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.
El neumático HTR Z5 de Sumitomo pertenece a la categoría: Ultra Alto Rendimiento Para Verano y fue diseñado para conductores de autos deportivos, cupé deportivo y sedanes de rendimiento, que buscan una maniobrabilidad responsiva y tracción confiable en condiciones calurosas, secas y mojadas. Como todo neumático de Ultra Alto Rendimiento Para Verano, el HTR Z5, no fue diseñado para ser reparado, guardado o utilizado en temperaturas cercanas al nivel de congelación o superficies con hielo o nieve.
Un compuesto de caucho agresivo para verano, es moldeado en un patrón asimétrico de cinco segmentos. Un segmento central continuo ayuda a la estabilidad y mejora la respuesta al girar el volante, mientras que hombros sólidos aumentan el agarre lateral. Hendiduras en el segmento central e intermedio combinadas con el compuesto de caucho de la huella, mejoran la tracción sobre superficies mojadas. Cuatro canales circunferenciales anchos y ranuras laterales, evacuan el agua estancada del área de contacto con la carretera, para aumentar la resistencia al deslizamiento sobre agua (hydroplaning).
La construcción interna del HTR Z5 cuenta con una estructura de dos capas de poliéster soportando dos correas de acero de alta rigidez. Una capa de nailon de refuerzo de lado a lado mejora la estabilidad al conducir a velocidades elevadas y refuerzos en el alambre de aro o talón fortalecen el flanco para mejorar la maniobrabilidad.
Neumáticos expuestos a temperaturas de 20 grados Fahrenheit (-7 grados Celsius) o más bajas, deben retornar gradualmente, a temperaturas de por lo menos 40 grados Fahrenheit (5 grados Celsius), por lo menos 24 horas antes de que sean doblados o flexionados en cualquier manera, como, por ejemplo, ajustando la presión de inflado, montar en rines, soportar el peso del vehículo o rodarlos al conducir.
Flexionar o doblar el caucho especializado, utilizado en los neumáticos de Rendimiento Extremo Para Verano, en condiciones frías, puede resultar en grietas irreversibles al compuesto de caucho. Si esto sucede, la garantía del producto se anula debido al uso o almacenamiento incorrecto. Neumáticos con grietas en el caucho deben ser reemplazados.
Specifications shown are as accurate as possible based on the information provided to us by the tire manufacturers. The dimensions reflect average values for tires measured on the specified measuring rim width. Individual tires may vary from data shown.
All tires are subject to continuous development. The tire manufacturers and Tire Rack reserve the right to change product specifications at any time without notice or obligation.
*Although regularly updated, the country of origin for tires may vary from what is shown. Unfortunately, we cannot accommodate requests for tires with a specific country of origin.
For assistance selecting products for your vehicle, please contact our sales specialists at 888-541-1777 or via email.
Warranty summary for replacement tires purchased on or after 01/01/25(1 of 3)
Workmanship & Materials Warranty:5 Years from purchase or 6 Years fr / Free replacement for 6 Years from date of purchase or worn to 2/32" remaining depth
Workmanship & Materials Warranty:5 Years from purchase or 6 Years fr / Free replacement for 6 Years from date of purchase or worn to 2/32" remaining depth
See official manufacturer's warranty brochure for specific details.
New vehicle Original Equipment tire warranties often differ from those covering replacement tires. Consult your vehicle documents to confirm Original Equipment tire warranty coverage.
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.
Customers praise the Cooper Discoverer S/T Maxx for outstanding dry traction (9-10 ratings) and reliable wet performance, with strong hydroplaning resistance (8-10 scores) suited to rugged all-terrain use. Winter traction earns consistent praise in deep snow (8-10), though ice performance shows occasional 7s. Treadwear scores (8-10) highlight durability for heavy-duty use. Comfort receives mostly positive feedback (7-10) for ride quality, but noise levels split opinions-some report noticeable road hum (1-6 scores), while others find it acceptable. Overall, drivers rate it highly for off-road capability and on-road stability, aligning well with its commercial all-terrain design.
