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SumitomoHTR Z5
  • SumitomoHTR Z5
  • SumitomoHTR Z5
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The HTR Z5 is Sumitomo's Ultra High Performance Summer tire designed for the drivers of sports cars, sporty coupes and performance sedans looking for responsive high-speed handling and reliable traction in warm, dry and wet conditions. Like all Ultra High Performance Summer tires, the HTR Z5 is not intended to be serviced, stored nor driven in near- and below-freezing temperatures, through snow or on ice.

An aggressive, summer compound is molded into the HTR Z5's asymmetric, five-rib tread pattern. A continuous center rib aids stability and improves steering response, while the substantial shoulders improve lateral grip. Notches in the intermediate and center ribs combine with the tread compound for traction in wet conditions, and the four wide, circumferential grooves and lateral shoulder grooves evacuate standing water from the footprint for hydroplaning resistance.

The internal construction of the HTR Z5 consists of a two-ply, polyester casing supporting two high-rigidity steel belts. A full-width, nylon reinforcement ply improves high-speed stability, and a high-modulus bead insert strengthens the sidewall to aid handling.

Note:Tires exposed to temperatures of 20 degrees F (-7 degrees C) or lower must be permitted to gradually return to temperatures of at least 40 degrees F (5 degrees C) for at least 24 hours before they are flexed in any manner, such as by adjusting inflation pressures, mounting them on wheels or using them to support, roll or drive a vehicle.

Flexing of the specialized rubber compounds used in Ultra High Performance Summer tires during cold-weather use can result in irreversible compound cracking. Compound cracking is not a warrantable condition because it occurs as the result of improper use or storage. Tires exhibiting compound cracking must be replaced.

Tire Rack Test Results Sumitomo HTR Z5

Ultra High Performance vs. Max Performance Summer Tires – 2025 Test 3(27:40)

When these two wildly popular summer performance categories go head-to-head, it gives us a deeper look into what truly separates them. That helps you find the best tire for what you prioritize, whether that be on-road comfort with sporty handling or if you’ll trade off some manners for even more handling. In a packed field, with new products and first-time tires in our revamped testing platform, there were sure to be some surprises…and there were! And as always starting in 2025, you’ll see last year’s results added into the mix to see where they all stand.

Read the Full Test Report

Ratings Charts & Reviews Sumitomo HTR Z5

Tire Category: Ultra High Performance Summer

Consumer Surveys

 
Best in Category
Miles Reported
Recommended
Treadwear
Sumitomo HTR Z5
Good
96%
837K
8.0 - Good
8.1 - Good
8.2 Hydroplaning Resistance
8.1 Wet Traction
8.6 - Excellent
8.6 Corner Stability
8.8 Dry Traction
8.6 Steering Response
N/A
N/A Light Snow Traction
N/A Deep Snow Traction
N/A Ice Traction
8.4 - Good
8.5 Ride Quality
8.4 Noise
8.0 - Good

Sumitomo HTR Z5 Reviews

Customers praise the Sumitomo HTR Z5 for outstanding dry traction (9-10 scores) and confident grip, with responsive handling in corners. Wet performance impresses with strong hydroplaning resistance (8-10), though a few note minor variability. Ride comfort receives high marks for smoothness and low noise, enhancing daily driving. Treadwear is generally rated positively (7-10), with many users reporting durable performance suited for summer use. A standout choice for drivers prioritizing dry and wet capabilities in an ultra-high-performance summer tire.

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Customers Like:

78 reviews mention "Wet Traction"

  • 69 positive
  • 9 negative

Most customers rate wet traction between 8-10, praising excellent grip and hydroplaning resistance. The Sumitomo HTR Z5 delivers confident wet performance expected from summer tires. A few lower scores exist, but high marks dominate.

April 01, 2025
(Verified Purchase)
4.8 out of 5 Star Rating
4.8 out of 5

...Wet traction is very good and I don't sense any hydroplaning unless the roads are extremely wet.

Good value for a summer tire. Overall the treadwear is good. Due to the staggered tire size on my car, I cannot do a traditional rotation. Steering input is very responsive. I do have a bit more front weight than the traditional Boxster due to some mods in the back. This gives me very responsive cornering with little to no under steer. Wet traction is very good and I don't sense any hydroplaning unless the roads are extremely wet.

Vehicle: 2003 Porsche Boxster
Miles Driven on Tires: 8,000
Driving Conditions: Mostly Highway
Location: SOBIESKI, WI
Driving Style: Spirited

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107 reviews mention "Dry Traction"

  • 100 positive
  • 7 negative

Customers overwhelmingly rate the Sumitomo HTR Z5's dry traction as excellent, with nearly all scores between 9-10. High marks highlight exceptional grip and responsive handling, delivering confident performance in dry conditions as expected from an Ultra High Performance Summer tire.

August 02, 2025
(Verified Purchase)
4.9 out of 5 Star Rating
4.9 out of 5

...Together, these tires offer great wet and dry traction along with a responsive steering feel. These tires perform and ride just as good as they look.

This is the second set of Sumitomo HTR Z5 front tires purchased for the 2007 Mustang GT and they have performed excellently. We run the Sumitomo HTR tires in the rear, just a bigger size for the staggered wheel setup. Together, these tires offer great wet and dry traction along with a responsive steering feel. These tires perform and ride just as good as they look.

Vehicle: 2007 Ford Mustang GT Coupe
Miles Driven on Tires: 20,000
Driving Conditions: Combined Highway/City
Location: CLARKSVILLE, TN
Driving Style: Average

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February 13, 2024
(Verified Purchase)
4.9 out of 5 Star Rating
4.9 out of 5

...They offer excellent performance and a great ride in wet and dry road conditions.

