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BFGoodrich G Force Rival S 1.5

The BFGoodrich G Force Rival S 1.5 is a Extreme Performance Summer tyre designed to be fitted to Passenger Cars.

8.9
Tyre Reviews Score Based on Professional Tests
Limited Confidence View Breakdown
Dry Grip
100%
Wet Grip
0%
Road Feedback
100%
Handling
100%
Wear
0%
Comfort
50%
Buy again
100%
1 Reviews
90% Average
300 miles driven
2 Tests (avg: 2nd)
BFGoodrich G Force Rival S 1.5

BFGoodrich G Force Rival S 1.5

Summer Mid-Range
BETA
8.9 / 10
Based on Professional Tests · 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
Dry
69.7
1.8x / 5 tests
Wet
62.8
2x / 3 tests
Comfort
55
0.32x / 2 tests

Cross-category scores are derived metrics that combine data from multiple test disciplines to evaluate real-world performance characteristics.

Handling
73.6
6 tests
Braking
53.3
2 tests
Score Components
Professional Tests
Weight: 80%
Tests: 2
Publications: 2
Period: 2021 - 2025
User Reviews
Weight: 15%
Reviews: 1
Avg Rating: 90%
Min Required: 5
Consistency
Weight: 5%
Score Std Dev: 0.37
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
Data Sources
TestPublicationDateSizePositionMetrics
2025 Tire Rack Extreme Performance Track Tyre Test Tire Rack 2025 275/35 R18 3/7 9 metrics
2021 Track Day 200TW Tyre Test Tyre Reviews 2021 225/45 R17 1/8 1 metrics
2
Tests
2nd
Average
1st
Best
3rd
Worst
Latest Tyre Test Results
The BFGoodrich g-Force Rival S 1.5 shared its sibling's harsh character with hollow impacts and stiffness creating jumpiness, though steering offered slightly more progressive ramp-up. Wet track performance revealed notably less traction than the Rival +, with slow recovery and a narrow margin for error despite quick steering. On dry surfaces the siblings felt similar, with the S 1.5 marginally more planted but not dramatically different on shorter tracks. The long road course showcased its "speed first" nature with strong front-end authority, confident steering, and a stable grip envelope that encouraged aggressive inputs. The tyre remained composed and balanced with predictable throttle response, minimal falloff, and excellent communication. Wear was more noticeable than its sibling, particularly on central ribs and outboard shoulder. Competitively close to the fastest and one of the most pleasant to track.
1st/8
Fastest tyre on test over a single lap, 3 lap average and a heat cycled 8 lap average. Excellent steering reaction, good feedback, high levels of grip, it felt like it enjoyed being driven quickly.
Slight lack of feedback at large steering angles compared to the Falken, some understeer at the end of the 8 lap run as the front left overheated.
The BFGoodrich Rival S 1.5 is a really enjoyable to drive that likes to be driven fast. It needs a little heat to be at its best, but once the tyre is warm, it's extremely fast, controllable and stable.

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Latest BFGoodrich G Force Rival S 1.5 Reviews

Given 90% while driving a Chevrolet camaro (305/30 R19) on track for 300 spirited miles
After buying my Camaro intended for autox/daily use, I bought a set of wheels/tires specifically for autocross. It is 305/30-19 at all 4 corners, which for the most part fits, other than some poke beyond the fenders. I drove them around on my commute for a few days when I first put them on to see if there were any rubbing issues that needed to be addressed. Despite the poke, there is zero rubbing on an otherwise stock car. On the street, they are certainly loud and tramline on some pavements pretty bad. That just comes with the territory. I've yet to drive them in the rain, but from what I've heard it's not good. So far I've done 2 autox events on them, one being a test n tune which has amounted to roughly 12 runs on them. I've yet to see any sort of discernable wear, but I'll have to keep an eye on that. The initial impression is that the grip is well beyond what I was used to on my old Focus ST. The BFGs do like heat, and it's harder to get heat in them than it was on the Focus with the RE-71Rs. There are probably a number of contributing factors here, but the BFGs are probably best for those in hotter states. The first two events were in colder weather where it barely broke 50F, and the fronts finally started coming into their best range after probably the third run, and the rears never got beyond lukewarm. In my first points event this year, I ended up 8th of 124, with more time to come as I get used to the new car/tires. After a few years of the RE71s and the Rivals dominating the autox scene, it'll be interesting to see how the Yokohamas and the coming Falkens will stack up.
March 30, 2020
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