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Customers Like:
67 reviews mention "Wet Traction"
57 positive
10 negative
Wet traction earns mostly 8-10s, with customers praising reliable grip and stability on wet terrain. Hydroplaning resistance also scores strong 8-10s, though some note challenges in extreme downpours.
October 03, 2023
(Verified Purchase)
4.4 out of 5
...I live in a dry climate, but when it does rain they handle the wet road well, never hydro plain, but they might spin with too much throttle at acceleration...
It’s an old school skinny 33” tire that gives a truck a little more offroad security without a lift. They’ve been great in every season. In snow you have to remember to air down because fully inflated they seem to want to spin in fresh snow. The “pizza cutter” size allows the tire to dig down in deep snow for traction, they do not float my 7.3 powerstroke cclb truck. I live in a dry climate, but when it does rain they handle the wet road well, never hydro plain, but they might spin with too much throttle at acceleration. They handle Rocky Mountain roads with ease, I’m not concerned with a puncture due to carcass construction. They haven’t seen a ton of mud, but they handled it well. The cooper st maxx clears mud and debris well. I have a gravel driveway and once on the highway rocks are flung out into the fender well regularly. We regularly haul a truck camper in the bed and these tire are always up for the task. They are firm on the road and corner well with great sidewalk stability. I’d run them again for my full size diesel without hesitation.
Vehicle: 1999 Ford F350 4wd Miles Driven on Tires: 12,000 Driving Conditions: Combined Off Road/Highway Location: DUFUR, OR Driving Style: Spirited
Most customers rate winter traction highly, with snow and deep snow scores often 8-10. Ice traction sees mostly 7-8, suitable for rugged all-terrain use. A few note lower ice grip but praise overall capability.
October 12, 2022
(Verified Purchase)
4.9 out of 5
...This tire is the absolute best tire for winter and mountain driving while maintaining fairly quiet ride on highway (all things considered for big tread pattern tire)... !...
Get them syped! This tire is the absolute best tire for winter and mountain driving while maintaining fairly quiet ride on highway (all things considered for big tread pattern tire). they don’t wear out as uneventful as, say, Wrangler Duratrac which I’ve had for years until I shifted to these. if you get them syped the traction on show and ice is freaking remarkable!!! best winter/mud/dirt road I’ve ever had. This tire will never leave you hanging and will get you in and out of the mountains with confidence.
Vehicle: 2006 Toyota Tundra Access Cab SR5 4wd Miles Driven on Tires: 10,000 Driving Conditions: Combined Off Road/Highway Location: BOZEMAN, MT Driving Style: Spirited
Vehicle: 2014 Chevrolet Silverado 2500 HD 4wd Regular Cab Miles Driven on Tires: 8,000 Driving Conditions: Combined Off Road/Highway Location: BOLTON LANDING, NY Driving Style: Average
...Had deep snowfall in 2018 over 10 inches on road, pulled right through...
I've had no problem with these tires. Little noisy but I like noise. Responsive on interstate highways as well as off road. Not much wear on them after 20,000 miles. Had deep snowfall in 2018 over 10 inches on road, pulled right through. I recommend!
Vehicle: 2010 Ford F150 XL 4x4 Super Cab Miles Driven on Tires: 20,000 Driving Conditions: Mostly Highway Location: INWOOD, WV Driving Style: Spirited
Customers rate dry traction highly with most scores 9-10, praising confident grip and stability on rugged terrain. While a few note 7-8 ratings, performance excels in all-terrain conditions as intended.
66 reviews mention "Ride Quality"
54 positive
12 negative
Most customers rate ride quality and noise comfort highly, with scores between 7-10. Positive feedback highlights smooth handling and durability in rugged conditions, impressive for a commercial all-terrain tire. Some variability noted, but overall satisfaction is strong.
