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Home  >  275 / 45 21  >  Dunlop  >  Dunlop 275 / 45 21
Identify the size of your tyre
The exact dimensions of a tyre can be found on the sidewall printed mark. The graphic shows how to read properties and dimensions of the tyre:
 
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SPEED INDEX:
The speed index indicates the maximum speed intended for the tyre. Up to this value, the manufacturer guarantees optimum operation with the appropriate tyre pressure. The maximum speed allowed for this vehicle is given in the vehicle owner's manual; this information can be used to select the appropriate speed index for the tyre. The speed index is the last mark on the sidewall of the tyre.
 
Load Index
Permissible maximum axle load per tyre in kg. To be found in the registration certificate or vehicle registration document or read directly from the tyre (two-digit number). It is permitted to fit a tyre with a higher load index.
 
Driving safety despite puncture
Runflat tyres are puncture-resistant tyres with reinforced sidewalls. This creates the so-called run-flat property. In the event of damage, this allows the vehicle to continue driving up to a distance of approx. 100 km (and even beyond depending on the product) at a maximum speed of 80 km/h, even if the pressure has been completely lost. Run-flat tyres even prevent the tyre rubber from jumping off the rim in the event of a loss of air pressure. A flat tyre is therefore still a flat tyre, but it loses some of its drama. Note: All run-flat tyres are marked with the symbol "RSC" (Runflat System Component) and may only be fitted in vehicles with a functioning air pressure control system!
 
Tyres with increased load capacity
Reinforced tyres are designed for higher loads than normal tyres. They can be identified by the designation 'RF' (reinforced) or also 'XL' or 'Extra Load'. They are used on vans, minibuses, off-road vehicles, etc. However, their mounting alone does not automatically result in higher load capacity but also requires a correspondingly higher air pressure. Furthermore, the load capacity index specified in the vehicle documents continues to apply.
 
Tyres with extra high load capacity
The "C" in the term C tyres stands for "commercial". These tyres are specially designed for commercial vehicles. These can be, for example, lighter trucks, delivery vans, flatbed trucks or panel vans. In other words: vehicles that have to move higher loads at a comparatively lower speed. The multi-ply reinforced C tyres are therefore even more load-bearing than reinforced tyres.
 
Mobility-optimised tyres
A tyre with a sealing layer on the opposite side of the tyre tread. In the event of a puncture (e.g. by a nail), this layer blocks any loss of air, even if the foreign body causing the puncture is still in the tyre. It is not necessary to stop or change the tyres immediately at the roadside.
 
Mobility-optimised tyres
A tyre with a sealing layer on the opposite side of the tyre tread. In the event of a puncture (e.g. by a nail), this layer blocks any loss of air, even if the foreign body causing the puncture is still in the tyre. It is not necessary to stop or change the tyres immediately at the roadside.
 
Tyres optimised for electric vehicles.
Tyre developed for electric vehicles. These tyres can also be used without hesitation on vehicles with other drive systems.
 

Our offer for  Dunlop   275/45  21     

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Prices include VAT and delivery within Ireland

Dunlop Sport Maxx RT2
Dunlop
Dunlop
Sport Maxx RT2
275/45 R21 110Y XL, SUV BLK

Tyre type

 Summer tyres
limited stock
EU Tyre Label
EU Tyre Label
Roll resistance CWet grip ANoise emissions 71dB
Client reviews rating:
Client reviews rating

More than 5 billion kilometers. Tyretest.com offers over 430 000 tests firsthand - from consumers for consumers.

