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Radar Dimax R8 245/40 R18 100 Y RUN ON FLAT XL

This product is currently being viewed by 2 people


View all tyres 245/40 R18

Tyre size:
245/40 R18
Speed index:
Y = max 186 mph
Load index:
100 = max 800 kg
Vehicle type:
  • Free delivery
  • Delivery time: 2-3 working days

This product was last purchased yesterday at 05:52 PM

  • Availability:
    More than 12 in stock
    £ / pc. 94
    Rating: Good 111130 9 reviews
    E B 71 dB
    E B 71 dB
    More information
  1. SSL secure payments
  2. Fast and free delivery
  3. Brand-new,
    original products
  4. Over 2 million
  5. European sales

User reviews

Summary: 4.3 Summary: Overall rating is a weighted average of individual performance, not the arithmetic mean. Some of a tyre’s features have a greater impact on the overall assessment, while some will have a lesser impact. 9 reviews

  • Costs: Influence of the tyre on car running costs. 111110 4.1
  • Comfort: Influence of the tyre on driving comfort. 111110 4.1
  • Drivability: Influence of the tyre on drivability. 111140 4.4

9 customers have rated this tyre

  • 5 6 people
  • 4 0 people
  • 3 3 people
  • 2 0 people
  • 1 0 people

88% of users recommend this tyre


We have been collecting information about this tyre for 1929 days. In that time we have received 9 reviews.
The total distance driven by our customers is 95000 miles.

The highest rated parameter is: the grip on a dry surface.

This tyre was reviewed by users driving usually in the city.

This tyre was reviewed by drivers who assess their driving style as moderate.

Latest Reviews:

Reviews per page:

  • Opinion from outside the UK user: Stony

    Size: 225/50 R17

    Rating: 3.5 111500
    I used some premium class tyres but they got worn off quite fast as I use a vehicle a lot for the work purposes. I decided to try some budget class tyre and check if it will last for the similar time and it does. Radar Dimax R8 is a good choice for everyone who need to change tyres often.

    Is this review helpful? Yes 60 No 25

  • Daz

    Size: 245/40 R19

    Rating: 3.4 111400
    Very good budget tyre for the money wearing good i do loads of motorway miles and seem to be holding up

    Is this review helpful? Yes 0 No 0

  • Adam Taylor

    Size: 245/45 R18

    Rating: 5.0 11111
    Better than marked known brands and half the price.... Radar all the way for me going forward.

    Is this review helpful? Yes 3 No 3

  • Adam konik

    Size: 235/40 R18

    Rating: 2.8 118000
    Tires to crooked shakes all over the car, even when the wheel is balanced

    Is this review helpful? Yes 8 No 3

  • Martin bourbonneux

    Size: 225/60 R17

    Rating: 4.8 111180
    Nice tyres excellent service

    Is this review helpful? Yes 35 No 7

Reviews per page:

Product description

Radar Dimax R8 245/40 R18 100 Y RUN ON FLAT XL

Summer tyre for everyday use - Radar Dimax R8 is an example of a reliable tyre from the economical price segment. It meets the expectations of car owners who prefer a quiet driving style.


  • The asymmetric tread is designed for variable conditions and stable handling in both dry and wet conditions.

  • Drainage grooves effectively protect against aquaplaning, reducing the risk of slippage in rainy weather.

  • Even pressure distribution extends the life of tyres, which wear slowly and evenly.

  • The rubber compound is designed for high temperatures, so the model provides optimal performance in spring and summer.

logo Radar

Radar was established in 2006 as a brand specialising in the manufacture of economy class tyres. In its projects, it uses the knowledge and experience of world leaders in the tyre industry, thanks to which the company's offer is rich in modern solutions.

Radar Dimax R8 summer tyre is classified as economic tyre, which means that it provides the most favourable price and good performance.
Now, you are looking at the tyre with the size of 245/40 R18.
The tyre is currently available in sizes from 17 to 20 inches.
This tyre has a speed index of Y - the maximum speed at which you can drive on this tyre is 186 mph. The load index of this tyre is 100 - the maximum load that can be carried by the tyre is 800 kg.
The labelling of the tyre includes the following classes: E (rolling resistance), B (wet grip), 71 db (noise level).
The presented tyre has the following features:
  • a reinforced structure (it is more resistant to loads than the standard model)
  • RUN FLAT function (enables you to drive after air pressure loss)

Check other 18 inch tyres


The Radar Dimax R8 tyre in size 245/40 R18 100 Y, according to the manufacturer's information, has the following drivability qualities:

  • E
  • B
  • 71 dB
E B 71 dB

Fuel efficiency (rolling distance)

Fuel efficiency is rated from A to G on a colour-coded scale. The highest fuel efficiency rating is A (green; the lowest rolling resistance), while the lowest fuel efficiency rating is G (red; the highest rolling resistance). Rolling resistance influences fuel consumption and vehicle emissions; the lower the resistance, the lower the fuel consumption and exhaust fume emissions.

Wet grip

Wet grip is the tyre's ability to adhere to the road surface in wet conditions. The EU rating focuses only on the wet braking performance of the tyre. Wet grip is rated from A to G, where A represents the best braking performance and G represents the worst. It is one of the most crucial safety parameters.


Tyres contribute to the amount of noise a vehicle generates. Choosing a tyre with a good noise rating will lower the impact of your driving on the surrounding environment.