The Radar Dimax R8 plus is an economy Ultra High Performance summer tyre with mixed real-world feedback and weak independent test results. Owners often like its comfort, quietness, value and usable wet and dry grip in normal driving. However, test data highlights poor dry braking and low overall competitiveness, while some drivers report high-speed instability and vibration.
The quick answer
Owners say68%from 20 owner reviews60% would buy againRead the reviews
Built from every independent test result and vetted owner review we hold for this tyre - the evidence is all further down the page. Data updated September 2026.
Across the 3 wet-braking tests it has featured in, the Radar Dimax R8+ stops 12.1% longer than premium rivals, 4.7% longer than mid-range rivals and 7% shorter than budget rivals. It has a Tyre Reviews wet score of 61/100, and owners rate it 7.2/10 in the wet from 20 reviews.
How good is the Radar Dimax R8+ in the dry?
Across the 3 dry-braking tests it has featured in, the Radar Dimax R8+ stops 10.9% longer than premium rivals, 6.7% longer than mid-range rivals and 1.7% longer than budget rivals. It has a Tyre Reviews dry score of 26/100, and owners rate it 7.6/10 in the dry from 20 reviews.
How many miles does the Radar Dimax R8+ last?
Based on test and owner data, the Radar Dimax R8+ is expected to last around 27,300 miles (43,935 km).
What do owners say about the Radar Dimax R8+?
Across 20 owner ratings the Radar Dimax R8+ averages 68%. Owners rate Dry Grip highest at 7.6 out of 10 and Handling lowest at 6.3. 8 of those reviews come from owners past 10,000 miles. 50% of owners score it 70% or better.
What is the Radar Dimax R8+'s EU tyre label rating?
Across its range, the Radar Dimax R8+ most commonly carries EU label ratings of C for fuel efficiency, B for wet grip and 73 dB for noise.
More questions about the Radar Dimax R8+(5)
How comfortable and quiet are the Radar Dimax R8+?
Owners rate the Radar Dimax R8+ 6.7 out of 10 for comfort and noise across 18 reviews.
How well do the Radar Dimax R8+ wear, according to owners?
Owners rate the Radar Dimax R8+ 7.3 out of 10 for wear across 18 reviews. 8 of those reviews come from owners past 10,000 miles, and the typical review covers 2,000 miles.
Would owners buy the Radar Dimax R8+ again?
60% of owners say they would buy the Radar Dimax R8+ again, based on the 20 owner reviews that answered the question. 30% of them gave it the highest possible answer.
What does the Radar Dimax R8+ replace?
The Radar Dimax R8+ is the successor to the Radar Dimax R8 in Radar's range.
What sizes does the Radar Dimax R8+ come in?
The Radar Dimax R8+ is available in 98 sizes, ranging from 205-315/30-55 R17-24.
Drivers' experiences with the Radar Dimax R8 Plus are mixed. Many higher-scoring reviews praise its wet and dry grip, stability on long trips, quiet ride, and strong value, with several noting good tread life. However, a significant minority-mostly low-scoring reviews from performance/luxury car owners-report unsettling high-speed instability, floaty handling, and vibrations. Overall, it can perform well for everyday driving and touring, but may not suit more demanding performance applications.
What owners mention most counted across 18 reviews
Tap one to read only the reviews that mention it.
Owner ratings averaged from 20 ratings
Owner score68%
Dry Grip76%
Wear73%
Wet Grip72%
Comfort67%
Road Feedback65%
Handling63%
Featured reviews
Most helpful 18%
“These came on a BMW 140i I purchased from a dealer. They are not performance tyres, were absolutely lethal and made the car feel unsafe at anything above 100KPH. You felt like the car was a boat wallowing from side to...”
“Tires installed on rear were very unstable and would not track well in the rear. The car was wobbling and un-safe. The mercedes shop could not find anything wrong with the car after 3 hours of checking and test driving...”
“I haven’t had these tyres for very long only have them on the rear, but I find them very unstable and a little scary when changing lanes under acceleration and speed on a motorway or dual lane driving.The car seems very...”
These came on a BMW 140i I purchased from a dealer. They are not performance tyres, were absolutely lethal and made the car feel unsafe at anything above 100KPH. You felt like the car was a boat wallowing from side to side. They made me feel sick. Changing lanes was a frightening experience and they ruined the cars handling. They also caused the traction control light to flash and cut in on the lightest of bends. For anything with the remotest power buy proper tyres. These are not good.
Check out how the BEST all seasons tyres perform against premium summer and winter tyres!