(12)
Average based on 12 test results  N/A
Grip in dry conditions
Braking in dry conditions
Grip in wet conditions
Braking in wet conditions
Grip in snow
Driving comfort
Internal noise level
Tyre wear
Fuel consumption
Kilometers driven4403095
07.08.2020frombrendan O sullivan
Good tyres but not as good as the Michelin pilot sport 4. Will be going back to the sports.
04.12.2019fromAli
I am a High mileage driver covering all roads day and night. This is a premium summer tyre made for dry grip and wet braking. Out of a budget , midrange and premium I’ve noted , the cheapest gives me around 6000 miles. The mid ranges cover around 12000 miles and premiums last around 18000 miles. In terms of grip it always has to be premium. These are also much quieter than budget tyres. I’ve covered 25000 miles of hard driving with these tyres and they still have around 3mm left. This is the second summer I’ve purchased these tyres. Good on price as well as grip
(12)

Reifentest.com

just  212.31 £
limited stock
Details
Dunlop Winter Sport 5
Dunlop
Dunlop
Winter Sport 5
275/45 R21 110V XL, SUV BLK

Tyre type

 Winter tyres
available
EU Tyre Label
EU Tyre Label
Roll resistance CWet grip BNoise emissions 73dB
Client reviews rating:
Client reviews rating

More than 5 billion kilometers. Tyretest.com offers over 430 000 tests firsthand - from consumers for consumers.

(11)
Average based on 11 test results  N/A
Grip in dry conditions
Braking in dry conditions
Grip in wet conditions
Braking in wet conditions
Grip in snow
Driving comfort
Internal noise level
Tyre wear
Fuel consumption
Kilometers driven6595134
23.03.2026fromCharles Heard
A sure grip in all weather / road conditions
30.04.2021fromPaul
Just avoid, unless you live in Finland or something. Driving in WET and Dry, just terrible grip and I have a 4x4 Subaru with LSD. It's shocking really. Unless you drive really slow, it's OK then, but come roundabout they just don't grip doesn't matter wet or dry. Good in snow, but it should be at least good in wet as well and OK in dry, but It's crap in both wet and dry, so not good for me, will not buy again.
05.06.2019fromAsh
I didn't get these on until Feb/Mar when worst of the weather had passed. Driven on main roads & motorways at temps between 3°c and 16°c in mixed weather without problems. Obviously they were less responsive at the higher temps but never felt dangerous. No sign of wear at all. Dry road grip when accelerating lost traction a bit too easily but cornering was predictable.
(11)

Reifentest.com

just  266.94 £
available
Details
Show all the tyres in the selected size
Road Rider Strada SUV
Road Rider
Strada SUV
275/45 R21 110Y XL

Tyre type

 Summer tyres
limited stock
EU Tyre Label
EU Tyre Label
Roll resistance CWet grip BNoise emissions 71dB
just  96.72 £
limited stock
Details
Accelera Iota ST-68
Accelera
Accelera
Iota ST-68
275/45 R21 101V XL

Tyre type

 Summer tyres
limited stock
EU Tyre Label
EU Tyre Label
Roll resistance CWet grip CNoise emissions 68dB
just  98.51 £
limited stock
Details
APlus A610
APlus
A610
275/45 R21 110Y XL

Tyre type

 Summer tyres
available
EU Tyre Label
EU Tyre Label
Roll resistance CWet grip BNoise emissions 72dB
just  100.21 £
available
Details
Rockblade Rock 525
Rockblade
Rock 525
275/45 R21 110W XL

Tyre type

 Summer tyres
limited stock
EU Tyre Label
EU Tyre Label
Roll resistance CWet grip BNoise emissions 72dB
just  104.06 £
limited stock
Details
AUSTONE Athena SP-303
AUSTONE
Athena SP-303
275/45 R21 110Y XL

Tyre type

 Summer tyres
available
EU Tyre Label
EU Tyre Label
Roll resistance CWet grip CNoise emissions 73dB
just  104.22 £
available
Details
Triangle EffeXSport TH202
Triangle
Triangle
EffeXSport TH202
275/45 R21 110Y XL

Tyre type

 Summer tyres
available
EU Tyre Label
EU Tyre Label
Roll resistance CWet grip ANoise emissions 73dB
Client reviews rating:
Client reviews rating

More than 5 billion kilometers. Tyretest.com offers over 430 000 tests firsthand - from consumers for consumers.

