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  4. Diamondback 235 / 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  Diamondback  235/40  18   

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Nokian Powerproof 1
Nokian
Nokian
Powerproof 1
235/40 ZR18 95Y XL with rim protection (MFS)

Season

 Summer tyres
2 - 5 working days delivery time
In Stock
Tyre label
Tyre label
Roll resistance C Wet grip A Noise emissions 72 dB
List price*  172.00 £
just  106.93 £
In Stock
Details
Free shipping **
Pirelli Powergy 2
Pirelli
Pirelli
Powergy 2
235/40 R18 95Y 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 B Noise emissions 69 dB
List price*  183.00 £
just  107.02 £
In Stock
Details
Free shipping **
Kleber Dynaxer HP 5
Kleber
Kleber
Dynaxer HP 5
235/40 R18 95Y XL

Season

 Summer tyres
2 - 5 working days delivery time
limited stock
Tyre label
Tyre label
Roll resistance B Wet grip A Noise emissions 70 dB
just  107.47 £
limited stock
Details
Free shipping **
BF Goodrich Advantage 2
BF Goodrich
BF Goodrich
Advantage 2
235/40 R18 95Y XL EV Suitable, with rim protection ridge (FSL)

Season

 Summer tyres
2 - 5 working days delivery time
In Stock
Tyre label
Tyre label
Roll resistance B Wet grip A Noise emissions 70 dB
just  107.77 £
In Stock
Details
Free shipping **
Nokian Seasonproof 2
Nokian
Nokian
Seasonproof 2
235/40 R18 95Y XL Aramid Sidewalls, 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 A Noise emissions 70 dB
List price*  208.00 £
just  107.97 £
limited stock
Details
Free shipping **
Maxxis Victra Sport 5
Maxxis
Maxxis
Victra Sport 5
235/40 ZR18 95Y XL with rim protection ridge (FSL)

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
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 269003
(1)

Reifentest.com

just  108.03 £
limited stock
Details
Free shipping **
Grenlander Greenwing A/S
Grenlander
Greenwing A/S
235/40 ZR18 95W XL

Season

 All-season tyres
2 - 5 working days delivery time
In Stock
Tyre label
Tyre label
Roll resistance C Wet grip C Noise emissions 72 dB
just  108.31 £
In Stock
Details
Free shipping **
Mirage W562
Mirage
W562
235/40 R18 95H XL

Season

 Winter tyres
2 - 5 working days delivery time
In Stock
Tyre label
Tyre label
Roll resistance E Wet grip D Noise emissions 72 dB
just  108.35 £
In Stock
Details
Free shipping **
Petlas Velox Sport PT741
Petlas
Petlas
Velox Sport PT741
235/40 R18 95W XL

Season

 Summer tyres
2 - 5 working days delivery time
limited stock
Tyre label
Tyre label
Roll resistance D 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.

(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 859097
07.12.2025 from Padraic Tierney
so after 14 months/25166 km of driving these tyres are down to 3 or 4mm on the front and 5.5 mm on the back. I&#39;ve never had any need to brake hard in the wet but i have corned sharply at 90 km/hr using these tyres and they do hold the road well. I know i should rotate these but its hard to get time for everything. They are very good value but maybe a bit noisy on the road. I bought 4 together and at &euro;120 each when you compare to michelin pilot sport is really great value for money. They are wearing fairly evenly too so overall the verdict is i would highly recommend these.
(2)

Reifentest.com

just  108.38 £
limited stock
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Avon ZV7
Avon
Avon
ZV7
235/40 R18 95Y XL with Rim flange protection

Season

 Summer tyres
2 - 5 working days delivery time
limited stock
Tyre label
Tyre label
Roll resistance D Wet grip A 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.