These tyres fit performance cars but they are definitely NOT performance tyres. They may be ok for driving around town at 50kph but feel very unstable on a motorway, even in a straight line (feels more like driving a boat). Since fitting them the Dynamic Stability Control activates regularly (never did that with the Bridgestones) and the car feels very ‘floaty’ in corners - even at average speeds. Will be cutting my losses and going back to the Bridgestones sooner rather than later.
Which tyres do you drive?
Researching the Radar Dimax R8+? Rate the tyres you actually drive - and help the next buyer choose.
I haven’t had these tyres for very long only have them on the rear, but I find them very unstable and a little scary when changing lanes under acceleration and speed on a motorway or dual lane driving.The car seems very lose at the rear.As for everything else about the tyres seem ok so far.But I think I’ll have to replace them due to not feeling confident with the rear handling of the vehicle.
When I bought my 2018 Civic Type R, these were already installed as low profiles. I drove these tires through winter- WINTER. and they worked perfectly fine, even if they were low profiles. But I was grandma driving on winter. Now when I have the chance to make pulls, these tyres never let me down on the mountain curvy roads. 100% I am buying these tyres again, only thicker when I downsize my rims.
79%
Member
Jeep
265/50 R20
25,000 miles
Mostly Motorways
Average
Bought these tyres May 2021 for my Jeep Grand Cherokee did 38,000 km on on them, it’s now Dec 2023. Really quite tyre, ideal for those long hwy trips, grip, towing and handling were fine, no complaints, dirt gravel roads they were predictable in corners. I would have bought again if I could have got them. Great value for the money. I am interested to see if the Maxis HPM3’s will be as quiet.
For information, I am an experienced driver who drives according to the conditions, and can drive a bit over the speed limit if the roads and conditions are good. I have driven about 3000 km(1900miles) and am very satisfied. I have driven in torrential rain and not noticed any aquaplaning (max speed 80 km/h). The tires make a little more noise than previous tires I've had, but not disturbing to me. The sound from the tires was almost annoying at first, but after driving 1000-1500 km, the sound became weaker. I measured the tread depth when they were new, 8 mm. After driving about 3000 km, they are almost 7 mm (6.8 mm). I am very happy with that. Before i have Nexen Nblue HD Plus, and they were very quiet, but after about 7-8000 km there was only about 3.5 mm tread depth. Based on the fact that they are very cheap tires, I must say I am very satisfied! Drives only on asphalt roads.
Tires installed on rear were very unstable and would not track well in the rear. The car was wobbling and un-safe. The mercedes shop could not find anything wrong with the car after 3 hours of checking and test driving. And looking for suspension or steering issues. It was recommended that i change the tires to see what happens .
Had to finally replace the tires with P-Zeros which instantly changed the behavior of the car and made it stable as before the The Radar R8plus
Very very disappointed - these do not work for luxury performance cars. I checked and others have had similar experiences on A7.
I would never buy again.
I am returning them and hope they don't give me the runaround.
Do not recommend these tires if you are looking for high mileage usage. My Radar Dimax R8 tires only lasted 14K and started coming a part on the inside, couldn't believe it until they were taken off the vehicle for rebalance, because of bad vibration and discovered tire was coming apart.
I have purchased these tyres one year ago and did over 13000 miles on them. I can now say they are in the mid of their life. I purchased two sizes: 245/40/20 front and 275/35/20 rear. I am very satisfied with them in any weather condition. I feel safe with them. I am not a slow driver- I'm a dynamic driver. I can recommend them with my honest opinion.
Negatives - not so deep rim protection.
So I just had all four tyres (Bridgestone Dueler HP Sport) changed and I went with budget Radar Dimax R8+(DOT 1619).
This is an initial review of their performance which mind you is based on a 2.5 mile drive in the wet.
Dry Grip: Can't write on this yet as I am yet to drive in the dry.
Wet Grip: I was actually impressed by the grip in the wet - they seemed to respond quicker with about same stopping distance to my previous tyres which were rated C for wet (and down to 1.3mm trea depth).
Road Feedback: was definitely milder compared to my previous, bumps didn't get feel as crude as before (maybe the "well-inflatedness" of the new ones factored into this).
Handling: There was a certain sponginess to how they felt,accelerating seemed a little laggy but taking corners felt slightly better and there was no skidding.
Wear: can't say much on ths as they are brand new - came with full 7mm tread depth, I'll see how wear goes - fingers crossed.
Comfort: I usually drive with suspension set to comfort(else the mrs throws-up everywhere) but I did feel a slight but noticeable increase in comfort level.
Buy again: Only time will tell!
Looks: I like the tread pattern - with the reassuring 4 main groves present, not a big-fan of the checquered finish on the sidewall and they look a little pale too (will have to get them darkened somehow).
Conclusion: So far so good, I have an eighty-mile roundtrip coming up, hopefully that will give more positive insight.
