Browser Extensions 



Close

Why is ReviewMeta.com a Must-Have for Amazon Shoppers?


Free Phone Apps

Free Browser Extensions




SHIMANO SM-RT56 Disc Brake Rotor 6-Bolt (180-mm)
More product info From SHIMANO

Amazon Reviews for  SHIMANO SM-RT56 Disc Brake Rotor 6-Bolt (180-mm)
Rating:
750 Ratings
100 Reviews
("Ratings" vs. "Reviews")
0% of potentially unnatural reviews removed (why?)
Adjusted:
View/Edit Adjustment
Jump to Report Card
Report Info:
Last Updated: Dec 25, 2020
Refresh Report
Show Report History
Note: While Amazon.com claims 750 Ratings, we counted 100 Reviews available on their site.
Note: We only analyze "reviews" and ignore one-tap "ratings".

Report Card

Pass Overall Grade
FAIL Suspicious Reviewers
WARN Deleted Reviews
WARN Brand Repeats
WARN Phrase Repetition
PASS Rating Trend
PASS Unverified Purchases
PASS Word Count Comparison
PASS Overlapping Review History
PASS Reviewer Participation
PASS Reviewer Ease
PASS Incentivized Reviews

Most Trusted Reviews

Nice upgrade [Go to full review]
Feb 20, 2016      
100% TRUST
  • Verified Purchaser
  • Easy Grader (avg. rating: 5.0)


Least Trusted Reviews

We couldn't find any low-quality reviews

Analysis Details

Fail Suspicious Reviewers

Take-Back Reviewers


52 of the 100 reviewers have had at least one of their past reviews for another product deleted. This is an excessively large percentage of Take-Back Reviewers which may indicate unnatural reviews.

from take-back reviewers

from reviewers without previously deleted reviews


4.7
4.7


Read more about our Suspicious Reviewers test.

Warn Deleted Reviews

We discovered a total of 2 deleted Reviews for this product, with an average rating of 5. Even though deleted reviews don't affect the average rating, the fact that action was taken to delete reviews raises some red flags about the integrity of the reviews for the product as whole.

There are a few limitations to keep in mind regarding the Deleted Reviews test:
  1. We don't have a magic ability to collect every single deleted review; we can only identify reviews as deleted if we collect them on one date and then notice they are no longer visible on a subsequent date.
  2. We have no information on reviews that were never published in the first place.
  3. We also don't know why these reviews were removed. It could be action from the platform, personal decision by the review author, part of an entire account closure, even some data error on our part, etc.
Read more about our Deleted Reviews test.

5.0 average rating of deleted reviews

5.0


Show distribution of deleted reviews

Warn Brand Repeats

Brand Repeaters


29 of the 100 reviewers have reviewed other products for this brand. While this is more Brand Repeaters than we'd expect to see, it does not appear to have a significant impact on the overall rating.

from Brand Repeaters

from Non-Repeaters


4.7
4.7


Read more about our Brand Repeats test.

Warn Phrase Repetition
Reviews that contain one of these phrases are NOT necessarily devalued; read more about how this test works here.

Common Phrases in Titles:
2 reviews
(5.0/5)
2 reviews
(5.0/5)


4 of the 100 total reviews for this product use substantial repetitive phrases between them. This is an excessively large percentage which may indicate unnatural reviews.

from reviews with substantial repetitive phrases

from reviews without substantial repetitive phrases


5.0
4.7


Read more about our Phrase Repetition test.

Pass Rating Trend

  • 0%
  • Created on high-volume days
We counted 100 reviews for this product over the span of 2,776 days, an average of 0.0 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 2 or fewer reviews on any given day. We didn't find any days exceeding this threshold.
Read more about our Rating Trend test.

Pass Unverified Purchases

2 of the 100 total reviews for this product are unverified purchases. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.

from unverified purchasers

from verified purchases


5.0
4.7


Unverified purchases may be the result of Kindle Unlimited readers, buyers who didn't pay full price, or reviewers who did not purchase the product at Amazon. Read more about our Unverified Purchases test.

Pass Word Count Comparison

  • 0%
  • Have an overrepresented word count
We didn't find any review word count groups that had a statistically significant greater concentration than what we'd expect to see in this category.
Read more about our Word Count Comparison test.

Pass Overlapping Review History
Reviewers of this product have ALSO reviewed the following products:

Does not include products
from the same brand


20 of the 100 reviewers have substantial overlapping product review history. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.

from reviewers with substantial overlapping history

from reviewers without a substantial overlapping history


4.8
4.7


Read more about our Overlapping Review History test.

Pass Reviewer Participation

  • 25%
  • From reviewers with an overrepresented participation

We see the following 1 participation group with a statistically significant greater concentration than what we'd expect to see:In total, we found that 25 reviewers (or 25%) are within an overrepresented participation group. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.

From reviewers with an overrepresented participation

From reviewers with a properly represented participation


4.7
4.7


Read more about our Reviewer Participation test.

Pass Reviewer Ease
The ease score is the average rating for all reviews that a given reviewer submits. The average ease score for reviewers of this product is 4.3, while the average ease score for reviewers in this category is 4.3.

4.3 Product's Average Ease Score

4.3 Category's Average Ease Score


4.3
4.3


Read more about our Reviewer Ease test.


Pass Incentivized Reviews
On Oct 3, 2016, Amazon prohibited incentivized reviews, however we still test for them since there are still millions in our dataset.

  • 0%
  • Admitted to receiving an incentive
We didn't detect any reviews that used language indicating they were incentivized.
Read more about our Incentivized Reviews test. Check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.