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GT Radial Champiro HPX

The GT Radial Champiro HPX is a High Performance Summer tyre designed to be fitted to Passenger Cars.

6.6
Tyre Reviews Score Based on User Reviews
Limited Confidence View Breakdown
Dry Grip
87%
Wet Grip
88%
Road Feedback
87%
Handling
87%
Wear
68%
Comfort
70%
Buy again
73%
12 Reviews
80% Average
131,000 miles driven
1 Tests (avg: 17th)
GT-Radial Champiro HPX

GT-Radial Champiro HPX

Summer Mid-Range
BETA
6.6 / 10
Based on User Reviews · Limited Confidence · Updated 30 Jan 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: 1
Publications: 1
Period: 2012
User Reviews
Weight: 15%
Reviews: 12
Avg Rating: 79.9%
Min Required: 5
Consistency
Weight: 5%
Score Std Dev: 1.98
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 1.8 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 8 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 0.1 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
Data Sources
TestPublicationDateSizePositionMetrics
2012 Autobild 50 Tyre Braking Test Auto Bild 2012 225/45 R17 17/45 0 metrics
1
Tests
17th
Average
17th
Best
17th
Worst
Latest Tyre Test Results
17th/45

Questions and Answers for the GT Radial Champiro HPX

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November 14, 2018

What does Champiro mean ?

Champiro is just the range name given by the Indonesian part of GT to signify it belonged to the GT Radial car tyre range, a bit like Bridgestone’s Potenza or Pirelli’s PZero ranges.
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Top 3 GT Radial Champiro HPX Reviews

Given 83% while driving a Nissan Primera (225/45 R17) on mostly country roads for 16,000 spirited miles
The best tyre for money. A can´t fault them. Maybe they need more km than usual to get optimal behavior. Due to their directional pattern, they are verry good in wett, and is save and funny to overtake cars. They could have M+S mark, because when I have to switch to them on the beginning of winter, they were much better than Nokian WR D3 on snow and slush.
Ask a question | Helpful 843
December 3, 2019
Given 94% while driving a Saab Automobile 9 5 Aero Saloon (225/45 R17 W) on a combination of roads for 6,000 spirited miles
What are deamed as budget to mid range tyres, you won't go far wrong with these tyres on your car. They are predictable, give excellent grip in the dry and in the wet, minimising aquaplaning. I am more than happy with these tyres on my 250bhp Saab and i would not hesitate to buy these again. Tyre wear is excellent, road noise is no worse than any other brand of tyre. At the price of £275 for 4 tyres, they offerd me superb value for money. By the way, my style of driving is 'aggresive' or 'pushing it' but the closest match i can select on here is 'spirited'!!
October 3, 2012
Given 80% while driving a Peugeot 206 cc (205/45 R16 W) on mostly country roads for 20,000 average miles
Someone here mentioned hard rubber. I get the impression that GT Radials are of softer rubber than many - hence stopping distances and cornering grip are impressive, but wear rate is greater. However if they cost 70% what others do, and last 70% as long, then I'm very happy to have the extra margin of stopping safety for nothing, in effect. I haven't noticed the noise issue on these or other types of GT Radial.
May 8, 2014
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Latest GT Radial Champiro HPX Reviews

Given 63% while driving a Honda Accord CTDi (225/45 R17 W) on a combination of roads for 15,000 average miles
I purchased these tyres and was happy with all aspects of the performance, however the car failed its MOT as the 2 rear tyres were deemed dangerous.

The tread was ok, however the inner sidewall on each tyre had developed a split all the way around the circumference. Unfortunately the tyres were not send back for inspection, but it was bad enough to fail an MOT.

Personally I would not purchase them again for that reason, at £80 approx per corner, and driven at standard speeds on a family car they should last longer.

Not sure if links are allowed? - I have put some images online here: http://gt-radial-champiro.blogspot.co.uk
June 10, 2013
Given 99% while driving a Toyota Corolla (225/45 R17 V) on a combination of roads for 5,000 spirited miles
Had these fitted to new (different sized) wheels, so not a straight comparison but they instantly improved the handling and stability of the car in all conditions.

Since then I have done a significant amount of miles and these tyres have proved to be an excellent choice. As well as the excellent road holding, they are also wearing exceptionally well and they also don't lose their pressures.