These tires are a great alternative for those looking to purchase a quality tire for a sports car without spending a small fortune. They offer excellent performance and a great ride in wet and dry road conditions.

Vehicle: 2007 Ford Mustang GT Coupe
Miles Driven on Tires: 8,000
Driving Conditions: Combined Highway/City
Location: CLARKSVILLE, TN
Driving Style: Average

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108 reviews mention "Ride Quality"

  • 100 positive
  • 8 negative

Most customers rate the Sumitomo HTR Z5's comfort as excellent, with scores of 9-10 for ride quality and noise levels. High marks highlight its ability to deliver a smooth, quiet driving experience expected from ultra high performance summer tires.

August 29, 2024
(Verified Purchase)
4.9 out of 5 Star Rating
4.9 out of 5

...The ride quality and noise levels are great, while providing excellent response to the driver.

I have used these tires on the front of my 2007 Mustang GT, and they have performed well over the past four years. This is a second set for the front, and I run the same tire (just a bigger size) in the rear, and I have been pleased with their wet and dry performance. The ride quality and noise levels are great, while providing excellent response to the driver.

Vehicle: 2007 Ford Mustang GT Coupe
Miles Driven on Tires: 55,000
Driving Conditions: Combined Highway/City
Location: CLARKSVILLE, TN
Driving Style: Average

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July 10, 2024
(Verified Purchase)
4.3 out of 5 Star Rating
4.3 out of 5

...More of a comfort than a performance, hard cornering tire. Very quiet.

1st 50 miles tires felt loose. Are now tracking nicly. More of a comfort than a performance , hard cornering tire. Very quiet.

Vehicle: 2002 Porsche 911 Carrera Targa
Miles Driven on Tires: 500
Driving Conditions: Combined Highway/City
Location: MINNETONKA, MN
Driving Style: Spirited

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July 14, 2023
(Verified Purchase)
3.3 out of 5 Star Rating
3.3 out of 5

...They're quiet, comfortable, and seem to be wearing nicely...

These are my “mess around” tires that I don’t really care about since they’re so cheap relative to all other options. I purchased these so I wouldn’t feel bad power sliding around with them.

They’re not as good as a PS4S or Indy500 (my benchmark 300tw tires). They grease out very quickly and they have soft sidewalls making steering input a bit dull.

That said, they’re so cheap I think they’d be perfectly adequate for a daily driver tire that’s able to preform better than an all-season. They’re quiet, comfortable, and seem to be wearing nicely.

I’m not sure if I’d purchase these again. If they didn’t handle heat so poorly I think they’d be acceptable at this price range. Don’t plan on driving more than 7/10ths with these tires.

Vehicle: 2018 BMW M2 Coupe
Miles Driven on Tires: 2,000
Driving Conditions: Track/Autocross
Location: ESCONDIDO, CA
Driving Style: Spirited

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91 reviews mention "Treadwear"

  • 77 positive
  • 14 negative

Most customers rate treadwear highly with scores of 8-10, highlighting excellent durability for a performance-focused summer tire. A few lower scores suggest varied experiences, but the majority praise its long-lasting capability in intended conditions.

February 17, 2026
(Verified Purchase)
4.9 out of 5 Star Rating
4.9 out of 5

...Longer wear than other summer tires I've owned.

My second set - happy with them. Longer wear than other summer tires I’ve owned.

Vehicle: 2014 Porsche Boxster
Miles Driven on Tires: 10,000
Driving Conditions: Combined Highway/City
Location: ANKENY, IA
Driving Style: Spirited

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April 01, 2025
(Verified Purchase)
4.8 out of 5 Star Rating
4.8 out of 5

Good value for a summer tire. Overall the treadwear is good...

Good value for a summer tire. Overall the treadwear is good. Due to the staggered tire size on my car, I cannot do a traditional rotation. Steering input is very responsive. I do have a bit more front weight than the traditional Boxster due to some mods in the back. This gives me very responsive cornering with little to no under steer. Wet traction is very good and I don't sense any hydroplaning unless the roads are extremely wet.

Vehicle: 2003 Porsche Boxster
Miles Driven on Tires: 8,000
Driving Conditions: Mostly Highway
Location: SOBIESKI, WI
Driving Style: Spirited

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June 14, 2023
(Verified Purchase)
4.4 out of 5 Star Rating
4.4 out of 5

...Half the price of the competition, twice the tread life and overall 99% of the dedicated track day tires...

My fourth set of Sumitomo tires on 2, 2000 Porsche Boxter S's that I've owned. Half the price of the competition, twice the tread life and overall 99% of the dedicated track day tires. What's not to like?

Vehicle: 2000 Porsche Boxster S
Miles Driven on Tires: 5,000
Driving Conditions: Combined Highway/City
Location: SEBASTOPOL, CA
Driving Style: Spirited

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Consumer Reviews

Media Gallery

Ultra High Performance vs. Max Performance Summer Tires – 2025 Test 3(27:40)

When these two wildly popular summer performance categories go head-to-head, it gives us a deeper look into what truly separates them. That helps you find the best tire for what you prioritize, whether that be on-road comfort with sporty handling or if you’ll trade off some manners for even more handling. In a packed field, with new products and first-time tires in our revamped testing platform, there were sure to be some surprises…and there were! And as always starting in 2025, you’ll see last year’s results added into the mix to see where they all stand.

Read the Full Test Report

Testing Two Ultra High Performance Summer Tires 2019: Sumitomo HTR Z5(01:40)

Sumitomo recently released the HTR Z5 to continue the popular “HTR Z” line. We tested it to find out how this new player compares to some of the best in the Ultra High Performance Summer category.

Read the Full Test Report

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