245/40R18 tires are in stock here with 69 options spanning roughly 20 brands, from Pirelli and Continental to Hankook, Nexen, Vogue and Lexani. Every order ships free, Affirm financing is available at checkout, and delivery is fast from a nationwide network. Prices for this size currently run from about $97.60 to $394.25 per tire, so there's a fit for budget builds and premium performance setups alike.
Shop 245/40R18 Tires In Stock
Showing 36 in stock.
What 245/40R18 tires means
The code breaks down into a few exact measurements. The 245 is the section width in millimeters (about 9.65 inches) across the widest part of the tire. The 40 is the aspect ratio, meaning the sidewall height is 40% of that width — here 98 mm, or roughly 3.86 inches. The R means radial construction, and 18 is the rim diameter in inches these tires mount to.
Add it up and the overall tire diameter is about 25.72 inches, turning roughly 784 revolutions per mile. Those numbers matter: the diameter keeps your speedometer and odometer reading correctly, the short 3.86-inch sidewall trades some ride comfort for sharper steering response, and the overall size determines clearance inside the fender and against brakes. Staying within this size keeps everything calibrated the way the vehicle expects.
Vehicles & uses
The 245/40R18 is a wide, low-profile fitment that generally serves performance-oriented sedans, coupes and sport compacts. The relatively short sidewall and broad footprint favor grip and responsive handling for drivers who want premium driving dynamics, which is why this size is a popular factory and upgrade choice on sporty cars. Always confirm the size against your door placard or owner's manual before buying.
Brands & options in 245/40R18 tires
You'll find broad selection across every price tier. On the premium and performance side, Pirelli tires include the Cinturato P7 (P7C2) and the Cinturato WeatherActive, while the Continental ContiProContact and the Hankook Ventus S1 evo2 K117 round out the sport touring picks.
For performance value, Sumitomo offers the HTR Z5, Gt Radial brings the CHAMPIRO UHP AS, and Nexen tires cover both the all-season N Blue 4S 2 and the N'Fera AU7. On the value end, Lexani tires list the RFX Plus and LXUHP-207, alongside Venom Power and a distinctive Vogue Custom Built Radial. Additional brands in this size include Falken, Toyo, Nitto, Kumho, General, Dunlop, Nokian, Hercules and Laufenn.
How to choose
Season
Pick summer tires for maximum dry and warm-weather grip, all-season tires for year-round versatility, or dedicated winter tires if you face snow and cold regularly. Match the type to your climate rather than compromising with one tire for extreme conditions.
Treadwear & UTQG
The UTQG rating covers treadwear, traction and temperature. A higher treadwear number generally suggests longer expected life, while performance-focused tires often trade tread longevity for grip.
Load index & speed rating
The load index and speed rating follow the size on the sidewall. Meet or exceed the values your vehicle specifies so the tire can safely carry weight at speed. Never choose a lower rating than the original equipment.
Warranty
Check each model's mileage warranty where offered; it reflects the expected tread life and gives a useful comparison point between options.
Frequently Asked Questions
What does 245/40R18 mean?
It describes a tire 245 mm wide with a sidewall 40% of that width (about 98 mm), built with radial construction to fit an 18-inch wheel. The overall diameter is roughly 25.72 inches.
How much do 245/40R18 tires cost?
Prices currently range from about $97.60 to $394.25 per tire depending on brand, tier and performance category.
How many 245/40R18 tires are available?
There are 69 in stock across roughly 20 brands, including Pirelli, Continental, Hankook, Nexen, Vogue and Lexani. You can also browse all tires to compare sizes.