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Home  >  225 / 40 18  >  Diamondback Tyres  >  Diamondback 225 / 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:
 
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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  Diamondback    225/40  18     

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Semperit Speed-Life 3
Semperit
Semperit
Speed-Life 3
225/40 R18 92Y XL EVc, with kerbing rib

Tyre type

 Summer tyres
available
EU Tyre Label
EU Tyre Label
Roll resistance C Wet grip B Noise emissions 72 dB
just  87.51 £
available
Details
Kenda Wintergen 2 KR501
Kenda
Kenda
Wintergen 2 KR501
225/40 R18 92V RF

Tyre type

 Winter tyres
available
EU Tyre Label
EU Tyre Label
Roll resistance D Wet grip B Noise emissions 69 dB
just  87.60 £
available
Details
Zeetex WH1000
Zeetex
Zeetex
WH1000
225/40 R18 92V XL

Tyre type

 Winter tyres
available
EU Tyre Label
EU Tyre Label
Roll resistance D Wet grip C Noise emissions 72 dB
just  85.59 £
available
Details
New
Uniroyal AllSeasonExpert 3
Uniroyal
Uniroyal
AllSeasonExpert 3
225/40 R18 92Y XL EVc, with kerbing rib

Tyre type

 All-season tyres
available
EU Tyre Label
EU Tyre Label
Roll resistance C Wet grip B Noise emissions 72 dB
just  87.75 £
available
Details
Kormoran All Season
Kormoran
Kormoran
All Season
225/40 R18 92W XL

Tyre type

 All-season tyres
limited stock
EU Tyre Label
EU Tyre Label
Roll resistance D Wet grip C Noise emissions 70 dB
just  87.80 £
limited stock
Details
Bridgestone Potenza S001
Bridgestone
Bridgestone
Potenza S001
225/40 R18 92Y XL MO, EVc, with rim protection (MFS)

Tyre type

 Summer tyres
limited stock
EU Tyre Label
EU Tyre Label
Roll resistance C Wet grip B Noise emissions 72 dB
Client reviews rating:
Client reviews rating

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

(38)
Average based on 38 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 10380499
01.11.2021 from Jeremy Nicholls
This is the Volvo recommended tyre on this wheel for this car; generally very happy after Goodyear’s on previous non sporting V70s.
01.11.2020 from Stewart Blake LEISHMAN
This is the second set of the same tyres, and yes they hold the road well. When you have 20 something inch of rubber on the road they can really hold there own. The Which magazine holds Bridgestone to high esteem.
13.10.2020 from Bowber
Great tyres, good grip especially in wet, feel safe! Noise isn’t too crazy, hopefully get some decent mileage out of them
11.07.2020 from Pat
Much better in the wet than Dunlop tyres that were on the car.
(38)

Reifentest.com

just  87.92 £
limited stock
Details
Zeetex WH1000
Zeetex
Zeetex
WH1000
225/40 R18 92V XL

Tyre type

 Winter tyres
available
EU Tyre Label
EU Tyre Label
Roll resistance C Wet grip B Noise emissions 71 dB
just  87.96 £
available
Details
Imperial Snow Dragon UHP
Imperial
Imperial
Snow Dragon UHP
225/40 R18 92V XL

Tyre type

 Winter tyres
available
EU Tyre Label
EU Tyre Label
Roll resistance C Wet grip C Noise emissions 72 dB
just  88.05 £
available
Details
Goodyear EfficientGrip Performance
Goodyear
Goodyear
EfficientGrip Performance
225/40 R18 92W XL, with rim protection (MFS)

Tyre type

 Summer tyres
available
EU Tyre Label
EU Tyre Label
Roll resistance B Wet grip A Noise emissions 72 dB
Client reviews rating:
Client reviews rating

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

(126)
Average based on 126 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 40698864
08.03.2025 from Michael Blunt
The tyres perform well for day to day driving, but lack confindence in the intial turn if your pushing the car. The brakng performance in a straight line whiles in wet is incredible and reliable. Accelerating in the wet very good but not as good as the braking. The tyres do not make much noise on the motorway and seem to be puncture resistant. I would not recommend these tyres for those who want to push the their on the weekend as they simply let go.
26.02.2021 from Arek
Good all-round tyres. Safety & quite.
02.04.2020 from Clive Williams
The tyres have provided a remarkable improvement in handling and grip, inspiring confidence that translates into improved A-B times as well as being more comfortable than the previous tyres i.e. Nexen.
19.03.2020 from Mihai
Good value for money! Recommended!
(126)

Reifentest.com

just  88.19 £
available
Details
Nexen N Fera Sport
Nexen
Nexen
N Fera Sport
225/40 R18 92Y XL 4PR

