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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-Grip 5
Semperit
Semperit
Speed-Grip 5
225/40 R18 92V XL EVc, with kerbing rib

Tyre type

 Winter tyres
limited stock
EU Tyre Label
EU Tyre Label
Roll resistance D Wet grip B Noise emissions 72 dB
just  105.40 £
limited stock
Details
Bestdrive Winter
Bestdrive
Winter
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  105.42 £
available
Details
Bridgestone Turanza All season 6
Bridgestone
Bridgestone
Turanza All season 6
225/40 R18 92Y XL (+), Enliten / EV

Tyre type

 All-season tyres
available
EU Tyre Label
EU Tyre Label
Roll resistance C Wet grip B 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.

(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 494405
06.09.2025 from Zoran
I have front set of 2 tires 1 year and around 20000km old, and rear set 6 months and around 10000km. Tyres are excellent for my car on dry and wet. There's not much snow in this part of England, but was some WET snow last winter and tyres were good on start and in curves but on braking just slide (wet snow i suppose). I have been on the road trip this summer 5000km+, and tyres aren't worn at all. Good grip in curves on motorway at high speed (up to 180 km/h) on dry and wet.
(4)

Reifentest.com

just  105.49 £
available
Details
BF Goodrich Advantage All-Season
BF Goodrich
BF Goodrich
Advantage All-Season
225/40 R18 92W XL EV Suitable

Tyre type

 All-season tyres
available
EU Tyre Label
EU Tyre Label
Roll resistance D Wet grip B Noise emissions 69 dB
just  105.65 £
available
Details
Falken ZIEX ZE914 ECORUN
Falken
Falken
ZIEX ZE914 ECORUN
225/40 R18 92W XL Ecorun, with rim protection (MFS)

Tyre type

 Summer tyres
available
just  105.69 £
available
Details
Continental PremiumContact 6 - ContiRe.Tex
Continental
Continental
PremiumContact 6 - ContiRe.Tex
225/40 R18 92Y XL EVc, with kerbing rib

Tyre type

 Summer tyres
limited stock
EU Tyre Label
EU Tyre Label
Roll resistance C Wet grip A Noise emissions 72 dB
just  105.88 £
limited stock
Details
Hankook Kinergy 4S² H750
Hankook
Hankook
Kinergy 4S² H750
225/40 R18 92Y XL

Tyre type

 All-season tyres
available
EU Tyre Label
EU Tyre Label
Roll resistance C Wet grip B Noise emissions 72 dB
just  106.10 £
available
Details
Uniroyal WinterExpert
Uniroyal
Uniroyal
WinterExpert
225/40 R18 92V XL EVc, with kerbing rib

Tyre type

 Winter 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 773448
(4)

Reifentest.com

just  106.55 £
available
Details
Sailun Atrezzo 4Seasons Pro
Sailun
Sailun
Atrezzo 4Seasons Pro
225/40 R18 92Y XL

Tyre type

 All-season tyres
limited stock
just  106.94 £
limited stock
Details
Riken Snow
Riken
Riken
Snow
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  107.08 £
available
Details
Grenlander Winter GL868
Grenlander
Winter GL868
225/40 R18 92H XL

Tyre type

 Winter tyres
available
EU Tyre Label
EU Tyre Label
Roll resistance C Wet grip C Noise emissions 70 dB
just  107.11 £
available
Details
Kapsen K3000
Kapsen
K3000
225/40 R18 92W

Tyre type

 Summer tyres
limited stock
just  107.25 £
limited stock
Details
Giti AllSeason AS1
Giti
AllSeason AS1
225/40 R18 92W XL

Tyre type

 All-season tyres
available
EU Tyre Label
EU Tyre Label
Roll resistance D Wet grip B Noise emissions 70 dB
just  107.53 £
available
Details
Rovelo RWS 677
Rovelo
Rovelo
RWS 677
225/40 R18 92H XL studdable

Tyre type

 Winter tyres
available
EU Tyre Label
EU Tyre Label
Roll resistance D Wet grip D Noise emissions 72 dB
just  107.99 £
available
Details
Sunny Wintermax NW211
Sunny
Sunny
Wintermax NW211
225/40 R18 92V XL, with rim protection (MFS)

Tyre type

 Winter 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.

(8)
Average based on 8 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 2501434
09.03.2020 from Sebastian Krystyan
Great tyre and value for money Amazing grip and breaking in any conditions. I'm aggressive and active driver with 205 BHP, and tyre never failed me. Recommended to all.
21.08.2019 from Rob
Terrible grip in dry and wet. They are dangerous due to the amount drift. I thought they were low on pressure when I first used them. Only fitted to the rear and cause back end to drift when corning at speed. I have no confidence in cornering with them. They are okay in the snow though so if you're using only in snow they should be okay.
(8)

Reifentest.com

just  107.99 £
available
Details
Aptany RW211
Aptany
RW211
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  108.02 £
available
Details
Toyo Proxes Comfort
Toyo
Toyo
Proxes Comfort
225/40 R18 92W XL

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  108.09 £
available
Details
Falken EUROWINTER HS02PRO
Falken
Falken
EUROWINTER HS02PRO
225/40 R18 92W XL, with rim protection (MFS) NBLK, VCs

Tyre type

 Winter tyres
available
EU Tyre Label
EU Tyre Label
Roll resistance D Wet grip B Noise emissions 72 dB
just  108.53 £
available
Details
Hankook Ventus S1 Evo 3 K127B HRS
Hankook
Hankook
Ventus S1 Evo 3 K127B HRS
225/40 R18 92Y XL 4PR, with rim protection (MFS), run-flat SBL

Tyre type

 Summer tyres
available
EU Tyre Label
EU Tyre Label
Roll resistance C 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.

