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 Sumitomo HTR Z5 for outstanding dry traction, with many ratings hitting 9-10, delivering confident grip and responsive handling in summer conditions. Wet traction also earns strong marks, with hydroplaning resistance scoring 8-10, ensuring reliable performance in rain. Ride comfort receives consistent praise for smoothness, complemented by low noise levels that enhance driving enjoyment. While treadwear scores show mostly 7-9, some note faster wear than expected-a common trade-off for high-performance summer tires. Overall, drivers highlight its balanced blend of precision, wet/dry capability, and comfort, making it a compelling choice for enthusiasts seeking summer-focused performance.
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Customers Like:
75 customers mention "Wet Traction"
66 positive
9 negative
Most customers rate wet traction highly with scores of 8-10, highlighting confident grip and hydroplaning resistance. While a few lower scores note concerns, the HTR Z5 excels in wet conditions as intended for summer performance.
April 01, 2025(Verified Purchase)
4.8 out of 5
...The 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
...From what I can tell these are better for wet traction and have more grooves for moving water out of the way compared to the HTR Z3s.
These seem to be slightly a step down from the HTR Z3s in terms of dry traction. They need to be broken in to get the oil and wax off the surface. Mine were very squirrelly for the first 500 miles or so. They settled down after that. From what I can tell these are better for wet traction and have more grooves for moving water out of the way compared to the HTR Z3s.
Vehicle: 2001 Porsche 911 Carrera Turbo Miles Driven on Tires: 1,000 Driving Conditions: Mostly Highway Location: AVON, OH Driving Style: Spirited
...Nice grip on take off, decent wet traction, does not hydroplane at reasonable speeds...
Pretty good tire for occasional spirited driving. Holds an apex very well, and won't surprise you mid turn. Nice grip on take off, decent wet traction, does not hydroplane at reasonable speeds. Looks fantastic. Rim saver lip adds to styling.
Customers overwhelmingly rate the Sumitomo HTR Z5's dry traction 9-10, praising its excellent grip and responsive handling. A few 7s suggest minor variability, but as a summer tire, it delivers outstanding dry performance with confident cornering and stability.
June 11, 2021(Verified Purchase)
4.5 out of 5
...Handling is very good on dry roads with normal wet performance. With the rears worn down do do start to notice some loss of traction in the wet and when accelerating through curves on the dry...
Purchased these tires for my '03 Base Boxster. I do not track this car so this review is for normal to fun road driving. Overall very good tires. Just ordered a new rear set to replace the originals with over 11k miles on them which are at the wear bars. Front tires still have plenty of tread left. Handling is very good on dry roads with normal wet performance. With the rears worn down do do start to notice some loss of traction in the wet and when accelerating through curves on the dry. Probably not the same performance as Michelin or Pirelli but for normal road driving and some fun in the twistys they work great.
Vehicle: 2003 Porsche Boxster Miles Driven on Tires: 11,618 Driving Conditions: All Highway Location: SOBIESKI, WI Driving Style: Spirited
...I find the cornering traction to be above par, but the rear tires will break traction in a straight line at speed. Which I prefer because a harder tire is just a little more fun to drive. My car is rated at 455 hp and the tires let me put down good take off speed and braking...
The honesty part of my purchase was purely economics. Not the least expensive, but close. I am a member of a car club and, well, we buy sports cars for a reason so, yeah I drive my car as such. I find the cornering traction to be above par, but the rear tires will break traction in a straight line at speed. Which I prefer because a harder tire is just a little more fun to drive. My car is rated at 455 hp and the tires let me put down good take off speed and braking. If I had more motor I would definitely look into an upgrade, but the tires seem to handle my level of “spirited” driving sufficiently. I will probably buy them again since I get about 24,000 miles out of a decent set of tires. I hope this helps.
Vehicle: 2016 Chevrolet Camaro SS COUPE Miles Driven on Tires: 1,200 Driving Conditions: Combined Highway/City Location: EDMOND, OK Driving Style: Spirited
...They offer excellent performance and a great ride in 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
Customers praise the Sumitomo HTR Z5's comfort, with most scoring 9s and 10s for ride quality and noise levels. High ratings highlight its smooth, refined feel, aligning well with Ultra High Performance Summer tires' focus on balanced dry and wet traction.
August 19, 2020(Verified Purchase)
3.6 out of 5
...They changed the sidewalls or something because the Z5 are too soft. Cornering feels lacking in response.
I had the HTZ III before these and I liked them better. They changed the sidewalls or something because the Z5 are too soft. Cornering feels lacking in response.
Vehicle: 2003 Lexus IS300 Miles Driven on Tires: 5,000 Driving Conditions: Combined Highway/City Location: SAN JOSE, CA Driving Style: Spirited
After 3 years/30k miles of mild driving, these poor tires are completely shot. I originally got them as the cheaper option on a wheel and tire package for my 2015 Mustang GT from American Muscle. Also running a premium fuel performance tune and CAI, but that shouldn't affect things too much. I had about 30k miles on the car when I got these tires (picked up a nail in the originals), so I had already stopped accelerating like an idiot, etc. I drove in a pretty sedate fashion with a lot of highway miles and local trips on county roads. I run a square setup and rotate every 5K miles. I live in Georgia, so it was generally pretty hot.
These tires are cheap, not just inexpensive. They didn't balance well. I've got more weights on the wheels (RTR Tech 5) than I like. Treadwear is ok for performance tires, but the performance absolutely didn't live up to the rating. Acceleration was terrible even under partial throttle because they'd break loose. Trying to accelerate onto a road from a side road was an adventure. They'd want to hydroplane even on humid days, and wet roads ... I don't even want to get into it. It's bad. Obviously, they're garbage in the cold since they're a summer tire.
On the bright side, they're not noisy. The ride is comfortable. They cost less than better tires. They look decent.
I think they'd be a decent summer option on a light car like an MR2 (I ran Sumitomos on mine and like them) or Civic. Something without a ton of power. They'll be totally overwhelmed by anything with horsepower. I won't ever buy these for my Mustang again.
Vehicle: 2015 Ford Mustang Fastback GT Miles Driven on Tires: 30,000 Driving Conditions: Combined Highway/City Location: HARLEM, GA Driving Style: Average
Treadwear scores are predominantly 7-10, with many 9s and 10s. Customers highlight excellent tread life in summer conditions, aligning with its Ultra High Performance Summer design.
July 24, 2024(Verified Purchase)
4.1 out of 5
...Tread wear appears to be minimal after a year and 5,000 mi
Overall a great tire. I also bought these in 255 for my rears. Have good traction, even in the South FL monsoons that we occasionally get. Tread wear appears to be minimal after a year and 5,000 mi
Vehicle: 2013 BMW 335i Sedan BMW Performance Brake Option Miles Driven on Tires: 5,000 Driving Conditions: Mostly City Location: POMPANO BEACH, FL Driving Style: Spirited
...For the TW rating, the wear was within expectations...
Ran this tire for increased performance during the summer. Performed decently well at autocross events over the summer, needed a lot of air pressure due to softer sidewall. Good tire for daily driving too. Drove on this from KS to FL and back without issue. Had decent wet traction and response. Overall, for the price, this is a decent tire. For the TW rating, the wear was within expectations. However, I'd probably purchase a similar Yokohama or other brands offering in the future.
Vehicle: 2018 Honda Civic Hatchback EX Miles Driven on Tires: 10,000 Driving Conditions: Combined Highway/City Location: OVERLAND PARK, KS 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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