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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:
 
/
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.
 

x
Original equipment quality: optimum adjustment to the vehicle
Tyres with a special OEM marking on the sidewall, e.g. "MO" for Mercedes-Benz, were developed in cooperation with a specific car manufacturer and the tyre industry. These tyres have been homologated by the vehicle manufacturer and are a perfect match for a specific model. They have been specially designed to highlight or further improve the performance characteristics of the car in question, thus representing the culmination of a state-of-the-art fine-tuning process that perfectly complements the latest technological developments in the automotive industry. Tyres with manufacturer's markings can of course also be used on other vehicles.
 

Our offer for  Hankook  255/40  21   

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Prices include VAT and delivery within Ireland

New
Hankook Winter i*cept evo 4 SUV W340A
Hankook
Hankook
Winter i*cept evo 4 SUV W340A
255/40 R21 102V XL 4PR, with rim protection (MFS) SBL

Season

 Winter tyres
2 - 4 working days delivery time
limited stock
Tyre label
Tyre label
Roll resistance B Wet grip B Noise emissions 73 dB
List price*  353.50 £
just  212.91 £
limited stock
Details
Free shipping **
Hankook iON evo (IK01A)
Hankook
Hankook
iON evo (IK01A)
255/40 R21 102T XL 4PR (+), EV, SUV, with rim protection (MFS) SBL

Season

 Summer tyres
2 - 5 working days delivery time
In Stock
Tyre label
Tyre label
Roll resistance A Wet grip A Noise emissions 68 dB
List price*  407.00 £
just  226.90 £
In Stock
Details
Free shipping **
Hankook Ventus evo K137A
Hankook
Hankook
Ventus evo K137A
255/40 ZR21 102Y XL 4PR SUV, with rim protection (MFS) SBL

Season

 Summer tyres
2 - 5 working days delivery time
limited stock
Tyre label
Tyre label
Roll resistance B Wet grip A Noise emissions 71 dB
List price*  356.00 £
just  231.23 £
limited stock
Details
Free shipping **
Hankook Kinergy 4S² X H750A
Hankook
Hankook
Kinergy 4S² X H750A
255/40 R21 102Y XL 4PR, with rim protection (MFS) SBL

Season

 All-season tyres
2 - 5 working days delivery time
In Stock
Tyre label
Tyre label
Roll resistance C Wet grip B Noise emissions 73 dB
List price*  367.00 £
just  243.18 £
In Stock
Details
Free shipping **
Hankook Ventus S1 Evo 3 K127A
Hankook
Hankook
Ventus S1 Evo 3 K127A
255/40 ZR21 102Y XL 4PR SUV, with rim protection (MFS) SBL

Season

 Summer tyres
2 - 5 working days delivery time
limited stock
Tyre label
Tyre label
Roll resistance C Wet grip A Noise emissions 73 dB
Client reviews rating:
Client reviews rating

More than 5 billion kilometers. <span><em>Tyretest.com</em></span> 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 driven 173026
03.09.2025 from Russ
The Tyres give good grip and little noise. They grip Well in the dry and seem ok in wet
(1)

Reifentest.com

List price*  345.50 £
just  252.18 £
limited stock
Details
Free shipping **
Hankook iON i*cept (IW01A)
Hankook
Hankook
iON i*cept (IW01A)
255/40 R21 102V XL 4PR EV, SUV, SoundAbsorber, with rim protection (MFS) SBL

Season

 Winter tyres
2 - 5 working days delivery time
In Stock
Tyre label
Tyre label
Roll resistance D Wet grip B Noise emissions 70 dB
List price*  431.50 £
just  253.95 £
In Stock
Details
Free shipping **
Hankook iON evo (IK01A)
Hankook
Hankook
iON evo (IK01A)
255/40 ZR21 (102Y) XL 4PR EV, SUV, SoundAbsorber, with rim protection (MFS) SBL

Season

 Summer tyres
2 - 4 working days delivery time
limited stock
Tyre label
Tyre label
Roll resistance A Wet grip A Noise emissions 68 dB
List price*  429.50 £
just  256.34 £
limited stock
Details
Free shipping **
Hankook iON evo (IK01A)
Hankook
Hankook
iON evo (IK01A)
255/40 R21 102Y XL 4PR *, EV, SUV, with rim protection (MFS) SBL