December 09, 2022
(Verified Purchase)
4.5 out of 5
...Cooper ST Maxx are very comfortable and surprisingly quiet.
TireRack order shipped fast and arrived fast. Cooper ST Maxx are a great all purpose tire, balanced well, good traction across all types of surfaces except not deep wet snow or deep clay mud. Cooper ST Maxx are very comfortable and surprisingly quiet.
Vehicle: 2019 Chevrolet Silverado 1500 4WD Crew Cab Miles Driven on Tires: 15,000 Driving Conditions: Combined Off Road/Highway Location: OHIO, NY Driving Style: Average
...I drive a lot of miles a week on open hwy and in the city and weather I am doing 85 or 25 the ride quality is about the same...
These are great compared to other tires in this class, rotate them, keep the correct pressure and you will see excellent results from these tires. I drive a lot of miles a week on open hwy and in the city and weather I am doing 85 or 25 the ride quality is about the same. These are not Michelins and if that is the ride you want then you should buy those, but if you want a great on/off road tire I can definitely recommend this tire. Have a great and safe driving.
Vehicle: 2007 Chevrolet Silverado 2500 HD 4wd Regular Cab Miles Driven on Tires: 30,000 Driving Conditions: Combined Highway/City Location: DUNNVILLE, KY Driving Style: Average
Treadwear scores are predominantly 8-10, with customers praising durability in rugged all-terrain conditions. A few lower ratings exist, but most highlight exceptional longevity ideal for commercial use.
November 20, 2019
4.8 out of 5
...This set currently has 61,000 miles on them (getting rotated and balanced at a local Discount Tire) and still have 7/32 of treadlife left. The store manager looked up my total miles to date for me and did two double takes on the miles. Couldn't believe the miles I have on them...
These are absolutely the best all around all terrain tire I have ever run, and I have run many different tires on my Jeeps and Land Cruiser over the last 35 years. This set currently has 61,000 miles on them (getting rotated and balanced at a local Discount Tire) and still have 7/32 of treadlife left. The store manager looked up my total miles to date for me and did two double takes on the miles. Couldn't believe the miles I have on them. Always have them balanced and rotated every 3 to 5 thousand miles at Discount Tire (lifetime for free!!) The tires are heavy, lost a couple miles to the fallen when changing to them but also had moved to a size larger than stock so not all MPG loss due to weight. Will absolutely run these tires again and, as of now, have no plans to run any other tire on my Jeeps.
Vehicle: 2008 Jeep Grand Cherokee Laredo Miles Driven on Tires: 61,000 Driving Conditions: Combined Highway/City Location: FAYETTEVILLE, GA Driving Style: Average
...I got 70k+ out of the tires on my Ford before I sold the truck with PLENTY of tread left, was able to get well over 100k on my first set for the Ram (only reason I swapped them was to up size a little) and they had plenty of tread left. Currently I am at about 40k miles on this set and they look and feel like new!
This is my 3rd set of Cooper ST Maxx tires. I had a set on my Offroad Ford Expedition, and this is my second set on my Ram 1500. I tow and haul alot, off road regularly (light trails and off trail. no mudding or rock climbing) and these tires have never disappointed. I got 70k+ out of the tires on my Ford before I sold the truck with PLENTY of tread left, was able to get well over 100k on my first set for the Ram (only reason I swapped them was to up size a little) and they had plenty of tread left. Currently I am at about 40k miles on this set and they look and feel like new! Whether it be towing, hauling or just daily driving to and from work and no matter the weather these tires ALWAYS deliver! I will NEVER EVER put another tire on any truck or SUV I own so long as they make these. They are worth EVERY PENNY.
Vehicle: 2016 RAM 1500 4WD Crew Cab Miles Driven on Tires: 40,000 Driving Conditions: Combined Off Road/Highway Location: MOUNT AIRY, MD Driving Style: Spirited
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.
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.
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