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Davanti DX640 View Gallery (2)
205-315/30-65 R16-22 145 sizes

Davanti DX640

The Davanti DX640 is a High Performance Summer tire designed to be fitted to Passenger Cars.

7.0
Tire Reviews Score Based on User Reviews
Limited Confidence View Breakdown
Dry Grip
79%
Wet Grip
71%
Road Feedback
74%
Handling
72%
Wear
65%
Comfort
77%
Buy again
66%
100 Reviews
72% Average
847,109 miles driven
Davanti DX640

Davanti DX640

Summer Economy
BETA
7 / 10
Based on User Reviews · Limited Confidence · Updated 23 Feb 2026

The Tire Reviews Score is the most comprehensive tire scoring system available. It aggregates professional test data from multiple independent publications, user reviews, and consistency analysis using Bayesian statistical methods, weighted normalisation, and recency-adjusted scoring to produce a single, reliable performance rating.

Learn more about our methodology
Score Components
Professional Tests
Weight: 80%
Tests: 0
Publications: 0
User Reviews
Weight: 15%
Reviews: 100
Avg Rating: 72%
Min Required: 5
Consistency
Weight: 5%
Score Std Dev: 0.19
History Points: 10
Methodology & Configuration
Scoring Process
  1. Collect Test Data: Gather results from professional tire tests across multiple publications. Minimum 1 test(s) required.
  2. Normalize Positions: Convert test positions to percentile scores using exponential weighting (factor: 1.2).
  3. Apply Recency Weighting: More recent tests are weighted higher with a decay rate of 0.95.
  4. Incorporate User Reviews: Factor in user review data (minimum 5 reviews). Weight: 15%.
  5. Bayesian Smoothing: Apply Bayesian prior (score: 7, weight: 1.5) to prevent extreme scores with limited data.
  6. Calculate Final Score: Combine all components using normalization factor of 1.1. Max score with limited data: 9.5.
Component Weights
Test Data
80%
User Reviews
15%
Consistency
5%
All Configuration Parameters
ParameterValueDescription
safety_weight 0.7 Weight multiplier for safety-related metrics
performance_weight 0.55 Weight multiplier for performance metrics
comfort_weight 0.4 Weight multiplier for comfort metrics
value_weight 0.45 Weight multiplier for value-for-money metrics
user_reviews_weight 0.15 How much user reviews contribute to the final score
test_data_weight 0.8 How much professional test data contributes to the final score
consistency_weight 0.05 How much score consistency contributes to the final score
recency_decay_rate 0.95 Rate at which older test results lose influence (higher = slower decay)
min_test_count 1 Minimum number of professional tests required
min_review_count 5 Minimum number of user reviews required
score_version 1.9 Current version of the scoring algorithm
score_normalization_factor 1.1 Factor used to normalize raw scores to the 0-10 scale
confidence_factor_weight 0.2 How much data confidence affects the final score
position_penalty_weight 0.2 Penalty applied for poor test positions
gap_penalty_threshold 12 Score gap (%) that triggers additional penalties
min_metrics_count 2 Minimum number of test metrics needed per test
limited_data_threshold 2 Number of tests below which data is considered limited
single_test_penalty 0.75 Score multiplier when only one test is available
critical_metric_penalty 0.7 Penalty for poor performance on critical safety metrics
critical_metric_threshold 70 Score below which a critical metric penalty applies
position_exponential_factor 1.2 Exponent used to amplify position-based scoring
position_exponential_threshold 0.9 Position percentile below which exponential scoring applies
gap_multiplier_critical 3 Multiplier for critical gap penalties
max_category_weight 2 Maximum weight any single category can have
max_score_limited_data 9.5 Score cap when data is limited
bayesian_prior_weight 1.5 Weight of the Bayesian prior in smoothing
bayesian_prior_score 7 Prior score used for Bayesian smoothing
evidence_test_multiplier 1.9 Multiplier for test evidence in confidence calculation
evidence_metric_divisor 3 Divisor for metric count in evidence calculation
evidence_review_divisor 10 Divisor for review count in evidence calculation
combined_penalty_floor 0.2
All Tests