(1)
Average based on 1 test results  N/A
Grip in dry conditions
Braking in dry conditions
Grip in wet conditions
Braking in wet conditions
Grip in snow  N/A
Driving comfort
Internal noise level
Tyre wear
Fuel consumption
Kilometers driven241812
26.02.2025fromPhillip Claridge
The car was supplied to me with brand new Triangle tyres - a brand I had not heard of and was not one I would have gone for but in the year that I have had them on the car, I have no complaint about their performance. I cannot say whether they would be the tyre of choice when replacement is necessary. t
(1)

Reifentest.com

just  106.06 £
available
Details
Kustone Passion P9S
Kustone
Passion P9S
275/45 R21 110W XL

Tyre type

 Summer tyres
available
EU Tyre Label
EU Tyre Label
Roll resistance BWet grip BNoise emissions 73dB
just  108.52 £
available
Details
Superia EcoBlue EV
Superia
EcoBlue EV
275/45 R21 110W XL

Tyre type

 Summer tyres
available
EU Tyre Label
EU Tyre Label
Roll resistance CWet grip BNoise emissions 71dB
just  109.47 £
available
Details
Leao Nova Force C/S
Leao
Leao
Nova Force C/S
275/45 R21 110W XL

Tyre type

 Summer tyres
available
just  112.10 £
available
Details
Tracmax X-Privilo S330
Tracmax
X-Privilo S330
275/45 R21 110V XL

Tyre type

 Winter tyres
available
EU Tyre Label
EU Tyre Label
Roll resistance CWet grip CNoise emissions 73dB
just  112.25 £
available
Details
Crosswind Sport Peak C/S
Crosswind
Sport Peak C/S
275/45 R21 110W XL

Tyre type

 Summer tyres
available
EU Tyre Label
EU Tyre Label
Roll resistance CWet grip ANoise emissions 73dB
just  113.28 £
available
Details
Triangle AdvanteX SUV TR259
Triangle
Triangle
AdvanteX SUV TR259
275/45 R21 110Y XL, SUV

Tyre type

 Summer tyres
available
EU Tyre Label
EU Tyre Label
Roll resistance CWet grip CNoise emissions 73dB
just  113.73 £
available
Details
Sailun Atrezzo ZSR2 SUV
Sailun
Sailun
Atrezzo ZSR2 SUV
275/45 R21 110Y XL

Tyre type

 Summer tyres
available
EU Tyre Label
EU Tyre Label
Roll resistance BWet grip ANoise emissions 72dB
just  114.12 £
available
Details
Minerva Ecospeed 2 SUV
Minerva
Minerva
Ecospeed 2 SUV
275/45 R21 110Y XL

Tyre type

 Summer tyres
limited stock
EU Tyre Label
EU Tyre Label
Roll resistance CWet grip CNoise emissions 72dB
just  114.17 £
limited stock
Details
Tracmax X Privilo RS01
Tracmax
X Privilo RS01
275/45 R21 110Y XL

Tyre type

 Summer tyres
available
just  120.80 £
available
Details
RoadX SU01
RoadX
SU01
275/45 R21 110Y XL

Tyre type

 Summer tyres
available
EU Tyre Label
EU Tyre Label
Roll resistance CWet grip BNoise emissions 71dB
just  121.55 £
available
Details
Tristar Snowpower UHP
Tristar
Tristar
Snowpower UHP
275/45 R21 101V XL

Tyre type

 Winter tyres
available
EU Tyre Label
EU Tyre Label
Roll resistance CWet grip CNoise emissions 73dB
Client reviews rating:
Client reviews rating

More than 5 billion kilometers. Tyretest.com offers over 430 000 tests firsthand - from consumers for consumers.