(15)
Average based on 15 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 819910
08.10.2023 from David Davies
Hold the road well, good braking in wet or dry, good wear, quiet tyre, reasonably priced.
08.01.2023 from Karl
These are a great tyre at a decent price point, and although the price has been creeping up, I would buy them again. The wet weather handling is especially good and gives real confidence in heavy rain.
10.11.2022 from Will Allen
Very confidence inspiring tyre sadly all four tyres started cracking badly at the base of the tread grove after only two years. I rated Avon tyres very highly in the past but I would never buy the brand again.
24.03.2020 from Ricky
Was warned against this make and model by a friend in kwik fit who said the tyres perish and crack along the tread and I&rsquo;m aft he was right. I only ignored his advice because they were cheap.
(15)

Reifentest.com

just  108.49 £
limited stock
Details
Free shipping **
Yokohama BluEarth-GT (AE51)
Yokohama
Yokohama
BluEarth-GT (AE51)
235/40 R18 95W XL BluEarth, RPB

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.

(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  N/A
Driving comfort
Internal noise level
Tyre wear
Fuel consumption
Kilometers driven 151750
03.04.2022 from Nicolae Alexandru Vasile
Very impressed with the overall result. Good money for the great quality tyers. Will buy again
(2)

Reifentest.com

List price*  195.00 £
just  108.92 £
In Stock
Details
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Sebring Summer 3
Sebring
Sebring
Summer 3
235/40 ZR18 95Y XL

Season

 Summer tyres
2 - 5 working days delivery time
In Stock
Tyre label
Tyre label
Roll resistance B Wet grip B Noise emissions 71 dB
just  109.42 £
In Stock
Details
Free shipping **
Bridgestone Potenza Sport Evo
Bridgestone
Bridgestone
Potenza Sport Evo
235/40 ZR18 (95Y) XL Enliten / EV, with rim protection (MFS)

Season

 Summer tyres
2 - 4 working days delivery time
limited stock
Tyre label
Tyre label
Roll resistance D Wet grip A Noise emissions 72 dB
List price*  185.50 £
just  109.79 £
limited stock
Details
Free shipping **
Goodride IceMaster Spike Z-506
Goodride
Goodride
IceMaster Spike Z-506
235/40 R18 95T XL, studded, with rim protection (MFS)

Season

 Winter tyres
2 - 5 working days delivery time
In Stock
just  109.85 £
In Stock
Details
Free shipping **
Hankook Ventus Prime 4 K135
Hankook
Hankook
Ventus Prime 4 K135
235/40 R18 95W XL 4PR 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
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  N/A
Driving comfort
Internal noise level
Tyre wear
Fuel consumption
Kilometers driven 1106979
15.08.2025 from Donald
These tyres are good value and perform safely and well when used within legal parameters on UK roads. One slight negative is road surfaces can sometimes make tyre noise quite high but other than that I will definitely buy them again.
12.09.2024 from Michael
The tyres were 7/10 when I got them, the wet straight line grip is great the dry performance is above average. Quiet and comfortable tyres. The tyre wear is poor, I had new arms,tie rods, drop links and bushings as well as alignment done afterwards. The tyres showed excessive wear on the edge after only 8000 miles. I always check tyre pressure every week.
(2)

Reifentest.com

List price*  168.00 £
just  109.87 £
In Stock
Details
Free shipping **
Kleber Dynaxer HP 5
Kleber
Kleber
Dynaxer HP 5
235/40 R18 91Y

Season

 Summer tyres
2 - 5 working days delivery time
In Stock
Tyre label
Tyre label
Roll resistance C Wet grip A Noise emissions 70 dB
just  110.35 £
In Stock
Details
Free shipping **
Firestone Winterhawk 4
Firestone
Firestone
Winterhawk 4
235/40 R18 95V XL EVc, with rim protection (MFS)

Season

 Winter tyres
2 - 4 working days delivery time
In Stock
Tyre label
Tyre label
Roll resistance D 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
Driving comfort
Internal noise level
Tyre wear
Fuel consumption
Kilometers driven 870688
19.06.2025 from Stuart Johnson
These are an excellent alternative to the Michelin Alpin A3 which I have historically run. They were cracking before wearing out. I needed something that would stick the power of the vehicle and be controllable. These fit the bill admirably.
(1)

Reifentest.com

List price*  192.00 £
just  111.42 £
In Stock
Details
Free shipping **
Hankook Ventus Prime 3 K125
Hankook
Hankook
Ventus Prime 3 K125
235/40 R18 91W 4PR 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 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.

