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Metzeler Roadtec Z8 Interact View Gallery (1)

Metzeler Roadtec Z8 Interact

Metzeler Tires Premium Touring Summer

The Metzeler Roadtec Z8 Interact is a Premium Touring Summer tire designed to be fitted to Motorcycles.

7.3
Tire Reviews Score Based on User Reviews
Limited Confidence View Breakdown
Dry Grip
78%
Wet Grip
67%
Road Feedback
72%
Handling
68%
Wear
82%
Comfort
79%
Buy again
64%
13 Reviews
73% Average
50,803 miles driven
1 Tests (avg: 6th)
Metzeler Roadtec Z8 Interact

Metzeler Roadtec Z8 Interact

Summer Mid-Range
BETA
7.3 / 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: 1
Publications: 1
Period: 2014
User Reviews
Weight: 15%
Reviews: 13
Avg Rating: 72.8%
Min Required: 5
Consistency
Weight: 5%
Score Std Dev: 0.27
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
Data Sources
TestPublicationDateSizePositionMetrics
2014 Motorrad Premium Touring Motorcycle Tire Test Motorrad 2014 180/55 ZR 17 6/7 0 metrics
All Tests
View Test Results
1
Tests
6th
Average
6th
Best
6th
Worst
Latest Tire Test Results
2014 Motorrad Premium Touring Motorcycle Tire Test
180/55 ZR 17 • 2014
6th/7
Unlike the previous versions of the Z8, the new version is lighter, and works in the wet. The benefits are good, but the competition is also strong
View Test Results

Questions and Answers for the Metzeler Roadtec Z8 Interact

Ask a question
December 15, 2017

What are the correct tire pressures recommended for a CBR1000F? Have it at 36 front 42 rear (psi) but the front tire is wearing faster than the rear. Thanks

The pressures required for the Metzeler Roadtec Z8 Interact will be specified by Honda, not the tire manufacturer. Your handbook should give you the guide pressure, then you can modify the front pressures to help wear if required.

Top 3 Metzeler Roadtec Z8 Interact Reviews

Given 77% while driving a (180/55 R17) on a combination of roads for 4,500 average miles
Good grip in all weathers, however the set of tires only lasted 8,000kms, approx half of my riding is with a pillion. 235kg bike (2006 MotoGuzzi V1100 Breva), and 170kg of rider and pillion. All sorts of NZ sealed roads, and I am not an aggressive rider by any means. I would buy again because of the value for $, as I got similar kms out of Michelin PR5’s and they are much more expensive. My riding style does not warrant the extra cost of the Michelin PR5’s or PR6’s.
Helpful 889
March 3, 2023
Given 44% while driving a Triumph Street Triple (180/55 R17) on a combination of roads for 0 average miles
very slippery tire, nearly highsided today and it wasn't even that wet.. do not buy, road 6 are 1000% better
Helpful 897
November 6, 2022
Given 89% while driving a Triumph tiger 1050 (225/45 R17) on a combination of roads for 0 average miles
Ive run 3 sets of the z8s an been very happy with longevity for a daily commute (all weather) 60+ ks a day an also weekend fun. Easily getting 15000ks from rear tire on my 1050se Tiger. Not as sticky at Perelli Angel gts but far longer wearing only got just over 5000ks on gts. Onky gripe i have is flat zpot an thats also drooping tire pressure abit all still have flat spit start around 10000k.
Helpful 963
June 4, 2021

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Latest Metzeler Roadtec Z8 Interact Reviews