Tyre type

 Summer tyres
available
EU Tyre Label
EU Tyre Label
Roll resistance D Wet grip B Noise emissions 72 dB
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 driven 504298
06.10.2022 from John
Handling it depends from road quality, but never excellent. Steering feeling is good. Breaking on dry roads insufficient, ABS function even in middle breaking situations. Very low noise,
(2)

Reifentest.com

just  88.20 £
available
Details
Rovelo RPX 988
Rovelo
Rovelo
RPX 988
225/40 R18 92Y XL

Tyre type

 Summer tyres
available
EU Tyre Label
EU Tyre Label
Roll resistance C Wet grip C Noise emissions 72 dB
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 driven 416100
(1)

Reifentest.com

just  88.21 £
available
Details
Vredestein Quatrac
Vredestein
Vredestein
Quatrac
225/40 R18 92W XL EVc, with rim protectionleiste (FSL)

Tyre type

 All-season tyres
available
EU Tyre Label
EU Tyre Label
Roll resistance D Wet grip B Noise emissions 72 dB
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 driven 883062
25.09.2025 from Colin Rf
Originally on rear axle for approx 2 k miles, no wear at all. Now on front axle, grip and feedback in wet and dry in great, including on gravelly / light muddy patches in country parking areas and in cold weather. Most impressive aspect of the Vredesteins is the directional stability ( steering centring) and also quietness on the front axle compared to the neatly new Nankang all weather tyres that were on beforehand. No snow this year so not tested on snow! Highly recommended.
05.09.2023 from Matko
All round good tyre, quite noisy on the highway though. Three out of four tyres developed sidewall dents that I read are just a cosmetic defect luckily.
(4)

Reifentest.com

just  88.50 £
available
Details
Ilink Snowgripper 1
Ilink
Snowgripper 1
225/40 R18 92H XL, with kerbing rib

Tyre type

 Winter tyres
available
EU Tyre Label
EU Tyre Label
Roll resistance C Wet grip D Noise emissions 70 dB
just  88.50 £
available
Details
Kormoran Snow
Kormoran
Kormoran
Snow
225/40 R18 92V XL, with rim protectionleiste (FSL)

Tyre type

 Winter tyres
available
EU Tyre Label
EU Tyre Label
Roll resistance D Wet grip C Noise emissions 72 dB
just  88.65 £
available
Details
Barum Quartaris 6
Barum
Barum
Quartaris 6
225/40 R18 92Y XL EVc, with kerbing rib

Tyre type

 All-season tyres
limited stock
EU Tyre Label
EU Tyre Label
Roll resistance D Wet grip B Noise emissions 72 dB
just  88.66 £
limited stock
Details
Goodyear Eagle F1 Asymmetric 6
Goodyear
Goodyear
Eagle F1 Asymmetric 6
225/40 R18 92Y XL AO, EVR, with rim protection (MFS)

Tyre type

 Summer tyres
limited stock
EU Tyre Label
EU Tyre Label
Roll resistance B Wet grip A Noise emissions 70 dB
Client reviews rating:
Client reviews rating

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

(57)
Average based on 57 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 8343440
07.10.2023 from Simon Hall
Amazing tyres, grip is excellent, comfort and noise are excellent. the only thing i can fault is that the wear isn't anything special. Down to 4mm after 6000 miles. My tyre size is 245/35R18 but tyretest will not let me add the correct size above.
10.08.2023 from DanB
Excellent tyres chosen via the reviews by Jon @ tyrereviews.co.uk - they faired very well against the likes of the Michelin PS5s and at the time of buying (Feb2023) the Goodyears were £250 cheaper than the PS5s; but more or less neck & neck with them in the tyre review! That swung the decision for me, more so with the money saving!
23.09.2022 from James g
Fuel consumption high
07.02.2022 from Spiros
Car Driven : BMW 425D 225Hp . Quite quietly from the start until the first 10,000 km they kept a relatively low noise level until the end of their lives. Relatively comfortable especially considering that is a runflat tire. The tire tread still retains its original groove and design but has significant wear points on both edge and there are some small tire detachments. In the few rains we have in Greece it never had a hadling problem or breaking and did not create any feeling of insecurity. in short it is a good quiet tire ROF tire, comfortable and efficient in fast driving.
(57)

Reifentest.com

just  88.79 £
limited stock
Details
Fortuna Gowin UHP
Fortuna
Fortuna
Gowin UHP
225/40 R18 92V XL

Tyre type

 Winter tyres
limited stock
EU Tyre Label
EU Tyre Label
Roll resistance D Wet grip D Noise emissions 68 dB
just  88.85 £
limited stock
Details
Toyo Proxes Sport 2
Toyo
Toyo
Proxes Sport 2
225/40 R18 92Y XL, with rim protectionleiste (FSL)

