The all-new NT421Q from Nitto is the company's latest ultra-high performance tire that is built specifically as
a replacement model for owners of crossovers and sport utility vehicles. Sporting all-season traction, the NT421Q
is also all about delivering exceptional handling to go with a more smooth and comfortable ride quality.
It all begins with the all-season tread compound that not only features silica for added grip and treadwear, but
a unique high-grip polymer and wear-oriented polymer. Combined, they provide increased handling performance and
enhanced overall stability and safety.
Dry traction and cornering grip are increased from the addition of rubber inserts in the shoulders that give the
sidewalls added strength and allow the tire to stand up to higher cornering forces. It does this without
sacrificing ride comfort, which is something that plagues many other tires with stiffer sidewalls.
Wet and winter traction is another strong point on the NT421Q. Wider and deeper circumferential grooves channel
away water from under the tread and reduce the risk of hydroplaning. It adds up to a more confident feeling behind
the wheel in even the heaviest of rains.
For winter traction and grip, Nitto utilizes an advanced siping technology that is normally only found on
dedicated winter tires. The result is a tire that stands up quite well in all types of winter weather.
When it comes to ride comfort tread noise, Nitto has used what they call Quiet Serration Technology in the tire
grooves that works to lower road noise. It breaks up the reverberation and repetition that you often experience on
the road to quiet the sounds and make the ride more enjoyable. Add in the variable pitch tread block elements and
you have a tire that is ultimately one of the quietest in this class.
Inside the tire you'll find two steel belts with nylon reinforcement for added strength and durability. A
polyester cord body further enhances ride comfort. Nitto has also added Intelligent Maintenance Indicators on the
tire that is designed to show you how the tires are wearing at all times. It gives you the opportunity to see any
irregular wear that may indicate problems with the tire or possible alignment issues with your vehicle.
Nitto offers a wide array of sizes ranging from 17-22 inches, and speed ratings of H, V and W. A 75,000 or
60,000 mile tread warranty, depending on the tire's speed rating, is also included.
Dry, wet and winter traction is among best in class
Excellent handling and cornering grip
Comfortable and quiet ride
Too early to know about tread life but will update as time goes by
Nitto has produced an excellent ultra-high performance tire in the NT421Q. We were wondering how much longer it
would be before they came out with a model for this tire segment, and they certainly have not disappointed. Not
only is this tire aggressively attractive, but its performance characteristics measure up to any tire in this
Perhaps even more impressive is how much effort has been put into making this model as quiet and comfortable as
it is. It looks to have paid off very well. Overall, if you're looking for a high performance tire for your
crossover or SUV, this is one that would be hard to beat.
Nitto provides a 75,000 mile tread warranty on H and V-speed rated sizes, and 60,000 miles on W-speed rated
sizes. Tire uniformity is guaranteed for the first 1/32 inch of wear.
Materials and workmanship are backed for 5-years and include free replacement within the first 25% of wear. The
amount is prorated for the remaining time period or until the tire reaches its final 2/32 inch of tread depth.