Initial Impressions Review
Given 84% while driving a Honda VFR 800 (180/55 R17) on for 2,500 miles
Purchased to replace an old set of Dunlop Roadsmart tires on a VFR800 V Tec. Used mainly for a daily commute and a mix of roads including motorway. I went for the O rated tire on the rear for extra life as the bike is quite heavy. In short, I can't fault them. I've used them in all weathers including zero degree temperatures. They are quick to warm up and give all the grip, comfort and feedback you will ever need. I will definitely be buying the same again.
Helpful 50
February 4, 2026
Given 33% while driving a Honda CB400SF (160/60 R17 W) on mostly town for 100 easy going miles
I live in Singapore, a country with a tropical climate and high humidity, and lots of torrential rains. It is a very small island-like country that mostly communes about 30km at a stretch and rarely above 40km in one go. My bike only weighs about 200+kg. Climate usually above 30-degree Celcius all year round. My average speed in the expressways usually around 80km/h to 100km/h. During dry conditions, this tire feels just normal, nothing extraordinary. Feel a bit slippery, to be honest. However, once the rain starts pouring, the traction totally drops to zero, performance in wet is worse when compared to Michelin Pilot Power 2CT. The tire feels so slippery, and traction is so bad that to me it is unacceptable. In my opinion, I would rather use Road 5 to be the better one-tire-do-all dry/wet as my choice of tire. I would not recommend this tire at all for use in Singapore. It is not a dangerous tire to use.
Helpful 986
September 25, 2020
Given 86% while driving a Triumph tiger 1050 (180/55 R17) on mostly country roads for 9,500 average miles
Ive run a couple of sets of these in all kinds of weather on my 2012 Triumph 1050se Tiger an have been a great allrounder. Getting 15000klm out of rear easily. Playing spiritedly on the mts or just cruising ha e suited the bike well.
Helpful 601
January 12, 2018
Given 86% while driving a Yamaha FZS 600 (160/60 R17 W) on a combination of roads for 6,200 spirited miles
A lot less of slip when the tire is on the end of its life compared to Dunlop. Under heavy excellerations from the curves slips when worn out. Although I often ride aggressively, the meat on the edge is still there. The meat in the centre is gone but it still feel safe and handles good. Done about 10k km on middle weight bike all roads and types of riding. Although it costs a bit more then Dunlop's Roadsmart, gives more feedback and feels safer. Good tire, I am considering buying it again, but I might try other manufacturers just from curiosity.
Helpful 620
June 30, 2017
Given 100% while driving a Kawasaki ER6N (225/45 R17) on a combination of roads for 9,000 easy going miles
The dry and wet grip is awesome
Helpful 588
March 28, 2017
Given 47% while driving a Honda cbr1000rr5 (190/50 R17) on a combination of roads for 6,000 spirited miles
Have had these tires on my fireblade for 10 months have been across Europe and used as a daily in all weather. In warm dry weather never had a problem grip level was fairly high despite lack of feel from the front, cold wet weather was another story rear very loose slipping even at low throttle and lean angles with no confidence from the front. After 6000 miles still have plenty of tread left but wet cold grip getting worse now swapping to metzeler m7 rr.
Helpful 622
December 28, 2016
Given 67% while driving a Kawasaki ZZR1400 (190/50 R17) on mostly country roads for 3 spirited miles
My 2012 ZZR1400 had these tires on when I bought it last yeaar and were not brand new. I have done 3,500 miles including two up trips and quick road riding and they still have 4mm of tread on so they're lastin well for a big powerful bike. They struggle on colder, damp roads when in lower gears (even with middle traction control mode selected) but that's probably the big torque of the bike - nothing to worry you mind. My only critisim is a lack of feel from the front at town speeds - mini-roundabouts and the like. Think I'll go for some Bridgestones next as I know that they'll sacrifice some tire wear but I should have a more sporty ride with better feal
Helpful 562
February 21, 2015
Given 79% while driving a BMW (190/55 R17 W) on a combination of roads for 5,000 spirited miles
Can't believe these tires haven't been reviewed yet.

They are the best tires I have used alongside Michelin Pilot Road 4s.

Exceptional grip in the wet, and very progressive feedback.

Single compound mind you, which doesn't bode well for touring as i've had two pairs sculpt on one side and wear unevenly, causing replacement before you should have to.

I'd say they're better suited to 600cc 1000cc lighter bikes. They fared longer fitted on a Z1000 than the Beemer.

Helpful 587
January 28, 2015
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