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  2. 255 / 40 18
  3. GT Radial tyres
  4. GT Radial 255 / 40 18
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.
 

Our offer for  GT Radial  255/40  18   

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Wanli SA305
Wanli
Wanli
SA305
255/40 ZR18 99W XL

Season

 Summer tyres
2 - 5 working days delivery time
In Stock
Tyre label
Tyre label
Roll resistance C Wet grip B Noise emissions 73 dB
just  86.17 £
In Stock
Details
Free shipping **
Westlake ZuperAce Z-007
Westlake
Westlake
ZuperAce Z-007
255/40 R18 99Y XL

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
just  86.52 £
limited stock
Details
Free shipping **
Superia EcoBlue UHP 2
Superia
EcoBlue UHP 2
255/40 R18 99W XL

Season

 Summer tyres
2 - 5 working days delivery time
In Stock
Tyre label
Tyre label
Roll resistance C Wet grip B Noise emissions 69 dB
just  86.79 £
In Stock
Details
Free shipping **
RoadX RXMotion DU71
RoadX
RXMotion DU71
255/40 ZR18 99Y 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  86.84 £
In Stock
Details
Free shipping **
Transmate Sport D1
Transmate
Sport D1
255/40 ZR18 99W 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  86.89 £
In Stock
Details
Free shipping **
Fortuna Eco Plus UHP
Fortuna
Fortuna
Eco Plus UHP
255/40 R18 99W XL

Season

 Summer tyres
2 - 5 working days delivery time
In Stock
Tyre label
Tyre label
Roll resistance C Wet grip B Noise emissions 69 dB
just  87.14 £
In Stock
Details
Free shipping **
Westlake Z-507
Westlake
Westlake
Z-507
255/40 R18 99V XL

Season

 Winter tyres
2 - 5 working days delivery time
limited stock
Tyre label
Tyre label
Roll resistance C Wet grip C Noise emissions 72 dB
just  87.60 £
limited stock
Details
Free shipping **
Radar Dimax Winter
Radar
Radar
Dimax Winter
255/40 R18 99V XL

Season

 Winter tyres
2 - 5 working days delivery time
In Stock
Tyre label
Tyre label
Roll resistance D Wet grip B Noise emissions 73 dB
just  87.64 £
In Stock
Details
Free shipping **
Arivo Ultra ARZ-5
Arivo
Ultra ARZ-5
255/40 R18 99W 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
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  N/A
Driving comfort
Internal noise level
Tyre wear
Fuel consumption
Kilometers driven 18000
(1)

Reifentest.com

just  88.49 £
In Stock
Details
Free shipping **
APlus A702
APlus
A702
255/40 R18 99V XL

Season

 Winter tyres
2 - 4 working days delivery time
limited stock
Tyre label
Tyre label
Roll resistance C Wet grip B Noise emissions 73 dB
just  89.65 £
limited stock
Details
Free shipping **
Admiral RCB009
Admiral
RCB009
255/40 ZR18 99Y XL

Season

 Summer tyres
1 - 2 working days delivery time
In Stock
Tyre label
Tyre label
Roll resistance D Wet grip C Noise emissions 73 dB
just  89.83 £
In Stock
Details
Free shipping **
APlus Aerix RS01
APlus
Aerix RS01
255/40 ZR18 99Y XL

Season

 Summer tyres
2 - 5 working days delivery time
limited stock
Tyre label
Tyre label
Roll resistance C Wet grip B Noise emissions 72 dB
just  89.90 £
limited stock
Details
Free shipping **
Landsail RapidDragon
Landsail
Landsail
RapidDragon
255/40 R18 99W XL

Season

 Summer tyres
2 - 5 working days delivery time
In Stock
Tyre label
Tyre label
Roll resistance B Wet grip B Noise emissions 73 dB
just  91.16 £
In Stock
Details
Free shipping **
Radar Dimax Sport
Radar
Radar
Dimax Sport
255/40 ZR18 99Y XL EVc

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  91.26 £
limited stock
Details
Free shipping **
Dynamo Street-H MU71
Dynamo
Street-H MU71
255/40 ZR18 99Y XL

Season

 Summer tyres
1 - 2 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.

(5)
Average based on 5 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 72499
18.04.2025 from Rafa&#x142;
I had them on the front from new, after 2000 miles they start generating more noise ,after 10000 miles (1 year) depth tread was 2mm. Never buy any cheap tyres again .
23.02.2025 from Ricardo Rodrigues
Good grip on dry and wet , the noise is not bad but only lasted 10k miles. All uniform wear but only lasted 10k with very smooth driving
25.11.2024 from Liam Denning
I&rsquo;ve tried to push these tyres to the limit and they hold up really well. Great performance overall, doing as well as the premium priced Continentals they replaced. Well impressed!
22.08.2024 from Kevin Broderick
Really good tyres. Bought on the mechanics recommendation and I&rsquo;m delighted I did. Just as good as the Michelins they replaced. Excellent grip on wet roads even at high speed.
(5)

Reifentest.com

just  91.42 £
In Stock
Details
Free shipping **
Arivo Winmaster ARW 3
Arivo
Winmaster ARW 3
255/40 R18 99H XL

Season

 Winter tyres
2 - 5 working days delivery time
In Stock
Tyre label
Tyre label
Roll resistance C Wet grip D Noise emissions 70 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 45060
30.11.2023 from Patrick
Tyres are too soft. If you try to turn car feels like with flat tyre. Car wants to go sideways. I am really sad About this tyres and I will not recommend them to anyone who wants to live..
(2)

