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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:
 
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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.
 

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  245/40  21   

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Prices include VAT and delivery within Ireland

Goodyear Vector 4 Seasons Gen-3
Goodyear
Goodyear
Vector 4 Seasons Gen-3
245/40 R21 100W XL, with rim protection (MFS)

Season

 All-season tyres
2 - 4 working days delivery time
limited stock
Tyre label
Tyre label
Roll resistance C Wet grip C 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.

(34)
Average based on 34 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 8223376
08.06.2026 from J Amin
This is the second time I have bought a full set of these tyres. I mostly drive on motorways, country roads and off road. My fuel efficiency went up when I put on my first set. The ride is more comfortable and the grip is excellent in dry and wet weather. They have performed well on snow. Despite being all weather the rate of wear is very good. I would definitely buy them again.
18.09.2024 from Ersan
My tyre size was 205 55 16 but not in the list! Unbelieveble in wet surface but average on dry breaking. Good aquaplanning and snow traction. Good comfort but average noise.
06.03.2024 from Viktor
Tires keep the vehicle nicely on the road, no traction problems. On ice British roads they perform great no problems stopping or going.
12.01.2022 from Scott
I&#39;ll be honest I&#39;ve never purchased all season or winter tyres before, I&#39;ve always made do with mid range to premium summer tyres. During winter I&#39;ve very rarely struggled in snow with summer tyres but after fitting the Goodyear Vector 4 Seasons Gen-3 tyres the performance in snow is night and day, no sliding, very little loss of traction and braking distance is vastly reduced. These tyres are fantastic, it&#39;s too soon to comment on wear rate which will possibly play a factor in if I purchase again but so far so good. I would highly recommend them too anyone.
(34)

Reifentest.com

just  195.49 £
limited stock
Details
Free shipping **
Minerva Ecospeed 2 SUV
Minerva
Minerva
Ecospeed 2 SUV
245/40 R21 100Y 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  92.90 £
limited stock
Details
Free shipping **
RoadX RXQuest Sport SUV
RoadX
RXQuest Sport SUV
245/40 R21 100W XL

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
just  105.19 £
In Stock
Details
Free shipping **
Imperial Ecosport SUV
Imperial
Imperial
Ecosport SUV
245/40 R21 100Y XL SUV

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  110.85 £
limited stock
Details
Free shipping **
Tristar Sportpower
Tristar
Tristar
Sportpower
245/40 R21 100Y XL SUV

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
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.

(3)
Average based on 3 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 driven 330976
04.12.2018 from Michael
Surprising amount of wheelspin from standstill in wet for 4wd suv. Also feels like the side walls are floppy on full lock However we have not driven the car with other tyres so nothing to compare against.
03.11.2018 from Pete
Have been very pleasantly surprised as to haw good the Tristar Tyers have been I drive a mix of roads Motorway A road and country roads and the tyers have proformed very well in the dry and also in the wet.
(3)

Reifentest.com

just  111.92 £
limited stock
Details
Free shipping **
Sailun Atrezzo ZSR2 SUV
Sailun
Sailun
Atrezzo ZSR2 SUV
245/40 R21 100Y 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  126.13 £
In Stock
Details
Free shipping **
Hankook iON evo (IK01A)
Hankook
Hankook
iON evo (IK01A)
245/40 ZR21 100Y XL 4PR EV, SUV, SoundAbsorber, with rim protection (MFS) SBL

Season

 Summer tyres
2 - 5 working days delivery time
In Stock
Tyre label
Tyre label
Roll resistance B Wet grip A Noise emissions 69 dB
List price*  461.00 £
just  235.09 £
In Stock
Details
Free shipping **
Pirelli P Zero PZ4 LS
Pirelli
Pirelli
P Zero PZ4 LS
245/40 R21 100V XL VOL

Season

 Summer tyres
2 - 5 working days delivery time
limited stock
Tyre label
Tyre label
Roll resistance C Wet grip A Noise emissions 72 dB
List price*  447.00 £
just  258.98 £
limited stock
Details
Free shipping **
Pirelli P Zero PZ4 LS
Pirelli
Pirelli
P Zero PZ4 LS
245/40 R21 100W XL PNCS, VOL, with rim protection (MFS)

Season

 Summer tyres
2 - 5 working days delivery time
limited stock
Tyre label
Tyre label
Roll resistance B Wet grip B Noise emissions 70 dB
just  286.23 £
limited stock
Details
Free shipping **
Pirelli P Zero PZ4 LS
Pirelli
Pirelli
P Zero PZ4 LS
245/40 R21 100W XL Elect, with rim protection (MFS)

Season

 Summer tyres
2 - 5 working days delivery time
In Stock
Tyre label
Tyre label
Roll resistance B Wet grip A Noise emissions 72 dB
List price*  447.00 £
just  327.38 £
In Stock
Details
Free shipping **
Pirelli P Zero PZ4 LS Run Flat
Pirelli
Pirelli
P Zero PZ4 LS Run Flat
245/40 R21 100Y XL *, with rim protection (MFS), runflat

Season

 Summer tyres
2 - 5 working days delivery time
limited stock
Tyre label
Tyre label
Roll resistance B Wet grip A Noise emissions 69 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.

(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 driven 19002
(2)

Reifentest.com

List price*  537.00 £
just  343.20 £
limited stock
Details
Free shipping **
Pirelli P Zero PZ4 LS
Pirelli
Pirelli
P Zero PZ4 LS
245/40 R21 100W XL PNCS, VOL, with rim protection (MFS)

Season

 Summer tyres
2 - 5 working days delivery time
limited stock
Tyre label
Tyre label
Roll resistance B Wet grip B Noise emissions 70 dB
List price*  472.00 £
just  346.14 £
limited stock
Details
Free shipping **
Hankook iON i*cept (IW01A)
Hankook
Hankook
iON i*cept (IW01A)
245/40 R21 100V XL 4PR EV, SUV, SoundAbsorber, 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 69 dB
List price*  500.50 £
just  399.22 £
limited stock
Details
Free shipping **
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** Prices include VAT and delivery within mainland UK (excl. Scottish Highlands).

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