(13)
Average based on 13 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 8453880
10.10.2021 from Mark
Superb grip and feedback from tyre extremely safe handling . Quite
02.12.2020 from Rafal
I changed tyres from Conti Premium and I am preete happy with Hankook. It is also a premium tyre.
22.05.2020 from Pieter
The biggest problem with these tyres ar that they do not have rip protection. I have been using Hancooks on my previous car, so when looking for tyres for my current car, Hancooks came to mind. I had a better driving experience with the tyres that I replaced.
06.12.2019 from White
These tyres give a superb quiet ride. I also have these tyres fitted to the front of my vehicle, which have now completed 45,000 km and the wear is every bit as good as the Michelin tyres they replaced. Although I do not drive in an aggressive manner I have not noticed any detriment in road holding or fuel consumption.
(13)

Reifentest.com

List price*  166.00 £
just  111.48 £
In Stock
Details
Free shipping **
Semperit Speed-Life 3
Semperit
Semperit
Speed-Life 3
235/40 R18 95Y XL EVc, with kerbing rib

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
List price*  172.50 £
just  111.63 £
limited stock
Details
Free shipping **
BF Goodrich Advantage
BF Goodrich
BF Goodrich
Advantage
235/40 R18 95Y XL with rim protection ridge (FSL)

Season

 Summer tyres
2 - 5 working days delivery time
limited stock
Tyre label
Tyre label
Roll resistance C Wet grip A Noise emissions 70 dB
just  111.90 £
limited stock
Details
Free shipping **
Windforce Catchfors UHP
Windforce
Catchfors UHP
235/40 R18 95W

Season

 Summer tyres
2 - 5 working days delivery time
limited stock
Tyre label
Tyre label
Roll resistance D Wet grip C Noise emissions 72 dB
just  112.14 £
limited stock
Details
Free shipping **
Goodyear Vector 4 Seasons Gen-3
Goodyear
Goodyear
Vector 4 Seasons Gen-3
235/40 R18 95W XL EVR, with rim protection (MFS)

Season

 All-season tyres
2 - 4 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.

(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 8211782
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  112.60 £
In Stock
Details
Free shipping **
Kumho WinterCraft WP52+
Kumho
Kumho
WinterCraft WP52+
235/40 ZR18 95W XL EVc

Season

 Winter tyres
2 - 5 working days delivery time
limited stock
Tyre label
Tyre label
Roll resistance C Wet grip B Noise emissions 72 dB
List price*  204.98 £
just  112.68 £
limited stock
Details
Free shipping **
Dynamo Street-H MU02
Dynamo
Street-H MU02
235/40 ZR18 95W XL

Season

 Summer tyres
2 - 5 working days delivery time
In Stock
Tyre label
Tyre label
Roll resistance D Wet grip B Noise emissions 72 dB
just  112.81 £
In Stock
Details
Free shipping **
Continental EcoContact 7 S
Continental
Continental
EcoContact 7 S
235/40 R18 91W EVc, with kerbing rib

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
List price*  205.50 £
just  112.92 £
In Stock
Details
Free shipping **
Roadstone Eurovis Sport 4
Roadstone
Roadstone
Eurovis Sport 4
235/40 R18 95W 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
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 25000
(1)

Reifentest.com

just  112.98 £
limited stock
Details
Free shipping **
Lassa Snoways 4
Lassa
Lassa
Snoways 4
235/40 R18 95V XL

Season

 Winter tyres
2 - 5 working days delivery time
In Stock
Tyre label
Tyre label
Roll resistance D Wet grip C Noise emissions 70 dB
just  113.88 £
In Stock
Details
Free shipping **
Continental UltraContact
Continental
Continental
UltraContact
235/40 R18 95Y XL EVc, with kerbing rib

Season

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

(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 562176
13.07.2025 from Fred Wakeling
Used Tyres on a tour around Europe.
06.09.2024 from Nick Georgiou
just after 7months of normal use you see what happened in the photo below. The Continental in greece refused to renew it so i have to pay 160 euros to put a new one. NEVER continental tires again!!!!!!!!!!!!!!!!!
(3)

Reifentest.com

List price*  208.00 £
just  114.13 £
limited stock
Details
Free shipping **
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