Reifentest.com

just  91.45 £
In Stock
Details
Free shipping **
Sailun Atrezzo ZSR2
Sailun
Sailun
Atrezzo ZSR2
255/40 ZR18 99Y XL 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 69 dB
just  91.80 £
In Stock
Details
Free shipping **
Grenlander Landcross
Grenlander
Landcross
255/40 ZR18 99W XL

Season

 Summer tyres
2 - 5 working days delivery time
In Stock
Tyre label
Tyre label
Roll resistance D Wet grip C Noise emissions 69 dB
just  93.01 £
In Stock
Details
Free shipping **
Trazano Z507
Trazano
Trazano
Z507
255/40 R18 99V

Season

 Winter tyres
1 - 2 working days delivery time
In Stock
Tyre label
Tyre label
Roll resistance C Wet grip C Noise emissions 72 dB
just  93.87 £
In Stock
Details
Free shipping **
Tracmax Trac Saver
Tracmax
Trac Saver
255/40 ZR18 99Y XL

Season

 All-season tyres
2 - 5 working days delivery time
In Stock
Tyre label
Tyre label
Roll resistance C Wet grip B Noise emissions 72 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 930810
10.04.2025 from Ivan
This is a worst tyre i ever drive! On the wet road is very dangerious!
(1)

Reifentest.com

just  94.44 £
In Stock
Details
Free shipping **
Churchill RCB009
Churchill
RCB009
255/40 ZR18 99Y XL

Season

 Summer tyres
1 - 2 working days delivery time
In Stock
Tyre label
Tyre label
Roll resistance D Wet grip C Noise emissions 73 dB
just  94.94 £
In Stock
Details
Free shipping **
Grenlander Icehawke I
Grenlander
Icehawke I
255/40 R18 99H XL

Season

 Winter tyres
2 - 5 working days delivery time
limited stock
Tyre label
Tyre label
Roll resistance C Wet grip D Noise emissions 70 dB
just  95.55 £
limited stock
Details
Free shipping **
Sailun Ice Blazer Alpine Evo1
Sailun
Sailun
Ice Blazer Alpine Evo1
255/40 R18 99V XL

Season

 Winter tyres
2 - 5 working days delivery time
limited stock
Tyre label
Tyre label
Roll resistance D Wet grip B Noise emissions 72 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 212499
16.10.2024 from Jurijs
One of the best winter tyres I had from year 2007, when I started to drive my own car. Confident driving also with one side on ice, another on dry surface, on wet snow or just wet surface.
(1)

Reifentest.com

just  95.88 £
limited stock
Details
Free shipping **
RoadX U11
RoadX
U11
255/40 ZR18 99Y XL

Season

 Summer tyres
2 - 5 working days delivery time
In Stock
Tyre label
Tyre label
Roll resistance D Wet grip C Noise emissions 73 dB
just  96.00 £
In Stock
Details
Free shipping **
Grenlander Enri U08
Grenlander
Enri U08
255/40 ZR18 99W XL

Season

 Summer tyres
2 - 5 working days delivery time
limited stock
Tyre label
Tyre label
Roll resistance C Wet grip B Noise emissions 71 dB
just  96.25 £
limited stock
Details
Free shipping **
Grenlander L-Zeal 56
Grenlander
L-Zeal 56
255/40 ZR18 99W 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  96.54 £
In Stock
Details
Free shipping **
Pace ALVENTI
Pace
Pace
ALVENTI
255/40 ZR18 95W

Season

 Summer tyres
1 - 2 working days delivery time
In Stock
Tyre label
Tyre label
Roll resistance D Wet grip B Noise emissions 72 dB
just  101.13 £
In Stock
Details
Free shipping **
Rotalla Setula 4 Season RA03
Rotalla
Rotalla
Setula 4 Season RA03
255/40 ZR18 99Y XL, with rim protection (MFS)

Season

 All-season tyres
2 - 5 working days delivery time
limited stock
Tyre label
Tyre label
Roll resistance C Wet grip B Noise emissions 72 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.

(46)
Average based on 46 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 6781640
19.03.2025 from Tina F
Definitely the best tyres I&#39;ve owned to date. I&#39;m driving 28years and always had an issue or two with tyres, so decided to go for all season tyres online so I could see reviews and specs . Bought full set of 4 Rotalla after seeing reviews. I am not an overly cautious driver let&#39;s say, and I would take roundabouts at a fair enough speed, previous tyres would struggle on wet days. I instantly felt a huge difference on roundabouts, and grip on breaking on colder mornings . I&#39;m extremely happy with the road grip and performance on sunny days AND colder frosty mornings. My car feels safer to drive for sure. I drive in city, rural and motorway roads regularly so I can say I have tested these tyres fully. At a guess I&#39;ve done approx 2.5k+ miles on these tyres. Fuel efficiency has improved slightly, but my car is old, so wasnt expecting miracles. I&#39;m changing cars soon and I just hope I can get these tyres or very close to, for the new car. That&#39;s how happy I am with them. Only reason I might have not given 5 stars all round is because I cannot judge the noise or fuel based on my own cars age and knowledge of noise level. Highly recommend tho, delighted I took the chance
20.08.2024 from Adam Galley
As good a more premium brands at half their price
01.10.2023 from George Wade
For the price I paid and the conditions I drove in such as -14&deg;c frost the tyres performed very well.
11.07.2022 from Greg
Really good tyres, couldnt fault them. Great grip in wet and snow. Deff. will buy them again. Why pay 100+ per tyre when You could have pair of these for this money.
(46)

Reifentest.com

just  101.35 £
limited stock
Details
Free shipping **
There are 28 of 215 tyres displayed
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