Nitto NT421Q Tire Review & Buying Guide

Nitto is a good quality tire brand. It is the sub-brand of Toyo, which guarantees the quality and price point of all Nitto models.

If you are looking for the best high performance and performance tires for your SUV – with all season traction – the Nitto NT421Q is an excellent choice.

Take a look and read through our review to see all the benefits you can get by purchasing a set of Nitto NT421Q tires.

Table of Contents

Quick Review

• Season: All Season
• Type: Performance and High Performance
• Car Type: SUVs
• Run Flat: NO
• In Stock: No

Are Nitto NT421Q Tires Good?

The Nitto NT421Q is an excellent high speed, all season tire. Its mileage warranty is either 60,000 or 75,000, depending on the speed rating. The tire ensures great all weather traction, while also maintaining its controllability. If you are looking for a new set for your SUV, you cannot go wrong with the Nitto NT421Q.

Nitto NT421Q Tire Review

The Nitto NT421Q is an excellent model, which is available for purchase in both performance and high performance variations. Additionally, it offers exceptional all season traction for your crossover or SUV.

Let’s take a look at how the Nitto NT421Q actually performs.

The tire features an asymmetric tread design, without optimally placed tread blocks and siping details. This footprint is combined with the all season compound to ensure exceptional year round traction. The angled groove and detailed siping pattern enable the tire to significantly improve its grip on the road surface with the use of additional biting edges. On the other hand, the durable compound manages to keep its flexibility with the stronger rubber materials. As a result, the Nitto NT421Q promotes a secure dry, wet, and even winter weather surface grip.

Interestingly, this Nitto model utilizes a tread design which is usually saved for winter tires. Nitto’s special siping technology helps to greatly enhance the winter weather, ice and snow traction. This is generally only found on winter models. By adding this tread detail to the Nitto NT421Q, the manufacturer created an exceptional year round tire model.

This model also uses its three circumferential grooves and multiple angled lateral grooves to further enhance the wet weather traction. These tread elements effectively channel water and slush away from the footprint, preventing them from cutting off the tire’s surface contact. In other words, the groove pattern improves the hydroplaning resistance. Hydroplaning is one of the most dangerous road hazards, which can easily have a catastrophic outcome. By reinforcing the Nitto NT421Q’s wet traction, this model guarantees a truly secure performance throughout the year.

Nitto offers an exceptional tread wear warranty with the Nitto NT421Q. Depending on the speed rating of the specific tire size you need you may receive a 60,000 mile (W speed rated sizes) or a 75,000 mile (H and V speed rated sizes) treadwear warranty. This lengthened tread life is ensured with the tire’s asymmetric tread design. The optimal block placement and the flat footprint stabilize the tread elements, enabling the tire to equally circulate the driving pressure. This combats premature and irregular wear formations, greatly upgrading the tire’s overall service life.

The tire also features Intelligent Maintenance Indicators along its tread area. These indicators are placed along the tread area, on the walls of the circumferential grooves. They are basically a visual tread wear monitoring system, which shows the tread wear manner across the footprint. The Intelligent Maintenance Indicators of the Nitto NT421Q enable the driver to notice and identify irregular wear formations. This allows the driver to fix any noticeable issues with the vehicle’s alignment, before the tires develop an irregular wear manner.

Precise handling and maneuvering are also promoted with the Nitto NT421Q. The tread design and the extra layer of strength added to the shoulder area work together to improve the tire’s surface contact. This guarantees the tire’s close and consistent contact with the road during its performance, which boosts the steering responsiveness and the driving stability. Furthermore, the outer shoulder’s ideal block pattern allows the tire’s secure cornering. These tread elements, with the siping detail, create extra biting edges to increase the cornering and maneuvering power, allowing the driver to have more control over the vehicle during its performance.

The Nitto NT421Q’s high speed durability is ensured. The asymmetric tread design and the all season compound enhance the high speed performing ability. They allow the tire to optimize the pressure build-up across its footprint – by preventing it. The tire’s reinforced steel belt and nylon structure keeps the ideal tire shape, which further optimizes the high speed durability. By easing the driving pressure off the tire, no extra weight is placed on the tire during its high speed performance. In this manner, the tire is able to ensure a secure high speed ability.

A quiet and comfortable driving experience is also ensured. The Nitto NT421Q utilizes the polyester cord body and the Quiet Serration Technology to greatly lower the road noise and vibrations levels. The polyester cord body keeps the ideal tire shape, ensuring the tire’s close road contact. This absorbs the shock of driving, preventing road vibrations from reaching the vehicle’s cabin. The tread’s Quiet Serration Technology lowers the road noise levels by weakening the sound waves. In this manner, they prevent road disturbances from ruining the passengers’ driving enjoyment. This combination guarantees the tire’s exceptional comfort levels.

Pros:

• True all season traction
• Exceptional treadwear warranty
• High driving comfort levels
• Optimized controllability and maneuvering

Cons:

• This model is a bit pricey

Product Information

The Nitto NT421Q is available in sizes for crossover vehicles and SUVs. The size range for this model is between 17 and 22-inch rim diameters, which come with H, V, and W speed ratings. The tire is perfect for SUVs, durability-wise.

This model ensures exceptional year round traction, optimal controllability, upgrading cornering ability, a longer tread life, and superb comfort levels. The combination of these features is what makes the Nitto NT421Q such an excellent tire model.

Furthermore, Nitto offers a 60,000 mile and 75,000 mile treadwear warranty. W speed rated sizes of the Nitto NT421Q come with a 60,000 mile treadwear warranty, while a 75,000 mile treadwear warranty is given with H and V speed rated sizes.

This performance and high performance model guarantees a safer high speed durability. Its tread design and stronger internal structure allow the tire to greatly improve its high speed handling and maneuvering capability. However, this structure and tread design also ensures the tire’s great comfort levels.

Is the Nitto NT421Q the Right Tire for You?

Whether the Nitto NT421Q is the right tire for you or not depends on a few things.

If you are looking for SUV tires, the Nitto NT421Q is an excellent choice. It combines high speed durability and controllability with higher comfort levels, as well as its better all weather traction. The treadwear warranty is also a great plus.

However, if you do not need the benefit of the Nitto NT421Q’s high speed performance, you might want to check out other Nitto tires we offer on Priority Tire.

• Enhanced controllability
• Maintenance Indicators
• Hydroplaning resistance
• Improved cornering ability

Frequently Asked Questions

Who Makes Nitto NT421Q Tires?

Nitto NT421Q tires are manufactured under the Nitto brand, which belongs to Toyo Tire Corporation. These tires are made in Japanese, Chinese, and US factories, with the best technologies available. Nitto tires go through strict quality checks to ensure their performing durability and driving safety.

Are Nitto Tires Made in China?

Nitto tires are manufactured in factories owned by the Toyo Tire Corporation. These factories are located in the United States, China, Malaysia, and Japan. However, all the tires are quality and safety checked, no matter in which factory they are built. All Nitto tires offer the same superb quality.

Are Nitto and Toyo the Same Company?

Both Nitto and Toyo belong to the Toyo Tire Corporation. Therefore, Nitto is the sub-brand of Toyo. Nitto tires are manufactured using the same rubber materials as Toyo tires, but they do not share models. Nitto models have their own tread designs and structural uniqueness, making them a different brand.