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Dunlop Grandtrek ST30 View Gallery (1)
225-245/55-65 R17-19 16 sizes 2016

Dunlop Grandtrek ST30

The Dunlop Grandtrek ST30 is a Premium Touring All Season tyre designed to be fitted to SUV and 4x4s.

6.9
Tyre Reviews Score Based on User Reviews
Limited Confidence View Breakdown
Dry Grip
84%
Wet Grip
71%
Road Feedback
73%
Handling
68%
Wear
70%
Comfort
71%
Buy again
57%
Snow Grip
60%
Ice Grip
55%
21 Reviews
67% Average
427,858 miles driven
Dunlop Grandtrek ST30

Dunlop Grandtrek ST30

All Season Premium
BETA
6.9 / 10
Based on User Reviews · Limited Confidence · Updated 23 Feb 2026

The Tyre Reviews Score is the most comprehensive tyre 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: 21
Avg Rating: 67.5%
Min Required: 5
Consistency
Weight: 5%
Score Std Dev: 2.75
History Points: 10
Methodology & Configuration
Scoring Process
  1. Collect Test Data: Gather results from professional tyre 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 tyre tests for the Dunlop Grandtrek ST30

Size Fuel Wet Noise
17 inch
225/65R17 102 H C C 70
225/65R17 102 H C C 70
225/65R17 102 H C C 68
225/65R17 102 H C C 71
225/65R17 102 H C C 71
18 inch
225/60R18 100 H B C 69
235/55R18 100 V C C 70
225/60R18 100 H B C 69
225/60R18 100 H B D 68
225/60R18 100 H C D 70
235/55R18 100 H C C 70
225/60R18 100 H C D 71
235/55R18 100 V C C 71
19 inch
245/55R19 103 T C C 71
225/55R19 99 H C C 68
245/55R19 103 S C C 71
View All Sizes and EU Label Scores for the Dunlop Grandtrek ST30 >>

Questions and Answers for the Dunlop Grandtrek ST30

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October 15, 2018

Just fitted 4 new grandtrek st 30 tyres one 2017 manufacture has a different tread pattern to the other three 2016 code not happy one is different did they change tread pattern or is this a counterfeit tyre

I'd be surprised if they'd changed the tread pattern, unless one is OE approved. Dunlop will be able to answer you with specifics.
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Size Price Range  
225/60 R18 £130.99 - £130.99 (1 Price) Compare Prices >>
Available in 1 tyre sizes - View all.

Top 3 Dunlop Grandtrek ST30 Reviews

Given 100% while driving a Toyota RAV4 (225/65 R17) on a combination of roads for 38 average miles
I have driven pretty fast om turns, and the tires griped the dry pavement very well. This is my second set of Grandtrek st 30 tires, and I never heard the tires screech on either set. On wet pavement the car moves slightly to the left or right when I drive over big puddles of water. The tires have great traction in the rain. The first set of tires lasted 74k miles. The 2nd and current set of Grandtrek st 30 tires has 38k miles.
November 30, 2024
Given 91% while driving a Suzuki grand vitara (225/65 R17) on mostly country roads for 10,000 average miles
Just bought them for Suzuki Grand Vitara 2.4L, it does have a great performance on the road. absolutely better than OEM bridgestone dueler.
October 10, 2023
Given 90% while driving a Honda CRV (225/60 R18) on a combination of roads for 38,000 average miles
These tyres have been on my 2012 Honda CRV from new. I have nothing else to compare them with. I am a very stable average driver and have just decided to change my tyres although they still have 3mm of tread left after 9 years. No problem with them at all and have always been comfortable, stable and quiet. Coming up to MOT time so changing for something similar with lower price. Considering your vehicle always gets you lower motoring costs.
September 4, 2021

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Latest Dunlop Grandtrek ST30 Reviews

Given 31% while driving a Toyota RAV4 (225/45 R17) on a combination of roads for 20,000 average miles
Came as standard on new RAV4, can't handle the moderate power on this car (225PS), wet performance poor (C rating) really gives no confidence, lateral grip is moderate but traction poor, it doesn't feel with any confidence that its clearing water under the tread effectively at all in heavy rain, the steering often feels aquaplaning light. Dry grip is not too alarming but they squeal like a pig at even very normal cornering without any power applied leaving you muttering under your breath 'what the heck are you moaning about?' at them. It entirely spoils any enjoyment of the vehicle at all as its too embarrassing to drive at even a normal pace. Whoever at Toyota chose these should fall on his ceremonial sword in shame. Fortunately after only 20K miles they are shot and I cam get rid of them! yay!
August 26, 2020
Given 95% while driving a Nissan X Trail (225/65 R17) on a combination of roads for 68,000 easy going miles
110k KM driven - about to change now.
November 23, 2019
Given 53% while driving a Toyota RAV4 (225/65 R17 H) on mostly country roads for 21,000 average miles
I inherited these tyres with a RAV4. On the positive side, the wear has been brilliant. They hardly seem to wear down at all, not even half worn on the rear tyres and over 18 months years old, 14,000 miles a year. The handling was not what I would have expected - I thought that they would be ideal as I live in rural Wiltshire and travel a lot on wet, muddy, icy and occasionally snowy roads. Sadly, the handling is poor and I have no more confidence in these tyres than ordinary summer tyres.Another example - the road we live on is down a slight hill, about 35% and in Feb / March 2018 we had some snow and it was impossible to get up the hill - just the same as my neighbours with their summer tyres.. The M + S (mud and snow) rating of these tyres doesn't seem to make any difference whatsoever. The crunch came when the driver in front of me, going through some roadworks, had to suddenly stop because of a manoeuvring truck. I really had to slam on the brakes. We were only going slowly through the roadworks (25mph) on a damp drizzly morning, but the car just wasn't able to stop in time. I changed them straight away to Bridgestone a005s (depsite the tyre fitters telling me that I had loads of wear left) because I just have no confidence in them anymore. Don't know if the a005s as I have only had them for 3 days now.
October 25, 2019
Given 66% while driving a Honda CRV 2.0 2009 (225/65 R17 T) on mostly town for 28,000 spirited miles
This came with my 3rd gen Honda CR-V. Got them since the first time I bought the car and they're pretty okay. As an asymmetrical tyre I think they're pretty decent if you're talking about performance, I got a good mileage on it. I drove about 60% city and 40% highway I could get 22.5 mpg consistently. Good handling and stability on high-speeds, great dry grip, good wet grip, very little waterplanning so it's good so far. The problem I had was with tread wear and noise level, and overall comfort on the road. I'm not sure why I just never felt the tyres all that comfortable, they can be a bit rough on bumpy roads and noisy on high speeds. I can tell this especially after I swapped them with another brand just last week.

