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Tire Benefits
- Visually show how tires are wearing to alert driver to wear issues before they become big problems
- Provide traction without sacrificing handling
- Adds an additional layer of strength to help navigate potholes and other adverse road conditions
- Provide tread block stability to help safely navigate corners
- Improve water evacuation, providing increased wet handling and traction
- For wet and winter weather performance
- For confidence in all weather conditions, even in light snow
Tire Features
- Intelligent Maintenance Indicators
- Nitto's evolutionary 3D multiwave and 3D Interlocking sipe design
- Circumferential rubber shoulder inserts
- Larger tread blocks on the exterior of the tire
- Three wide and deep circumferential grooves
- Inside tread area design with large open grooves and high sipe density
- Combination of all season rubber compound, advanced siping technologies and water evacuating circumferential grooves
- 75,000 Mile Limited Treadwear Warranty (H/V-Rated)
- 60,000 Mile Limited Treadwear Warranty (W-Rated)
Nitto 255/55R18 XL NT421Q
The Nitto 255/55R18 XL NT421Q 255/55R18 is designed for drivers who want dependable All Season performance with a confident, predictable feel on the road. This tire is commonly selected for Passenger vehicles where comfort, traction, and durability all matter.
Quick Specs (Varies by Size)
- Size: 255/55R18 (255 width / 55 aspect ratio / 18 rim)
- Type: All Season for Passenger
- Load: 109 (up to 2271 lbs per tire)
- Load Range: XL
- Speed Rating: V
- Sidewall: BSW
- UTQG: 640 A A
What the Size 255/55R18 Means
Tire size plays a major role in how your vehicle rides, handles, and carries weight. The 255/55R18 designation refers to the tire's width, sidewall profile, and wheel diameter (18 inches). Matching your current size helps preserve ride quality and handling characteristics, while size changes may affect clearance, gearing, and load capacity.
Real-World Performance
On the road, the Nitto 255/55R18 XL NT421Q is built to provide stable handling, consistent traction, and predictable braking. Its tread design is engineered to manage water dispersion and promote even wear over time, helping drivers feel confident in daily driving situations.
Passenger & SUV Tire Considerations
For passenger cars and many SUVs, the Nitto 255/55R18 XL NT421Q focuses on ride comfort, responsive handling, and efficient road contact. Passenger-rated tires are optimized for everyday driving, offering a smoother ride and quieter operation while still maintaining reliable traction and control.
Fitment Guidance
The easiest way to confirm that 255/55R18 is correct is to look at the tires currently on your vehicle and read the size directly from the sidewall. Also make sure the load index (109) and speed rating (V) meet or exceed what you're running now. If you're unsure, we're happy to help you confirm fitment before ordering.
Care Tips to Maximize Tire Life
- Maintain proper air pressure: Check monthly to support even wear and handling.
- Rotate tires regularly: Helps extend tread life and improve consistency.
- Balance on installation: Reduces vibration and uneven wear.
- Address alignment issues early: Misalignment can shorten tire life quickly.
Why Buy This Tire From Dan the Tire Man
We make it easy to get the Nitto 255/55R18 XL NT421Q 255/55R18 with Free Shipping and knowledgeable support if you need it. Flexible payment options are also available to help you get the tires you need without delay.
FAQ
Is the Nitto 255/55R18 XL NT421Q right for my vehicle?
Fitment depends on size, load requirements, and clearance. Confirm 255/55R18, 109, and V against your current tires to ensure compatibility.
Will this tire work year-round?
Many All Season tires are suitable for year-round driving, but severe winter conditions may call for a dedicated winter tire or a 3PMSF-rated option.
Need help choosing?
Call or text us at 207-316-2258 and we'll help you confirm fitment and select the best tire for how and where you drive.