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
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
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
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
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 class.
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.