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Radar Dimax R8+
255/45 R18 Y (103)

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Product description & features

  • Precise handling at high speeds
  • Available as run flat
  • Suited for both passenger cars and SUVs

This high performance tyre is optimised for high speeds, giving motorists excellent grip and both wet and dry conditions.

The Dimax R8+ is also suitable for EVs, with EV compatible size variants featuring a special low rolling resistance compound.

The Radar Dimax R8+ is available in 17-inch to 23-inch rim sized tyres.

Great Handling at High Speeds

An asymmetric tread design features advanced silica formulated tread compound technology, enhancing the tyre’s high performance capabilities.

This helps improve handling and steering responsiveness at higher speeds.

Strong Wet Grip Performance

An optimised tread compound along with four wide longitudinal grooves gives the tyre an enhanced wet grip performance.

This is through the work of the compound and grooves that both contribute to effective water drainage, making the tyre more stable in wet conditions.

Dimax R8+ Tyre Variants

The Radar Dimax R8+ is currently manufactured in 2 variants of tyre:

  • Passenger car tyres
  • 4x4/SUV tyres

Please note: before you select your tyres, ensure that the tyre size that you intend to order are the correct variant and matches your vehicle type.

The Radar Dimax R8+ - 255/45 R18 Y is a summer tyre.

Radar Dimax R8+ - 255/45 R18 Y Reviews

Tyre review data syndicated to retailer from DriverReviews and accredited by Afnor

Ratings & Reviews

There are
1928
reviews of the Radar Dimax R8+

1928
total ratings, with
725
review comments
Overall rating
4.5/5

Tyre review for Radar Dimax R8+ 245/40 R19 Y

  • Car make: Mercedes-Benz
  • Car model: E-Class
  • 5 Stars
  • Reviewed on: 06/11/2026
  • Purchased on: 31/10/2025
  • Approx. miles driven: 11,500
Can't complain for the money - Very good so far very happy with the quality and price of the tyre . I have bought premium tyres before and sometimes I just don't think they are worth it

Tyre review for Radar Dimax R8+ 235/45 R19 V

  • Car make: Mercedes-Benz
  • Car model: GLA-Class
  • 5 Stars
  • Reviewed on: 03/11/2026
  • Purchased on: 13/05/2026
  • Approx. miles driven: 1,500
Great value and perfect for my driving habits! My tyres are performing exactly as they are supposed to. When looking for replacements, I was advised that I didn't need to splurge on expensive premium brands because I don't drive thousands of miles per year. That advice was spot on. These tyres get the job done perfectly without breaking the bank, and I will definitely buy them again.

Tyre review for Radar Dimax R8+ 225/35 R18 Y

  • Car make: Vauxhall
  • Car model: ADAM
  • 5 Stars
  • Reviewed on: 26/10/2026
  • Purchased on: 31/07/2026
  • Approx. miles driven: 800
They are just what I needed.

Tyre review for Radar Dimax R8+ 255/35 R21 Y

  • Car make: Audi
  • Car model: RS Q3
  • 5 Stars
  • Reviewed on: 16/10/2026
  • Purchased on: 17/07/2026
  • Approx. miles driven: 1,500
They appear to be working well, noise levels good, haven't really much time driving in the wet, but confident grip will be good.

Tyre review for Radar Dimax R8+ 225/45 R18 Y

  • Car make: BMW
  • Car model: 2 Series
  • 5 Stars
  • Reviewed on: 10/10/2026
  • Purchased on: 10/07/2026
  • Approx. miles driven: 4,000
Grip really well even in the wet. Wearing better than the bridgstones I last had on the car. Covered about 6000 miles since they were changed and doesn't really look like they've worn.

Tyre review for Radar Dimax R8+ 255/40 R21 Y

  • Car make: Audi
  • Car model: Q5
  • 5 Stars
  • Reviewed on: 09/10/2026
  • Purchased on: 17/07/2026
  • Approx. miles driven: 2,000
Good tyres; reliable great price.