Season

 Summer tyres
2 - 5 working days delivery time
limited stock
Tyre label
Tyre label
Roll resistance A Wet grip B Noise emissions 70 dB
List price*  412.50 £
just  265.86 £
limited stock
Details
Free shipping **
Hankook Ventus S1 Evo 3 EV K127E
Hankook
Hankook
Ventus S1 Evo 3 EV K127E
255/40 R21 102T XL 4PR (+), AO, EV, Sealguard, with rim protection (MFS) SBL

Season

 Summer tyres
2 - 5 working days delivery time
In Stock
Tyre label
Tyre label
Roll resistance C Wet grip A Noise emissions 71 dB
Client reviews rating:
Client reviews rating

More than 5 billion kilometers. <span><em>Tyretest.com</em></span> 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 driven 155208
29.01.2022 from Stefan Ralinov
Felt the car very stable and quiet straight away when i put the tires.Only cons i think is the durability on dry road. Great tires on other hand. Worth the money. Would recomend!
(1)

Reifentest.com

List price*  349.00 £
just  271.47 £
In Stock
Details
Free shipping **
Hankook iON i*cept (IW01A)
Hankook
Hankook
iON i*cept (IW01A)
255/40 R21 102V XL EV, SUV, SoundAbsorber

Season

 Winter tyres
2 - 5 working days delivery time
In Stock
Tyre label
Tyre label
Roll resistance D Wet grip B Noise emissions 70 dB
List price*  431.50 £
just  282.82 £
In Stock
Details
Free shipping **
Hankook iON i*cept (IW01A)
Hankook
Hankook
iON i*cept (IW01A)
255/40 R21 102H XL 4PR *, EV, SUV, with rim protection (MFS) SBL

Season

 Winter tyres
2 - 5 working days delivery time
In Stock
Tyre label
Tyre label
Roll resistance C Wet grip B Noise emissions 71 dB
List price*  411.50 £
just  285.98 £
In Stock
Details
Free shipping **
Hankook iON evo (IK01A)
Hankook
Hankook
iON evo (IK01A)
255/40 R21 102T XL 4PR (+), EV, SUV, Sealguard, with rim protection (MFS) SBL

Season

 Summer tyres
2 - 5 working days delivery time
limited stock
Tyre label
Tyre label
Roll resistance A Wet grip A Noise emissions 68 dB
List price*  440.50 £
just  286.17 £
limited stock
Details
Free shipping **
Hankook Winter i*cept evo3 X W330A
Hankook
Hankook
Winter i*cept evo3 X W330A
255/40 R21 102V XL 4PR, with rim protection (MFS) SBL

Season

 Winter tyres
2 - 5 working days delivery time
limited stock
Tyre label
Tyre label
Roll resistance C Wet grip B Noise emissions 73 dB
List price*  353.50 £
just  287.95 £
limited stock
Details
Free shipping **
Hankook iON i*cept (IW01A)
Hankook
Hankook
iON i*cept (IW01A)
255/40 R21 102V XL EV, SUV, SoundAbsorber, with rim protection (MFS)

Season

 Winter tyres
2 - 5 working days delivery time
In Stock
Tyre label
Tyre label
Roll resistance D Wet grip B Noise emissions 70 dB
List price*  431.50 £
just  365.29 £
In Stock
Details
Free shipping **
Show all the tyres in the selected size
Pace ALVENTI
Pace
Pace
ALVENTI
255/40 R21 102Y

Season

 Summer tyres
1 - 2 working days delivery time
limited stock
Tyre label
Tyre label
Roll resistance B Wet grip B Noise emissions 73 dB
just  104.12 £
limited stock
Details
Free shipping **
Minerva MV714
Minerva
Minerva
MV714
255/40 R21 102Y XL

Season

 Summer tyres
2 - 5 working days delivery time
limited stock
Tyre label
Tyre label
Roll resistance C Wet grip C Noise emissions 72 dB
just  106.08 £
limited stock
Details
Free shipping **
APlus Aerix RS01
APlus
Aerix RS01
255/40 ZR21 102Y XL