Sorry, we don't currently have any magazine tire tests for the Davanti DX640

Size Fuel Wet Noise
17 inch
215/55R17 94 V C B 68
215/55R17 94 V C B 68
215/55R17 98 W XL C B 68
225/45R17 94 W XL C A 68
215/55R17 98 W XL C B 68
225/45R17 94 W XL C A 68
215/45R17 91 Y XL B B 68
225/50R17 98 Y XL C B 68
225/45R17 91 W D B 70
225/45R17 94 Y XL C A 68
215/45R17 91 Y XL B B 68
225/50R17 98 Y XL C B 68
225/45R17 91 W D B 70
225/45R17 94 Y XL C A 68
205/50R17 93 W XL C B 68
215/45R17 91 W XL C B 68
205/50R17 93 W XL C B 68
215/45R17 91 W XL C B 68
18 inch
245/40R18 97 Y XL B B 68
255/35R18 94 W XL C B 70
225/40R18 92 W XL C B 68
245/40R18 97 Y XL B B 68
255/35R18 94 W XL C B 70
225/40R18 92 W XL C B 68
225/40R18 92 Y XL B B 68
245/45R18 100 W XL B B 68
225/40R18 92 Y XL B B 68
245/45R18 100 W XL B B 68
245/45R18 100 Y XL B B 68
255/35R18 94 Y XL C B 70
245/45R18 100 Y XL B B 68
255/35R18 94 Y XL C B 70
19 inch
235/35R19 91 Y XL B B 68
235/35R19 91 W XL B B 68
235/35R19 91 Y XL B B 68
235/35R19 91 W XL B B 68
20 inch
255/45R20 105 V XL B B 70
255/45R20 105 V XL B B 70
245/35R20 95 W XL B B 68
245/35R20 95 W XL B B 68
255/45R20 101 W C B 70
View All Sizes and EU Label Scores for the Davanti DX640 >>

Questions and Answers for the Davanti DX640

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May 16, 2019

I am considering changing my tires to a set of Davanti DX 640 the designated size for the rear set for my BMW 7series is 275/35/20 can I fit 275/40/20??

Sorry I'm unable to comment on specific fitment changes. Check out an owners club or speak directly to BMW.
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Review Summary

Based on 99 user reviews

Most drivers find the Davanti DX640 quiet, comfortable, and offering solid dry and respectable wet grip for the price, with several high-scoring reviews praising confidence and value versus premium brands. However, a sizable minority report serious wet grip deterioration as tread wears, rapid wear on heavier/spirited applications, and occasional instability/balancing complaints. Overall sentiment is mixed-positive but polarized.

Strengths
  • Low noise
  • Comfort/ride quality
  • Good dry grip
  • Acceptable wet grip when new
  • Value for money
  • Straight-line stability/feedback
Areas for Improvement
  • Poor wet grip for some users (especially as tread wears)
  • Fast tread wear on heavier or driven-hard vehicles
  • High-speed instability/balancing issues

Top 3 Davanti DX640 Reviews

Given 41% while driving a Ford Focus (215/50 R17) on for 0 miles
Tire needed replacing after a few thousand miles, never again. And they're no cheaper than much more trust worthy brands. Support useless if not rude
March 5, 2025
Given 94% while driving a Toyota TOYOTA RACTIS 1.5 (205/45 R17) on mostly country roads for 10,000 average miles
Very positively impressed with this tire - I fitted a set on my Subaru Legacy about two years ago - which was previously fitted with NOKIAN which is a premium brand. Wet/dry grip was identical, and comfort was improved. Cannot complain in the least! Excellent performance.