Tyre type

 Summer tyres
available
EU Tyre Label
EU Tyre Label
Roll resistance D Wet grip A Noise emissions 71 dB
just  88.96 £
available
Details
Mabor Sport-Jet 5
Mabor
Mabor
Sport-Jet 5
225/40 R18 92Y XL, EV

Tyre type

 Summer tyres
available
EU Tyre Label
EU Tyre Label
Roll resistance C Wet grip B Noise emissions 72 dB
just  89.13 £
available
Details
Uniroyal AllSeasonExpert 2
Uniroyal
Uniroyal
AllSeasonExpert 2
225/40 R18 92V XL EVc, with kerbing rib

Tyre type

 All-season tyres
limited stock
EU Tyre Label
EU Tyre Label
Roll resistance D Wet grip C Noise emissions 72 dB
Client reviews rating:
Client reviews rating

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

(10)
Average based on 10 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 3589509
20.02.2026 from Mr Neil Richard Parnham
These are a thoroughly dependable tyre and the Expert 2 (and the later Expert 3) are superb tyres. In addition to the stated vehicle I have a set on my wife's 2014 Audi A3 and our 'spare car' a 2009 Fiat Panda 4x4. They are all on all year round and have acceptable wear even in hot summers
06.02.2026 from Jim Hutchinson
What makes these tyres stand out is their performance on very wet roads or standing water.
27.02.2025 from Michael Payne
I am a careful driver. Mostly urban with some motorway driving. The tyres I chose are all season. Whilst I live in Edinburgh City, when snow falls I need to drive 800m and up 2 hills in order to get to a road that is kept clear and often there are cars and a bus strewn across the road. Amazing but true. These tyres have allowed me to bypass these cars and proceed to the swept roadway. 2 times this winter. Scarcely believable that people don't know how to drive in the snow. They are sure footed in frost too.
22.01.2025 from Mr Neil Richard Parnham
We have owned this car for almost 11 years now and the last 9 years have been on firstly Uniroyal MS+77 205/55 R16 91H and then for the last 3 years on AllSeason Expert 2 which is a vastly improved tyre. The latter is so much quieter and returns improved fuel consumption and I believe better grip in wintry conditions
(10)

Reifentest.com

just  88.40 £
limited stock
Details
Novex All season 3E
Novex
Novex
All season 3E
225/40 R18 92Y XL

Tyre type

 All-season tyres
limited stock
EU Tyre Label
EU Tyre Label
Roll resistance D Wet grip C Noise emissions 72 dB
just  89.36 £
limited stock
Details
Dynamo Snow-H MWH01
Dynamo
Snow-H MWH01
225/40 R18 92H XL

Tyre type

 Winter tyres
limited stock
just  89.40 £
limited stock
Details
Trazano Z507
Trazano
Trazano
Z507
225/40 R18 92V XL

Tyre type

 Winter tyres
available
EU Tyre Label
EU Tyre Label
Roll resistance C Wet grip C Noise emissions 72 dB
just  89.40 £
available
Details
Toyo Proxes Comfort
Toyo
Toyo
Proxes Comfort
225/40 R18 92W XL, with rim protectionleiste (FSL)

Tyre type

 Summer tyres
available
EU Tyre Label
EU Tyre Label
Roll resistance D Wet grip A Noise emissions 70 dB
Client reviews rating:
Client reviews rating

More than 5 billion kilometers. Tyretest.com 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 138805
31.08.2023 from Kalin
Bad grip, handling and braking on wet roads
(3)

Reifentest.com

just  89.57 £
available
Details
Tourador Winter Pro Max
Tourador
Winter Pro Max
225/40 R18 92V XL

Tyre type

 Winter tyres
available
just  89.59 £
available
Details
Semperit All Season-Grip
Semperit
Semperit
All Season-Grip
225/40 R18 92Y XL EVc, with kerbing rib

Tyre type

 All-season tyres
available
EU Tyre Label
EU Tyre Label
Roll resistance C Wet grip B Noise emissions 72 dB
just  89.72 £
available
Details
Nexen N blue 4 Season 2
Nexen
Nexen
N blue 4 Season 2
225/40 R18 92Y XL 4PR

Tyre type

 All-season tyres
available
EU Tyre Label
EU Tyre Label
Roll resistance D Wet grip A Noise emissions 72 dB
just  89.74 £
available
Details
Dunlop Blue Response TG
Dunlop
Dunlop
Blue Response TG
225/40 R18 92W XL, with rim protection (MFS) BLK, EVs

Tyre type

 Summer tyres
available
EU Tyre Label
EU Tyre Label
Roll resistance C Wet grip A Noise emissions 70 dB
just  90.29 £
available
Details
There are 28 of 620 tyres displayed
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