Prometer tire treadwear ratings

Quick answer: NHTSA's UTQG data lists 19 Prometer tire lines. The highest median treadwear grade is 620 (Avista); the lowest is 200 (SX-1 (Y RATED)). Treadwear is a relative grade, not a mileage promise.

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Rank	Line	Treadwear	Range	Percentile*	Traction	Temp.	Records
1	Avista	620Treadwear	620–700	90	Traction A	Temp B	3
2	SX-608	460Treadwear	320–460	62	Traction A	Temp A	7
3	SX-608 (H RATED)	460Treadwear	460	62	Traction A	Temp A	1
4	SOLAR 4XS+	440Treadwear	440	54	Traction A	Temp B	1
5	SOLAR 4XS+ (H and V rating)	440Treadwear	440	54	Traction A	Temp A	1
6	Astra	420Treadwear	420	50	Traction A	Temp B	1
7	MAXIMA RADIAL GTS (T)	420Treadwear	420	50	Traction A	Temp B	1
8	S990 Performance X/P	420Treadwear	420	50	Traction AA	Temp A	1
9	A/S	400Treadwear	400	42	Traction B	Temp C	1
10	SOLAR 4XS (S, T rating)	400Treadwear	400	42	Traction A	Temp B	1
11	SX-1 (H & V RATED)	340Treadwear	340	31	Traction A	Temp A	1
12	SX-1EVO	340Treadwear	340	31	Traction A	Temp A	1
13	SATELLITE III	320Treadwear	320	26	Traction B	Temp B	1
14	SPECTRUM METRIC AS	320Treadwear	320	26	Traction B	Temp B	1
15	PERFORMANCE AS (H)	300Treadwear	300	19	Traction A	Temp A	1
16	PERFORMANCE AS (T)	300Treadwear	300	19	Traction A	Temp B	1
17	SX-608 (V RATED)	260Treadwear	200–320	13	Traction A	Temp A	2
18	PERFORMANCE AS (V)	220Treadwear	220	8	Traction A	Temp A	1
19	SX-1 (Y RATED)	200Treadwear	200	5	Traction AA	Temp A	1

*Percentile = share of all 3,023 lines with a lower median treadwear. Only lines with a linked name have their own page so far; more are added in stages.

Source: NHTSA tire ratings API, 2026-10-25. Methodology.

Guides that explain these numbers

What does a tire treadwear rating mean?UTQG basics
Treadwear rating vs. mileage warrantyTreadwear vs. mileage
How to find the longest-lasting tires for your sizeChoosing

Last updated: 2026-10-25 · Data: NHTSA tire ratings (UTQG) API, pulled 2026-10-25. 7,628 records.