Now I have fitted a second set to my Toyota. Again, excellent grip, wet or dry, but most of all much improved comfort over the Nexen tires it had fitted. So I can truly recommend these tires for both value and performance.
January 10, 2025
Given 36% while driving a Audi A5 2.0TFSI Quattro (255/35 R19) on mostly motorways for 4,000 spirited miles
Bad under wet braking, had to do an emergency brake and the car veered to the side, never had that happen before. Do not feel confident in the wet with these. Dont buy, they were already fitted to my car when I got it.
January 3, 2025

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Latest Davanti DX640 Reviews

Given 47% while driving a Hyundai i40 tourer (215/50 R17) on a combination of roads for 6,700 miles
Very uninspiring, average handling in dry condition, becomes very unstable above 55/60mph. Does not inspire confidence in the wet, definitely would not push on with these tires. Very noisy with average fuel consumption. Would not fit again.
August 31, 2025
Given 91% while driving a Peugeot 508 SALOON (215/55 R17) on a combination of roads for 0 average miles
They work very well, they are very precise and have a very good grip.
January 16, 2025
Given 81% while driving a Renault KWID 2020 1.0 Dynamique (165/70 R14) on a combination of roads for 90 spirited miles
Bought a set of 4 for my Renault Kwid 2020 1.0 Dynamique, was skeptical at first as they are cheaper than most brands. I bought them in April 2022, and now I will be buying a new set November 2024 they have well over 90,000km on them with little bit more than 1mm left, they still handle well on the road (Wet & Dry), however, they have become a little bit more slippery when driving over a puddle on the side of the road, they handle really well on a dirt road as I can drive up to 70km/h without sliding (it's not a level road it has lots of bumps and rocks sticking out), the cars glides over potholes in the road. Very impressed, will be fitting a new set today.
November 29, 2024
Given 53% while driving a Skoda (225/45 R17) on mostly town for 15,000 easy going miles
Only got 18 months out of these tires with normal round town driving.
March 16, 2024
Given 93% while driving a Peugeot (205/40 R17) on mostly country roads for 20 spirited miles
I'd never heard of Davanti tires before buying a set of DX640's on an alloy wheel and tire package 3 years ago.
I've owned my peugeot 206 2 litre diesel for 15 years and over that time I've tried just about every make of tire including Continentals, Michelins, Yokohamas, Firestones Bridgestones, Nankangs and even BCT's. As expected, they all had their good and bad points but to be honest the car is a nose heavy little lump that eats front tires for laughs regardless of being continuously fed new wishbones and track rod ends with the tracking always checked and adjusted following any changes but I can quite honestly say these Davanti's are the only tire that has not only lasted more than two years on the front but are also wearing evenly which is something none of the others ever managed. When they do eventually wear out,I will definitely buy another set as I've been pleasantly surprised with their performance.
January 1, 2024
Given 90% while driving a Audi S6 (255/35 R20) on mostly country roads for 18,000 average miles
When I purchased this car it had brand Davanti tires fitted to to the front with partially worn Pirelli tires on the rear. As I'm not a fan of mismatched tires I purchased a pair of Davanti for the rear. In the past I have used many brands of tires and found the Davanti comparable with most of the in their handling, wet and dry grip. They are quiet on the motorway, the road feedback is excellent and they are cheaper than most. I have been thoroughly impressed with them.
That said, the fronts are now down to just over 4mm of tread with just over 6mm at the rear. The fronts no longer inspire confidence and the wet handling has deteriorated. The front tires possible have a bit more life in them but I will be changing them in the next week. Liked these tires but less impressive when they get down to 4mm or so but would certainly purchase again.
October 19, 2023
Given 50% while driving a Jaguar XJ8 (255/40 R19) on mostly town for 15,000 average miles
Dangerous! OK for wear and handling, had a pair of DX640 (255/40/R19) on the front of a Jaguar XJ V8 - first one started losing pressure as if it had a slow puncture - when I took it off to try and find the leak it was much worse - the entire sidewall had split away from the shoulder! The other side was fine and not losing pressure, but a few months on while working on the brakes I noticed the other tire is goosed too - massive split between the shoulder and the tread revealing lots of sheared steel wires and cords from the belts! 15k miles and barely 3 years on the car, less on the first one, both with a good 4mm of tread left. Never again!
