The efficiency class label evaluated based on customer preferences.
Delticom centralized survey results from more than 40.000 customers from 15 European countries and created this index.
# Nitto NT421A – High-Performance All-Season Tire Engineered for drivers who demand reliable performance in diverse conditions, the Nitto NT421A delivers confident handling and a smooth, quiet ride. Designed for passenger cars, sporty coupes, and performance sedans, this all-season tire balances aggressive styling with everyday comfort. Whether you're navigating city streets or cruising on the highway, the NT421A offers strong wet and dry traction, thanks to its optimized tread pattern and advanced rubber compound. It’s built to provide consistent performance throughout its lifespan, making it a smart long-term investment. Looking for a tire that handles rain-covered roads and dry pavement with equal confidence? The NT421A delivers dependable grip year-round, without sacrificing ride quality. Want a tire that wears evenly and supports responsive handling? Its rigid shoulder blocks and stabilized tread design help promote even wear and sharper steering response.
EU Tyre Label and Efficiency Classes
The European Union has introduced the EU Tyre Label by Regulation (No. 1222/2009) identically and bindingly for all EU member states. It applies to passenger car tyres, light commercial vehicle tyres and heavy commercial vehicle tyres produced after 01.07.2012.
Three different areas are tested: rolling resistance, wet grip and the rolling noise the tyre makes on the road.
The following are not affected by the EU Tyre Label: retreaded tyres, professional off-road tyres, racing tyres, tyres with additional devices to improve traction such as spiked tyres, T-type emergency tyres, special tyres for fitting to vehicles first registered before 1 October 1990, tyres with a maximum authorised speed of 80 km/h, tyres for rims with a nominal diameter of 254 mm or less or 635 mm or more.
With this regulation, the European Union is pursuing the goal of promoting economic and ecological efficiency in road traffic as well as increasing road safety on the one hand, and on the other hand, granting consumers more product transparency and at the same time serving as an active decision-making aid.
Already during the incorporation, experts criticise the fact that the EU Tyre Label unfortunately only shows a few product characteristics. Apart from rolling resistance, wet grip and rolling noise, which are the main focus of EU tyre labelling, tyres have much more important and safety-relevant product characteristics, such as aquaplaning properties, driving stability, service life, braking properties on dry and wet roads, behaviour in wintry conditions, etc.
Tyre manufacturers point out that test results from various institutions and journals remain an important information medium for the end consumer. These tests usually focus on further safety-relevant product characteristics besides the EU standard qualifications for tyre labelling, which are always important for the final customer.
Brand
Nitto
Model
NT421A
Dimension
235/50 R18 97V
Width
235
Tyre profile
50
Construction type
R
Tyre size
18
Tyre load index
97
Speed Rating
(V)
With/Without Valve (TT/TL)
Tyre requires tube
M/C
No
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