Tyre review for Radar Dimax R8+ 245/35 R18 Y

  • Car make: BMW
  • Car model: 2 Series
  • 4 Stars
  • Reviewed on: 07/10/2026
  • Purchased on: 14/07/2026
  • Approx. miles driven: 800
Not to bad as yet seem okay

Tyre review for Radar Dimax R8+ 255/35 R19 Y

  • Car make: Mercedes-Benz
  • Car model: C-Class
  • 5 Stars
  • Reviewed on: 06/10/2026
  • Purchased on: 22/04/2026
  • Approx. miles driven: 3,500
Great no complaints, great value for money

Tyre review for Radar Dimax R8+ 245/40 R19 Y

  • Car make: BMW
  • Car model: 5 Series
  • 5 Stars
  • Reviewed on: 03/10/2026
  • Purchased on: 11/07/2026
  • Approx. miles driven: 1,000
Pleased with the performance of tyres

Tyre review for Radar Dimax R8+ 255/30 R19 Y

  • Car make: BMW
  • Car model: 3 Series
  • 5 Stars
  • Reviewed on: 02/10/2026
  • Purchased on: 10/07/2026
  • Approx. miles driven: 2,000
Very well. I'm very happy with my purchase

Tyre review for Radar Dimax R8+ 205/40 R18 Y

  • Car make: MINI
  • Car model: Cooper
  • 5 Stars
  • Reviewed on: 01/10/2026
  • Purchased on: 09/07/2026
  • Approx. miles driven: 800
I have been very happy with these tyres I had pirellis on before and they tended to bulge frequently after going.over pot holes. Not had this problem so far with this brand.

Tyre review for Radar Dimax R8+ 275/40 R18 Y

  • Car make: BMW
  • Car model: 5 Series
  • 5 Stars
  • Reviewed on: 25/09/2026
  • Purchased on: 18/09/2025
  • Approx. miles driven: 10,500
Brilliant and would definitely buy again. - Very good abd very economical brand of tyres

Tyre review for Radar Dimax R8+ 225/45 R19 W

  • Car make: Skoda
  • Car model: Karoq
  • 4 Stars
  • Reviewed on: 18/09/2026
  • Purchased on: 13/04/2026
  • Approx. miles driven: 4,000
Good performance but in wet conditions not always good grip on roundabout

Tyre review for Radar Dimax R8+ 225/40 R19 Y

  • Car make: BMW
  • Car model: 4 Series
  • 4 Stars
  • Reviewed on: 17/09/2026
  • Purchased on: 25/06/2026
  • Approx. miles driven: 1,000
Performing well Handling well

Tyre review for Radar Dimax R8+ 255/35 R21 Y

  • Car make: Audi
  • Car model: RS Q3
  • 4 Stars
  • Reviewed on: 17/09/2026
  • Purchased on: 17/06/2026
  • Approx. miles driven: 2,000
I’m really impressed with these tyres especially the price virtually half price of the big names. I must admit I haven’t done much driving in the rain or bad weather yet!

Tyre review for Radar Dimax R8+ 205/40 R18 Y

  • Car make: MINI
  • Car model: Cooper
  • 5 Stars
  • Reviewed on: 16/09/2026
  • Purchased on: 03/09/2025
  • Approx. miles driven: 11,500
All areas of performance for my style of driving equal far more expensive tyres. Very pleased with the tyres. - I’m impressed with the apparent lack of wear, whilst feeling very good to drive on.

Tyre review for Radar Dimax R8+ 225/40 R18 Y

  • Car make: BMW
  • Car model: 1 Series
  • 5 Stars
  • Reviewed on: 13/09/2026
  • Purchased on: 20/06/2026
  • Approx. miles driven: 200
Normal drive performance just the same as expensive tyres. Seem OK in wet. Hard driving the lack a little grip. Seem to be value for money.

Tyre review for Radar Dimax R8+ 225/45 R18 Y

  • Car make: BMW
  • Car model: 3 Series
  • 5 Stars
  • Reviewed on: 12/09/2026
  • Purchased on: 10/07/2025
  • Approx. miles driven: 4,000
As expected, MPG around the same as originals, braking and cornering around the same too, but I don’t corner fast and try and avoid braking hard!

Tyre review for Radar Dimax R8+ 235/40 R19 Y

  • Car make: Peugeot
  • Car model: RCZ
  • 3 Stars
  • Reviewed on: 12/09/2026
  • Purchased on: 19/06/2026
  • Approx. miles driven: 1,000
Good grip in wet and dry but the rude quality is a lot worse than my previous tyres

Tyre review for Radar Dimax R8+ 225/45 R17 Y

  • Car make: BMW
  • Car model: 3 Series
  • 5 Stars
  • Reviewed on: 11/09/2026
  • Purchased on: 19/06/2026
  • Approx. miles driven: 2,000
Really good tyre with rim protector, netter grip in wet than the OEM Bridgestone IMHO.
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