October 15, 2023
Given 49% while driving a BMW M140i F20 (225/40 R18) on a combination of roads for 3,000 spirited miles
I bought my car with these tires. 225/40/18 front 245/35/18 rear. They were new, installed by the previous owner before selling the car. For shopping, commuting to work or short trips close to home, these tires are good. The problem begins when we want to go on a long trip on the motorway. After exceeding 60 miles per hour, the car jumps left and right on the road and a vibration can be felt in the steering wheel. It's impossible to balance these tires correctly. I am afraid to drive on the motorway because the car is completely unpredictable and drives as it wants. I can't imagine driving in heavy rain with these tires. The car is fast, it has 340 horsepower, and these poor tires make it no fun to drive. I do not recommend these tires.
September 27, 2023
Given 39% while driving a BMW Z4 Coupe (225/35 R19) on a combination of roads for 500 easy going miles
These tires would appear to be made from cheese and not cheddar, the soft kind like Feta. The merest hint of a curb and large chunks fall off the side wall. I will have to replace the two front tires after 6 months and 700 miles to get the car through MOT. The previous tires were on the car 8 years so it’s not the drive, my wife who’s not a brilliant driver to be honest, but the previous tires stuck around for 8 years so I’m pretty sure I won’t be buying Devanti tires any time soon. Appalling bad tires.
September 18, 2023
Given 30% while driving a Ford Transit Connect (225/45 R17) on mostly town for 6,000 easy going miles
Rubbish they have perished...big ridge around the tire air coming out. And whoever thought of putting white rubber under the black? It rubs off and leaves them looking awful. I would never buy again
July 31, 2023
Given 41% while driving a Renault (225/45 R18) on mostly country roads for 1,000 spirited miles
So these tires were on my car when I bought it ... unfortunately they were almost new. Why unfortunately ? Well my car is a Renault Laguna GT with 4-wheel steer and its the third one of this spec I've had .... it just 'fits' me and actually, with the right tires, it's a really enjoyable drive, especially on the back roads round here. I've had a few different tire types on these cars and ended-up on Michelin Pilot 4s so when I tried driving the same on these Davantis, I rapidly realised I was going to end-up in a ditch if I wasn't careful. Although they're perfectly acceptable in a straight line ... oh, no ... not round corners .... you can feel the sidewalls just giving way and the whole car just wanting to wander sideways - not a nice feeling at all ! Like I said .... unfortunately they were almost new and this stupidly influenced my decision to stick with them until they needed replacement. A few weeks was enough ... I mean ... I'd had enough of no longer enjoying driving a car I was very familiar with and wondering if I'd purchased an, admittedly low-mileage, lemon. To be honest the Michelins were never that great in the wet, but after a long dry spell, slippery roads from the first rain on these tires had me driving like an old man with a hat. So I bit the bullet and decided to try some Goodyears for a change .... thank you God !!!! No, it wasn't the car ... it was the tires. I'm sure that if all you're interested-in is getting the car through the MOT and driving to the shops or up-and-down a nice straight motorway, they're perfectly fine ... but if you actually want to DRIVE ... dont bother with this tire ... it's just not up to it.
July 16, 2023
Given 30% while driving a Audi A6 3.0 TDI Quattro (255/40 R19) on a combination of roads for 1,000 spirited miles
I’ve these on my 3.0 Audi A6 Quattro. They aren’t an uncomfortable tire, so to speak, but they leave a lot to be desired if you’re even a modestly spirited driver. The traction control on my Audi is very aggressive, so much so that if I’m having a play, I disable it. I’ve lost traction several times in low speed but high sidewall force scenarios. These trees just don’t hold up to any lateral force at all. Unless you’re dithering about, they will throw your car all over the road in a wallow. I can’t speak to how long they last, nor how they are in the wet. I’ve done a thousand miles on mine and I’m ready to swap them out for just about anything. The biggest issue is the way they respond under braking. They just don’t. They slip and slide all over the place under intense braking. Are they okay for doing the weekly shop? Yes. Are they okay for dithering about, doing the school run, and doing 60mph in the outside lane? Probably. Are they any good if you like to use more than 30 percent of your available throttle sometimes? No. I didn’t choose to fit them. They were fitted merely to get through an MoT by the previous owner.
April 22, 2023
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