(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 208602
(2)

Reifentest.com

just  108.63 £
available
Details
Fortuna Eco Plus UHP
Fortuna
Fortuna
Eco Plus UHP
225/40 R18 92Y XL

Tyre type

 Summer tyres
available
EU Tyre Label
EU Tyre Label
Roll resistance C Wet grip B Noise emissions 70 dB
just  101.63 £
available
Details
Kleber Krisalp HP 3
Kleber
Kleber
Krisalp HP 3
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 B Noise emissions 69 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 7493904
12.06.2020 from Ray Noble
Steering and wet road handling improved since replacing the standard tyre fitment.
21.05.2019 from Jane
I bought these as they rated well performing across the board. Not top in anything but above everything that was top in at least one area. The wet grip and braking is fantastic. Performed well throughout the cold months but we had no snow this year to test them. On warm dry roads the compound or pattern does not allow for an aggressive driving style but I never intended to keep them on in the summer so this was irrelevant to me. They make a noise like driving through standing water in the wet which is strange at first but I wouldn't say generally they were any noisier than my Eagle asymmetric 2 that they replaced. Did everything I expected from them and will be re fitting them come the winter.
21.03.2019 from McLovin
Not big enough to completely cover a horse's head
(10)

Reifentest.com

just  108.68 £
available
Details
Gripmax Suregrip Pro Winter
Gripmax
Suregrip Pro Winter
225/40 R18 92V XL

Tyre type

 Winter tyres
limited stock
EU Tyre Label
EU Tyre Label
Roll resistance D Wet grip C Noise emissions 72 dB
just  108.76 £
limited stock
Details
BF Goodrich g-Force Winter 2
BF Goodrich
BF Goodrich
g-Force Winter 2
225/40 R18 92W XL EV Suitable, with rim protectionleiste (FSL)

Tyre type

 Winter tyres
available
EU Tyre Label
EU Tyre Label
Roll resistance D Wet grip B Noise emissions 69 dB
just  109.21 £
available
Details
GT Radial WinterPro2 Sport
GT Radial
GT Radial
WinterPro2 Sport
225/40 R18 92V XL

Tyre type

 Winter tyres
limited stock
EU Tyre Label
EU Tyre Label
Roll resistance D Wet grip B Noise emissions 70 dB
just  109.21 £
limited stock
Details
Michelin E Primacy
Michelin
Michelin
E Primacy
225/40 R18 92Y XL EV Suitable

Tyre type

 Summer tyres
limited stock
EU Tyre Label
EU Tyre Label
Roll resistance A 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.

(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 742325
10.11.2022 from John Peters
Noted an increase in millage from tje start, also noticed a noise reduction while driving. Good grip and reduced roll. All in all a good upgrade for electric cars.
10.06.2021 from Anthony Hibbs
I bought these tyres as they are the only ones on the market that claim to be specifically designed for electric vehicles and are carbon neutral in their manufacture. Lots of claims made by Michelin regarding low noise levels, grip, wear and increased range. I can confirm that the tyres live up to these claims in all respects. I have driven around 1200 miles in mixed road and weather conditions and have been very impressed. My eGolf was always a quiet car, but now it’s almost silent with little or no road noise below 50mph. Braking and handling in wet or dry, good roads or bad, is exceptional. My average range previously was around 150 miles from a full charge, now it’s 160 miles, remarkable. I absolutely recommend these tyres for electric vehicles.
(2)

Reifentest.com

just  109.21 £
limited stock
Details
Giti GitiAllSeason AS2
Giti
GitiAllSeason AS2
225/40 R18 92Y XL, with rim protection (MFS)

Tyre type

 All-season tyres
available
EU Tyre Label
EU Tyre Label
Roll resistance C Wet grip A Noise emissions 72 dB
just  109.21 £
available
Details
Pirelli Powergy
Pirelli
Pirelli
Powergy
225/40 R18 92Y XL, 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.

(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 1029019
01.06.2022 from Felix
The loudest tires ever bought in 30 years... I went back to seller who recommended brand and model, he replied is road's fault... Now after just 2000km I am looking forward to wear them out, as these tires turned a very very quiet car (reason why I bough it) in a rumble of madness on the motorway where grainy asphalt is used for draining water... let me reiterate: the loudest tires ever bought in 30 years !! I am italian and was happy to buy an italian product... after this experience... no more Pirelli... EVER ! There are so many good brands out there. Pirelli if you read this review, I am available to sell back these tires to you immediately. A very unhappy customer.
07.01.2022 from Huggies
Was upgrading wheels so decided to get all new tyres aswell so picked tyres that were of a better make with good properties however they do slip easily on a wet road more than I had expected, give a comfortable ride considering the state of some roads seem to be wearing well although not done a large mileage on these so far, road noise is acceptable, all in all I would say they seem to be a decent tyre overall
(4)

Reifentest.com

just  109.45 £
limited stock
Details
Toyo Observe S944
Toyo
Toyo
Observe S944
225/40 R18 92W XL, with rim protectionleiste (FSL)

Tyre type

 Winter tyres
limited stock
EU Tyre Label
EU Tyre Label
Roll resistance D Wet grip B Noise emissions 71 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 1502496
22.01.2026 from Paun Karlos Nenestean
Amazing.....Thx.
(2)

Reifentest.com

just  109.72 £
limited stock
Details
There are 28 of 618 tyres displayed
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