Season

 Summer tyres
2 - 5 working days delivery time
In Stock
Tyre label
Tyre label
Roll resistance C Wet grip B Noise emissions 72 dB
just  112.25 £
In Stock
Details
Free shipping **
Accelera Iota ST-68
Accelera
Accelera
Iota ST-68
255/40 R21 102W XL

Season

 Summer tyres
1 - 2 working days delivery time
In Stock
Tyre label
Tyre label
Roll resistance C Wet grip C Noise emissions 68 dB
just  112.58 £
In Stock
Details
Free shipping **
Radar Dimax R8+
Radar
Radar
Dimax R8+
255/40 R21 102Y XL EVc

Season

 Summer tyres
1 - 2 working days delivery time
In Stock
Tyre label
Tyre label
Roll resistance C Wet grip B Noise emissions 73 dB
just  112.96 £
In Stock
Details
Free shipping **
Road Rider Strada SUV
Road Rider
Strada SUV
255/40 R21 102Y XL

Season

 Summer tyres
1 - 2 working days delivery time
In Stock
Tyre label
Tyre label
Roll resistance C Wet grip B Noise emissions 71 dB
just  120.67 £
In Stock
Details
Free shipping **
Leao Nova Force C/S
Leao
Leao
Nova Force C/S
255/40 R21 102W XL

Season

 Summer tyres
2 - 5 working days delivery time
limited stock
Tyre label
Tyre label
Roll resistance C Wet grip B Noise emissions 73 dB
just  121.91 £
limited stock
Details
Free shipping **
RoadX SU01
RoadX
SU01
255/40 R21 102Y XL

Season

 Summer tyres
2 - 5 working days delivery time
In Stock
Tyre label
Tyre label
Roll resistance C Wet grip B Noise emissions 71 dB
just  126.08 £
In Stock
Details
Free shipping **
Admiral GRB009
Admiral
GRB009
255/40 R21 102Y XL

Season

 Summer tyres
1 - 2 working days delivery time
In Stock
Tyre label
Tyre label
Roll resistance C Wet grip B Noise emissions 71 dB
just  128.75 £
In Stock
Details
Free shipping **
Minerva Frostrack UHP
Minerva
Minerva
Frostrack UHP
255/40 R21 102V XL

Season

 Winter tyres
2 - 5 working days delivery time
In Stock
Tyre label
Tyre label
Roll resistance C Wet grip C Noise emissions 73 dB
Client reviews rating:
Client reviews rating

More than 5 billion kilometers. <span><em>Tyretest.com</em></span> 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 driven 33000
(1)

Reifentest.com

just  129.00 £
In Stock
Details
Free shipping **
Tracmax X Privilo RS01
Tracmax
X Privilo RS01
255/40 R21 102Y XL

Season

 Summer tyres
2 - 5 working days delivery time
limited stock
Tyre label
Tyre label
Roll resistance C Wet grip C Noise emissions 71 dB
just  129.50 £
limited stock
Details
Free shipping **
RoadX RXQuest Sport SUV
RoadX
RXQuest Sport SUV
255/40 R21 102Y XL

Season

 Summer tyres
2 - 5 working days delivery time
In Stock
Tyre label
Tyre label
Roll resistance B Wet grip A Noise emissions 71 dB
just  132.15 £
In Stock
Details
Free shipping **
General Grabber GT Plus
General
General
Grabber GT Plus
255/40 R21 102Y XL EVc, with kerbing rib

Season

 Summer tyres
2 - 4 working days delivery time
limited stock
Tyre label
Tyre label
Roll resistance C Wet grip A Noise emissions 73 dB
List price*  211.00 £
just  140.34 £
limited stock
Details
Free shipping **
Dynamo Street-H Pursuit SUV
Dynamo
Street-H Pursuit SUV
255/40 R21 102Y XL with rim protection (MFS)

Season

 Summer tyres
2 - 5 working days delivery time
limited stock
Tyre label
Tyre label
Roll resistance B Wet grip A Noise emissions 71 dB
just  142.83 £
limited stock
Details
Free shipping **
There are 28 of 112 tyres displayed
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** Prices include VAT and delivery within mainland UK (excl. Scottish Highlands).

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