Nitto NT421Q Premier All-Season Tire for CUVs & SUVs

The Nitto NT421Q is a purpose-built, premier all-season tire engineered specifically for crossover utility vehicles (CUVs) and SUVs. Designed to deliver confident wet and dry traction, responsive handling, long tread life, and everyday ride comfort, the NT421Q keeps drivers safely connected to the road through rain, shine, and light winter conditions alike.

Advanced All-Season Traction Technology

• 3D Multiwave & Interlocking Sipe Design: Nitto's three-dimensional siping technology — traditionally reserved for dedicated winter tires — locks tread blocks together to boost rigidity and all-weather grip while resisting unwanted flex and irregular wear.
• Asymmetric Tread Pattern: A uniquely styled asymmetric tread design delivers a quiet, comfortable ride while optimizing all-season traction and cornering stability across all four rotation positions.
• Three Wide Circumferential Grooves: Deep water-evacuating channels efficiently clear moisture from the contact patch to improve wet handling performance and significantly reduce hydroplaning risk.
• High-Density Inner Sipe Configuration: Increased sipe density in the inner tread zone, combined with large open lateral grooves, maximizes biting edges for enhanced performance in wet and light winter conditions.

Durability & Ride Quality

• Circumferential Rubber Shoulder Inserts: Unique rubber inserts in the tire shoulders provide added sidewall strength and structural rigidity while absorbing road impacts for a smooth, comfortable ride.
• Large Exterior Tread Blocks: Wider outer tread blocks maximize road contact surface area for improved cornering grip, tread block stability, and precise handling response.
• Intelligent Wear Indicators: Easy-to-read tread wear indicators placed within all three circumferential grooves alert drivers to remaining tread depth and can provide early warning of irregular wear and alignment issues.
• All-Season Rubber Compound: Engineered to maintain flexibility and grip across a wide temperature range for reliable year-round performance in both warm and cold conditions.
• Quiet Serration Technology: Variable pitch tread blocks, developed through Nitto's proprietary computer simulation process and exclusive Quiet Serration Technology, break up repetitive tread noise patterns for a noticeably quieter highway ride.

Class-Leading Treadwear Warranty

The NT421Q line is backed by a 75,000-mile limited treadwear warranty for H- and V-speed-rated sizes, and a 60,000-mile limited treadwear warranty for W-speed-rated sizes — reflecting Nitto's confidence in the long-term durability of this tire line.

Available across a wide range of sizes to fit today's most popular crossovers and SUVs, the Nitto NT421Q delivers the all-season confidence, premium ride quality, and distinctive style that modern CUV and SUV drivers demand.