About Us

Prüfengel offers authentic consumer tests in which real users share their experiences with products. Our tests are based on practical applications in everyday life and reflect the opinions of consumers. As we focus on consumer tests, we do not carry out material, long-term or laboratory tests. Our aim is to provide honest feedback to help you make a purchasing decision. For a detailed insight into our comprehensive evaluation process, which forms the basis of all our product reviews, please click here.

Dunlop
bike lock

The Dunlop bike lock offers a high level of security for bicycles, e-bikes and scooters. With a security level of 8 and a length of 100 cm, this lock is ideal for protecting your bike against theft. The chain is made of hardened steel with 6 mm thick links, making it very difficult for thieves to cut through the lock.
A special feature of this lock is the 5-digit numerical code, which allows 100,000 different combinations. Compared to conventional 4-digit locks, this offers significantly higher security. The numbers are easy to set and are also easy for children to use.
The chain is covered with a special fabric tape that is UV-resistant and protects your bike from scratches. The coating also ensures that your hands remain clean when using the lock.
The lock is not only robust and secure, but also practical to use. It can be easily wrapped around the seat post with three turns without interfering with pedalling. With a weight of 840 grams, it is light enough to be easily transported.
All in all, the Dunlop bike lock offers an excellent combination of security, ease of use and protection for your bike. It is a reliable choice for anyone who wants to effectively protect their bike against theft.

  • 100cm length
  • 5-digit numerical code
  • UV-resistant coating
  • Font size in the instructions very small

The test

General information

We took a close look at the product and tested it in practice. In the following, we take a closer look at the features and impressions. From the packaging, materials and quality to the range of functions and handling, the product is subjected to our test procedure.

To give you a quick overview, we work with a points system. The maximum achievable score per area is 100 points. The final overall score is calculated from the average of all tested features, taking into account the respective weighting. For a detailed insight into our comprehensive evaluation process, which forms the basis of all our product ratings, please click here.

The first impression

Packaging and contents

Here we take a closer look at packaging. Sustainability is becoming an increasingly important factor. In addition, adequate protection of the product must of course also be guaranteed. Are the contents of the packaging complete and does the manufacturer make it as easy as possible for me to use the product straight away?

Product protection

Carton is sturdy, product sufficiently protected

100

Points

Sustainability Packaging

Unnecessary packaging waste has been avoided, the plastic film protects the product components

100

Points

Package contents & scope

Complete

100

Points

Instructions for use

Product is self-explanatory

100

Points

TOTAL

100

Points

Weighting: 20%
*Themaximum score is 100 points

The first impression of the Dunlop bike lock is predominantly positive, particularly with regard to the packaging and contents. The lock is packed securely and compactly, which gives a feeling of quality and reliability as soon as you unpack it.
The packaging itself is robust and attractive and contains clear information about the security features and handling of the lock. The packaging is not excessively large, which makes it more environmentally friendly.
When you open the packaging, you will find the lock well protected and in perfect condition. The numerical code is already preset and easy-to-understand but too small printed instructions for changing the code are included.
The high-quality workmanship and the solid weight of the lock leave a good impression and convey security and durability.
Overall, the first impressions of the packaging and contents are very satisfactory and strengthen confidence in the product and the Dunlop brand.

The first time in your hand

Product processing and appearance

Before we start the practical test, we take a close look at the workmanship of the products. How high quality are the materials used? Are the look and feel satisfactory?

Visual appearance

Attractive design

100

Points

Processing

Very good workmanship

100

Points

Stability

Very stable

100

Points

Sustainability of the product

No details, but use of high-quality materials

80

Points

TOTAL

95

Points

Weighting: 20%
*Themaximum score is 100 points

The Dunlop bike lock is particularly impressive in terms of its workmanship and appearance. The chain is made of hardened steel, which gives it a solid and trustworthy feel. The links are evenly and cleanly processed, which indicates a high manufacturing quality.
The lock itself is perceived as stable and durable. The numerical code mechanism works smoothly and is easy to set. The numbers are easy to read and the mechanism engages precisely.
Visually, the lock impresses with its simple but elegant design in black. The chain coating is not only functional to prevent scratches on the bike, but also gives the lock an attractive appearance. The black colour goes well with most bikes and e-bikes and makes the lock inconspicuous and stylish.
To summarise, we are very pleased with the finish and appearance of the Dunlop bike lock. It makes a high-quality impression both visually and haptically and fulfils the expectations of a secure and durable bike lock.

This is what our practical test showed

Does the manufacturer keep its advertising promises?

Our practical test has the highest relevance and therefore weighting. Here, the product has to undergo a wide range of criteria and tests. We check the functions and product promises of the test article.