All in all, a thoroughly recommended quality tyre at a midrange price. Would definitely buy again and urge you to try a set!!!
July 4, 2012
Check out how the BEST all seasons tyres perform against premium summer and winter tyres!
Given 56% while driving a Vauxhall Vectra cdti (150) (215/50 R17 W) on mostly town for 8,000 average miles
These tyres started off performing excelent, however after 6 months the noise like others have experienced has become totally unbearable!! would never buy again because of this!!
June 11, 2012
Given 59% while driving a Mitsubishi lancer (205/50 R16) on a combination of roads for 20,000 spirited miles
Overall, this is a pretty grippy tyre for its price.

As of now, I am writing this review, I just got the tire balanced hours ago.

This tires shown very little wear, however, I guess this is due to the pretty "hard" rubber. A solid rib provides good steering feedback, as well as "tram-line", forcing me to do steering corrections when driving on uneven roads.

However, after around 15,000 KM, the tire noise is unbearable. There is a constant "drone" when speed are above 40km/h. Severe vibrations (due to noise) during stopping.

Will not buy again, because of the tire noise is even louder and more uncomfortable than semi-slicks.
February 25, 2012
Given 91% while driving a Audi A3 Sportback (225/40 R18 W) on a combination of roads for 25,000 spirited miles
Dry Grip: Exceptional for an economy tyre. The only difference that you'll notice between this and a premium brand is that it seems to give a little bit more (side walls aren't as stiff) under heavy cornering or huge acceleration. Overall though, you would have to be driving like a lunatic in order to overwhelm these tyres.

Wet Grip: Probably the best part of these tires. They disperse water so well that you will struggle to believe that your car isn't invincible in the wet.

Icy Roads: I've not tried them on full blown deep snow, but on what I've been able to, light snow and very icy (Black Ice) roads, these tyres take them in stride. Again once your driving within a rational limit these tyre's won't fail you.

Wear: I've done over 25K in these tyres and the only reason it is getting changed is that my vehicle needs to the wheels aligned and the camber adjusted as i've gotten an uneven wear of 4mm-4mm-1mm. Which as you can tell would suggest that I'd have at least another 5-8K left in the tyres.

Progressiveness: This is where you can tell that it's an economy tyre. Unlike the Pirelli's originally supplied with the vehicle, going into a corner you get a steady predictable slip factor. To expand, you know that going into a corner of Y tightness using X speed will result in Z slipping. Depending on how you look at this, this could be a good thing or not. It's good because it is predictable, but bad because you don't have that infinite grip that you'd have gotten from the Pirelli's. That being said, the Pirelli's would give you so much grip and then just give so you weren't always sure when it was going to give, although like stated earlier, you'd have to be driving like a lunatic to reach that point.

Overall: I've purchased my 3rd pair of tyre's and won't switch brands until they stop making these. Can't say anything bad about them and for around £65 - £70 per tyre, a bargin since I do around 30K miles per year.
January 26, 2012
Given 86% while driving a Volkswagen Golf GTI Mk 5 (remapped 270 BHP) (225/40 R18 W) on a combination of roads for 9,000 spirited miles
Our golf gti mk5, stage 2 re map, always had michelin tyres before.These tyres are just as good in the dry and just as effective in wet.Amazing performance For less than 1/2 the price.Forget premium tyre hype!TRY THEM!
December 20, 2011
Given 96% while driving a Vauxhall Vectra (215/50 R17 W) on a combination of roads for 5,000 average miles
Purchased these GT Radial Tyres via Event Tyres (mobile tyre fitter) who where great by the way, got 4 tyres for £300. I previously purchased GoodYear tyres at double the price, but this time decided to go for the Mid-Range GTRadials. I have found them to be superb, they grip superbly in the wet and dry, quieter at speed, no vibration, the steering feels very well ballanced. The only very small downside is the sightly ugly tread pattern but would definatly buy again!
October 10, 2011
Given 79% while driving a Skoda Octavia vRS (225/45 R18) on mostly town for 0 average miles
A good tyre for the price,no doubt you can improve on these but at the price I am more than happy with the performance in both wet and dry conditions.
September 29, 2011
Given 73% while driving a BMW 325i M Sport (225/40 R18 W) on mostly motorways for 2,000 spirited miles
Took a chance on these for the front wheels of my car. I can say that I am glad I did!

They hold the road well, even in the wet, and are reasonably quiet too. Cant comment on the comfort of them, as I have sport suspension and low profiles, so everything is bumpy! lol

Would recommend to anyone to give a go if buying to a budget!
August 15, 2011