I had 4 of them replaced on 2015 and after good 28,000 miles and 3 years, 2 of those 4 tyres went cracking and slips here and there when I climbed uphill. Got worried there so I replaced them with another brand tyres and I wished I've done that earlier. Overall the tyres isn't bad but there are other options out there for the price offering. Personally I wouldn't try get any of these again.
November 30, 2018
Given 48% while driving a Toyota RAV4 (225/45 R17) on mostly town for 800 average miles
It came on standard equipment for RAV 4 Hybrid 2017. I drove its for 800km with a bitter dissapointment.There are OK tyres, just ok because as most of the all season you cannot use it on winter. Small snow with a little bit of ice is the final countdown for its..I will no recomand this tires to anyone.
December 22, 2017
Given 60% while driving a Toyota RAV4 (235/55 R18 H) on mostly town for 5,000 average miles
An average tyre on dry, straight line driving on smooth surface roads but noisy on rougher road surfaces, do wear faster than I'm used to. Poor fuel economy/rolling resistance. Brake well during straight line heavy braking. On my RAV4 2016 back tyres let go too easily and the tail hangs out as though riding on an oily road; worst tyre I've ever driven on in any car for this. Given their overall performance on my RAV4 these are about the worst tyre I've ever had and would not buy them again if there was another reasonable brand available. I will drive these tyres to get wear out of them before off-loading them as the wet winter weather approaches and they become too uncertain and skittish. Could not recommend them based upon my experience and I don't push my tyres up to their limits as a rule.
March 14, 2017
Given 90% while driving a Nissan X Trail 2.5 petrol (225/45 R17) on mostly motorways for 27,000 spirited miles
Best overall performance for the price. Superbly comfortable and quiet while providing performance. No aquaplanning while hitting puddle at 90-100kmh. Awesome. Will definitely buy again since it is a bargain. Was on BS Dueller 470 and it is a major step up moving to the ST30 with the same price range. However, these tires will wear out faster for surebut at that price range, i don't care. It is cheap, comfy, quiet, and fun to drive.
March 2, 2017
Given 97% while driving a Honda CRV (225/60 R18) on mostly motorways for 38,000 average miles
1. 60.000 km, still 4mm profile
2. excellent on dry ant wet
3. quiet
4. just bought new set
May 2, 2015
Given 42% while driving a Toyota RAV4 (225/65 R17 H) on mostly country roads for 2,000 average miles
Dunlop Grandtrek ST30 tyres were a reasonable choice by Toyota to install onto their 2013 RAV4 all-wheel-drive SUV. They are OK, with good straight-line stability and a comfortable ride. They have reasonable cornering and braking abilities but are rather noisy on most dry tarmac and concrete surfaces. The 4-cylinder engine with automatic transmission and AWD never challenges their grip during acceleration. These Dunlop tyres are also quite good on unpaved dirt roads uphill and downhill, and through wet and dry mud, however one steep gravely section required locking the differentials just to get over a hump on which one wheel just kept losing traction and spinning too easily.

Remarkably good fuel economy for such a large vehicle is easily achieved: 8.0 litres/100km = 35mpgUK, while keeping within speed limits but not dawdling. The only demerits are the aforementioned noise on almost all paved surfaces, and quite poor wet road performance (wandering off a straight line, sliding wide on sharpish turns, and being pulled sideways by unavoidable puddles of water). Overall, I will keep using these Grandtrek tyres until they wear out, then replace them with a different brand reported to be quieter and with better wet road grip.
April 17, 2015
Given 39% while driving a Honda CRV (225/60 R18 H) on a combination of roads for 20 spirited miles
Had Bridestone on my CRV Mk3 then continental and now dunlop - By far dunlop must be the worst tyre to use on AWD motors.
April 12, 2014
Given 80% while driving a Honda CRV (225/65 R18) on a combination of roads for 32,000 easy going miles
Great in all weather conditions including deep snow but they wear down quickly on my Honda CRV. Car has only done a steady 32000 miles but have had 2 sets on front and one set on rear. Have now got Michelin Latitude Tour HP on the rear and am going to have these al;so fitted on the front.
March 23, 2014
Given 80% while driving a Honda CRV (225/60 R18 H) on a combination of roads for 20,000 average miles
Fitted front tyres for CRV Mk III in June 2010. Replacing them now Sept 2013 having done almost 20,000 miles. Fronts at 2mm, backs on the limit. Driving in rural SW France since Feb 2011... in mainly dry conditions: roads very hot in summer and ice and snow (no gritting on back roads) in winter but this occurs rarely. Happy with performance of these tyres in both conditions. Getting noisier now on main roads at higher speeds. However, haven't tried any other make so can't compare.
September 3, 2013
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