Sumitomo

HTR Z5

Name: Sumitomo HTR Z5 255/30ZR20 XL
Brand: Sumitomo
SKU: HTR22
Price: 164.24 USD
Availability: InStock

255/30ZR20 XL

$164.24/tire $218.99

Set of 4: $656.96

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Specifications

Size	255/30ZR20 XL HTR Z5
Width	255 mm
Aspect ratio	30
Rim diameter	R20
Load index	92
Speed rating	Y
Load range	XL

UTQG	320 AA A
Tread depth	10/32"
Weight	26.5 lbs
Max pressure	50 psi
Severe snow (3PMSF)	No
Run-flat	No

About the Sumitomo HTR Z5

Summer Ultra High Performance Passenger Car tire.

Features

* Advanced tread compound* Wide circumferential grooves* Optimized tread rigidity* More than 50 sizes, from 17”- 20”, in Y speed ratings* Free Defect Replacement for Life of Usable Tread

Benefits

* Enables quick and powerful wet braking* Enhance wet road traction and boost hydroplaning resistance* Provides predictable high-speed stability* Excellent segment coverage

Understanding the 255/30ZR20 XL size

In the size code 255/30R20, 255 is the section width in millimetres (about 10"). 30 is the aspect ratio — the sidewall height is 30% of the width, or roughly 76.5 mm. R20 means radial construction on a 20-inch wheel, giving an approximate overall diameter of 26".

The load index 92 means each tire supports up to 1,389 lbs — about 5,556 lbs across a full set of four. The speed symbol Y certifies the tire to 186 mph under its rated load. Always match or exceed the load index and speed rating listed on your vehicle's door-jamb placard.

Tread life and grip ratings

This tire carries a UTQG rating of 320 AA A. The treadwear grade of 320 is a relative durability score — a grade of 200 is expected to last roughly twice as long as a grade of 100 under the same controlled test. Traction grade AA measures straight-line wet stopping grip (AA is highest, then A, B and C). Temperature grade A reflects heat resistance at sustained speed (A is highest).

Price and value

At $164.24 per tire, a full set of four costs $656.96. That is about 42% below the average price of the 19 tires we stock in this size.

Frequently asked questions

What does the tire size 255/30R20 mean?

255 is the section width in millimetres, 30 is the aspect ratio (sidewall height as a percentage of width, about 76.5 mm), and R20 indicates radial construction for a 20-inch wheel. Overall diameter is approximately 26 inches.

What are the load and speed ratings of the Sumitomo HTR Z5 255/30ZR20 XL?

Its load index of 92 allows up to 1,389 lbs per tire. Its speed rating of Y is certified to 186 mph. Check your door-jamb placard and do not fit a tire rated below the vehicle's requirement.

How much does a set of 4 Sumitomo HTR Z5 255/30ZR20 XL tires cost?

A single tire is $164.24 and a set of four is $656.96.

Does the HTR Z5 come in other sizes?

Yes — we stock 53 additional HTR Z5 sizes besides 255/30ZR20 XL. Fit only a size approved for your vehicle.