Nitto NT421Q

Nitto NT421Q Tire
Nitto logo
77
Spec Score

Strong spec profile

Estimated from manufacturer specs (UTQG, warranty, speed rating)

Scouter Analysis

The Nitto NT421Q is a solid choice for drivers seeking a comfortable and quiet ride with reliable dry grip. Its 640 UTQG treadwear rating and 60,000-mile warranty suggest it can handle long-term use, although the warranty falls slightly short of the category average. The tire's dry grip score of 8.5 is a standout feature, offering better traction than many competitors in dry conditions. In the grand touring all-season category, comfort and noise are top priorities, and the NT421Q meets the benchmarks with scores of 8 in both areas. While its wet grip score of 7.5 is competitive, it doesn't quite match the wet performance of some rivals like the BFGoodrich Advantage Control. Additionally, the absence of a 3PMSF rating means it's not the best choice for severe winter conditions. Compared to competitors like the General AltiMAX RT45 and Vredestein Quatrac Pro+, the NT421Q offers a balanced performance with a focus on comfort and durability. However, if you frequently drive in wet or snowy conditions, you might consider options with better wet grip or a 3PMSF rating. Overall, the NT421Q is best suited for drivers in moderate climates who value comfort and dry performance over winter capability. If severe winter traction is a concern, look towards an all-weather option with a 3PMSF rating instead.

Spec-based analysis — see our methodology.

Pros
Comfort and noise scores of 8 match the category benchmarks, making for a smooth and quiet ride.
Treadwear rating of 640 and a 60,000-mile warranty suggest above-average durability compared to the category average UTQG of 574.
Dry grip score of 8.5 exceeds the category average of 7.6, providing reliable traction in dry conditions.
Cons
Lacks a 3PMSF rating, making it less suitable for drivers who encounter severe winter conditions.
Treadwear warranty of 60,000 miles is slightly below the category average of 62,053 miles, which may affect long-term cost-efficiency.
The BFGoodrich Advantage Control offers a slightly better wet grip rating, which could be a consideration for those prioritizing wet performance.
No 3PMSF rating, which limits its capability in severe winter conditions compared to some all-weather competitors.

Performance Profile

Estimated from manufacturer specs — not measured test data.

WetExcellentDryStrongNoiseStrongTreadExcellentComfortExcellentSnowFair

Technical Specifications

640Wear
ATraction
ATemp
Load / Speed
106H
Warranty
75k mi
Type
Passenger

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Available Sizes & Specs

SizeLoad IndexSpeed RatingUTQGMax Load (lbs)Max PSIWeight (lbs)
225/65R17106H640 A A———
235/55R20105W640 A A———
235/60R18107H640 A A———
255/55R18109R640 A A0037
255/55R20110H640 A A———
255/60R19113R640 A A0040
265/50R19110V640 A A———
275/45R20110R560 A A0037
275/55R17109R640 A A0039

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