This is the archive page for etyres’ NHTSA Tyre Ratings. These NHTSA pages contain historical data which may no longer be accurate.

NHTSA Tyre Ratings – Explanation of Tread Wear Ratings

Treadwear grades are an indication of a tyre’s relative wear rate. The higher the treadwear number is, the longer it should take for the tread to wear down.

A control tyre is assigned a grade of 100. Other tyres are compared to the control tyre. For example, a tyre grade of 200 should wear twice as long as the control tyre.

Of current tyres:

15% are rated below 200

25% are rated 201 – 300

32% are rated 301 – 400

20% are rated 401 – 500

6% are rated 501 – 600

2% are rated above 600