Mechanical strength

Slight scratches or dents, but functional

90

Points

Weather resistance

No corrosion or malfunctions after the tests

100

Points

Simple operation of the numerical code

Number combination very easy to operate, mechanism works perfectly under all conditions

100

Points

Ergonomic handling

Mechanism very smooth-running, operation in poor lighting conditions possible without any problems

100

Points

Compatibility with various bikes and mounting options

Fits easily on a wide variety of bikes and mounting options

100

Points

TOTAL

98

Points

Weighting: 45%
*Themaximum score is 100 points

The Dunlop bike lock is rated as a product that largely delivers what it promises. The high level of security, which is given a rating of 8, is confirmed by the robust workmanship and the use of hardened steel.
The 5-digit numerical code advertised as a special security feature also fulfils expectations. The length of 100 cm is also sufficient to securely connect the bike to fixed objects. The chain coating protects the bike from scratches and ensures that the lock still looks good even after prolonged use.
The product also lives up to its promise in terms of user-friendliness and design. The combination of functionality and aesthetics is positively emphasised.
To summarise, it can be said that the Dunlop bike lock fulfils the manufacturer’s advertising promises. It offers a high level of security, is user-friendly and impresses with its high-quality workmanship and attractive design.

Test plan of the Prüfengel Institute

You can find a detailed insight into the evaluation criteria of the practical part of the test and the distribution of points here. If you are also interested in the evaluation of our other test criteria, please read our document on the evaluation process.

Price/performance ratio

and ratings from consumers

Finally, we analyse how the product compares to the competition. Can it keep up with the competition in terms of price and quality? Would we generally recommend buying it? We also look at the consumer reviews and check whether the critical and positive reviews are actually justified.

Price / performance ratio

Very good performance in the lower price segment

90

Points

Rating cut

4.5 out of 5.0 on Amazon

75

Points

TOTAL

83

Points

Weighting: 15%
*Themaximum score is 100 points

On the Amazon platform, consumers rate the product with an average of 4.5 stars. In individual cases, there is criticism that the combination lock can stop working properly after a short time. On the other hand, the price of the chain, the good length and the easy handling of the combination lock are positively emphasised. In our practical test, we were able to confirm that the solid quality and functional combination lock of the product is well received by customers. Based on the tests, we cannot confirm the criticism levelled by consumers at the combination lock of the bike lock.

Prices of up to €89.20 are charged on the Internet for equivalent products. Very cheap products are available from as little as €7.99 . The Dunlop bike lock is therefore currently in the lower price segment with a price of €19.99. For the quality and performance received, the price-performance ratio is very good.

Overall result

1. packaging & contents

20%

100

Points

2. product processing & appearance

20%

95

Points

3. in the practical test

45%

98

Points

4. price/performance & consumer reviews

15%

83

Points

TOTAL

96

Points

*Themaximum score is 100 points

bike lock
of the brand
Dunlop
was rated with an overall score of
1,2
and thus successfully qualified for our test seal. The test was carried out during the test period
10/24
and is stored in our database under the licence number
240903010
. Further information on our test procedure can be found at www.pruefengel.de/testverfahren.
bike lock
of the brand
Dunlop
achieved
96
Points in our test and therefore passed. The test was carried out in the test period
10/24
and is stored in our database under the licence number
240903010
. Further information on our test procedure can be found at www.pruefengel.de/testverfahren.

The practical tests are based on careful observations and do not include long-term or laboratory tests. The test judgements reflect the personal impressions and opinions of the testers who try out the products in everyday use. We would like to emphasise that these evaluations do not claim to be exhaustive and may reflect both subjective and objective impressions. The evaluations are made to the best of our knowledge and belief, without any liability being assumed for the accuracy or completeness of the test results. It is important to note that our tests are not based on legal requirements, medical effects or specific ingredients of the products. We rely on the advertising claims and information provided by the manufacturers, but use of the information is always at your own risk. Our efforts are aimed at ensuring a serious and thorough testing procedure, which has been developed in a long and professional process in close co-operation with our testers.

The practical tests are based on careful observation and do not include long-term or laboratory tests. The test ratings reflect the opinion of our experts and are based on careful analysis. We would like to emphasize that these evaluations do not claim to be exhaustive and reflect both subjective and objective impressions. The assessments are made to the best of our knowledge and belief, without any liability being assumed for the accuracy or completeness of the test results. It is important to note that our tests are not based on legal requirements, medical effects or specific ingredients of the products. We rely on the advertising claims and information provided by the manufacturers, but use of the information is always at your own risk. Our efforts are aimed at ensuring a reputable and thorough testing process, which has been developed in a long and professional process in close cooperation with our experts.

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Evaluation process

You can find a detailed insight into our evaluation process, which forms the basis for our product ratings, here:

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