(4)
Average based on 4 test results  N/A
Grip in dry conditions
Braking in dry conditions
Grip in wet conditions
Braking in wet conditions
Grip in snow
Driving comfort
Internal noise level
Tyre wear
Fuel consumption
Kilometers driven1167530
(4)

Reifentest.com

just  123.26 £
available
Details
Gripmax SureGrip Pro Sport
Gripmax
SureGrip Pro Sport
275/45 R21 110Y XL

Tyre type

 Summer tyres
available
EU Tyre Label
EU Tyre Label
Roll resistance CWet grip ANoise emissions 73dB
just  123.90 £
available
Details
Landsail RapidDragon SUV
Landsail
Landsail
RapidDragon SUV
275/45 R21 110Y XL

Tyre type

 Summer tyres
available
EU Tyre Label
EU Tyre Label
Roll resistance BWet grip BNoise emissions 72dB
just  124.03 £
available
Details
Arivo Winmaster ARW 5
Arivo
Winmaster ARW 5
275/45 R21 110H XL

Tyre type

 Winter tyres
limited stock
EU Tyre Label
EU Tyre Label
Roll resistance CWet grip DNoise emissions 71dB
just  124.24 £
limited stock
Details
RoadX RXQuest Sport SUV
RoadX
RXQuest Sport SUV
275/45 R21 110W XL

Tyre type

 Summer tyres
available
EU Tyre Label
EU Tyre Label
Roll resistance BWet grip ANoise emissions 71dB
just  125.21 £
available
Details
Cooper Zeon 4XS Sport
Cooper
Cooper
Zeon 4XS Sport
275/45 R21 110Y XL

Tyre type

 Summer tyres
available
EU Tyre Label
EU Tyre Label
Roll resistance CWet grip ANoise emissions 71dB
Client reviews rating:
Client reviews rating

More than 5 billion kilometers. Tyretest.com offers over 430 000 tests firsthand - from consumers for consumers.

(2)
Average based on 2 test results  N/A
Grip in dry conditions
Braking in dry conditions
Grip in wet conditions
Braking in wet conditions
Grip in snow
Driving comfort
Internal noise level
Tyre wear
Fuel consumption
Kilometers driven761778
15.06.2024fromA. Blackburn
This is the second set of the same tyres I have put on my XC90 - mileage driven reflects use of both sets. They are sure-footed and comfortable, and inspire confidence. No hesitation in buying more of the same.
(2)

Reifentest.com

just  127.88 £
available
Details
Imperial Ecosport SUV
Imperial
Imperial
Ecosport SUV
275/45 R21 110Y XL

Tyre type

 Summer tyres
limited stock
EU Tyre Label
EU Tyre Label
Roll resistance CWet grip CNoise emissions 72dB
just  130.76 £
limited stock
Details
Linglong Grip Master C/S
Linglong
Linglong
Grip Master C/S
275/45 R21 110W XL

Tyre type

 Summer tyres
available
EU Tyre Label
EU Tyre Label
Roll resistance CWet grip ANoise emissions 73dB
just  132.80 £
available
Details
Minerva Frostrack UHP
Minerva
Minerva
Frostrack UHP
275/45 R21 110V XL

Tyre type

 Winter tyres
limited stock
EU Tyre Label
EU Tyre Label
Roll resistance CWet grip CNoise emissions 73dB
Client reviews rating:
Client reviews rating

More than 5 billion kilometers. Tyretest.com offers over 430 000 tests firsthand - from consumers for consumers.

(1)
Average based on 1 test results  N/A
Grip in dry conditions
Braking in dry conditions
Grip in wet conditions
Braking in wet conditions
Grip in snow
Driving comfort
Internal noise level
Tyre wear
Fuel consumption
Kilometers driven33000
(1)

Reifentest.com

just  133.51 £
limited stock
Details
Grenlander Enri U08
Grenlander
Enri U08
275/45 R21 110W XL

Tyre type

 Summer tyres
limited stock
EU Tyre Label
EU Tyre Label
Roll resistance CWet grip BNoise emissions 72dB
just  135.18 £
limited stock
Details
There are 28 of 125 tyres displayed
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Prices include VAT and delivery within mainland UK (excl. Scottish Highlands).

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