 – section width of 225 mm (about 8.86 in) at the widest point of the tire.
- 40 – aspect ratio, meaning the sidewall height is 40% of the section width, which works out to 90 mm (about 3.54 in).
- R – radial construction.
- 18 – designed to mount on an 18-inch diameter wheel.
Add it up and the overall tire diameter is roughly 25.09 inches, turning about 804 revolutions per mile. Those figures matter to a buyer: the overall diameter and revolutions per mile determine speedometer and odometer accuracy, so staying close to your factory size keeps readings honest. The relatively short 3.54-inch sidewall is why this size delivers crisp steering response, while also leaving less cushion for potholes and demanding careful clearance checks in the wheel well.
Vehicles & uses
A 225/40R18 is a low-profile, 18-inch fitment commonly found on sport compacts, sport sedans and coupes running performance-oriented setups. Retailers stocking this size classify many of the offerings as passenger-car high-performance and ultra-high-performance tires, reflecting the emphasis on cornering grip and directional stability that shorter sidewalls and wider treads provide. Confirm the correct size and rating against your vehicle's door placard or owner's manual before ordering.
Brands & options in 225/40R18 tires
Premium touring and performance choices include the Pirelli Cinturato P7 (P7C2) and the all-weather Cinturato WeatherActive, plus Hankook's Ventus S1 noble2 H452.
Performance
For sporty daily driving, look at the Dunlop SP Sport 5000, the Kumho Majesty Solus KU50, and the Gt Radial CHAMPIRO UHP AS. Nexen covers multiple bases with the N Blue 4S 2, the N'Priz AH8 and the N5000 Platinum.
Value
Budget-conscious shoppers can consider the Venom Power Covert Grip ASP, the Lexani LXUHP-207, and the Versatyre CRX4000. Additional brands in this size include Falken, Toyo, Nitto, General, Michelin, BFGoodrich, Laufenn, Nokian and more.
How to choose
Season: Summer tires maximize dry and wet grip in warm weather; all-season tires balance year-round usability; winter tires are built for cold, snow and ice. Pick based on your climate and how you drive.
Treadwear & UTQG: The UTQG rating grades treadwear, traction and temperature. A higher treadwear number generally suggests longer tread life, while performance tires often trade longevity for grip. Check the specific rating on each tire's product page.
Load index & speed rating: These two figures follow the size (for example an 88 or 92 load index and a V, W or Y speed rating). Match or exceed what your vehicle requires – never go below the manufacturer's specification.
Warranty: Mileage warranties vary widely by model, so weigh the coverage against price and intended use before buying.
Frequently Asked Questions
What does 225/40R18 tires mean?
It describes a radial tire that is 225 mm wide with a sidewall height equal to 40% of that width (about 90 mm), built for an 18-inch wheel. The overall diameter is roughly 25.09 inches and it turns about 804 revolutions per mile.
How much do 225/40R18 tires cost?
Prices currently range from about $80.44 to $480.00 per tire, depending on the brand, performance level and season.
Are there many 225/40R18 options to choose from?
Yes – 79 tires are in stock in this size across more than 20 brands, covering premium, performance and value tiers.