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Ownership Gumshoes: Five Sticky Summer Performance Tires Tested

11:38  05 october  2017
11:38  05 october  2017 Source:   caranddriver.com

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To help inform this most important purchase, we assembled five grippy sets of rubber from the max- performance class of summer tires , ranging from 3 to 8 per tire in our 245/40R-18 test size. It’s possible to buy stickier stuff, but the tires collected here exist in the sweet spot for

To help inform this most important purchase, we assembled five grippy sets of rubber from the max- performance class of summer tires , ranging from 3 to 8 per tire in our 245/40R-18 test size. It’s possible to buy stickier stuff, but the tires collected here exist in the sweet spot for

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Assuming your car is equipped with functioning braking and steering systems, plus seatbelts and a powertrain to propel it, that is. Indeed, assuming your car is in fact a car and not a cardboard box with a paper-plate steering wheel, tires are critical.

Gumshoes : Five Sticky Summer - Performance Tires Tested – Feature. July 25, 2017 Václav Svěrkoš.

You’ve likely heard the timeless wisdom that tires are the most important component on your car. It’s true. Assuming your car is equipped with functioning braking and steering systems, plus seatbelts and a powertrain to propel it, that is. Indeed, assuming your car is in fact a car and not a cardboard box with a paper-plate steering wheel, tires are critical.

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To help inform this most important purchase, we assembled five grippy sets of rubber from the max-performance class of summer tires, ranging from $153 to $198 per tire in our 245/40R-18 test size. It’s possible to buy stickier stuff, but the tires collected here exist in the sweet spot for street-performance tires, with excellent dry grip, impressive wet-weather performance, and expected tread life of 20,000 to 30,000 miles. It’s no coincidence that tires from this class are factory fitments on Porsches, BMW M cars, and Corvettes. The engineers that developed your car devoted months—possibly even years—of their lives to selecting the original-equipment tires. But performance is merely one element on a list of priorities that also includes optimizing for cost and weather conditions that may not exist where you live. If you’re looking to boost your car’s performance with a set of sticky summer rubber, this is where you start.

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Gumshoes: Five Sticky Summer-Performance Tires Tested© Marc Urbano Gumshoes: Five Sticky Summer-Performance Tires Tested

We conducted our testing in the shadow of Tire Rack’s South Bend, Indiana, headquarters, just paces from one of the nine warehouses that hold the more than 1 million tires the company keeps on hand. On a 10-acre track in identically equipped BMW 430i Gran Coupes, we measured lateral grip, braking from 50 mph, and lap times around Tire Rack’s autocross course. The circuit is short, at just 0.3 mile, but then long straights offer virtually no insight into a tire’s perform­ance. This rapid-fire tire exam is a chain of constant cornering with a slalom, a half-lap around the skidpad, and several tight right-handers that demand precise braking, a tidy line, and measured accelerator inputs. We repeated the exercises in the dry and on pavement saturated by a sprinkler system spraying 380 gallons of water per minute.

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Gumshoes : Five Sticky Summer - Performance Tires Tested – Feature. July 26, 2017 By: richardhaberkern.

A congressional-grade independent investigation into five summer performance tires .

Our sound meter reported minimal measurable differences between the five tire sets at a steady 60 mph, though our ears did pick up meaningful differences in sound quality on public roads. We also used that loop to judge ride-quality attributes such as impact harshness over broken and patched pavement.

Gumshoes: Five Sticky Summer-Performance Tires Tested© Marc Urbano Gumshoes: Five Sticky Summer-Performance Tires Tested

We were joined by Spencer Geswein, a talented shoe and meticulous engineer who spent nearly 10 years evaluating tires for Michelin in everything from Vipers and Vettes to a fully laden ambulance. He’s been a part of our evaluation team for prior tire tests, ­providing shrewd insights and robotic consistency behind the wheel. How consistent? Throughout our testing, we returned to a reference tire to recalibrate our subjective baseline and check if external factors were influencing our lap times. Over four and a half hours and some 70 laps on the dry-testing day, Geswein’s autocross time on the reference tire—an average of his two fastest laps—varied by just 0.03 second. Further evidence of Geswein’s credibility: He takes notes on graph paper.

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Gumshoes : Five Sticky Summer Performance Tires Tested . A congressional-grade independent investigation into five summer performance tires .

Gumshoes : Five Sticky Summer Performance Tires Tested . A congressional-grade independent investigation into five summer performance tires .

As in past tests, we eliminated the possibility of bias by running autocross laps without knowing which tires were on the cars. Geswein wasn’t even told what tires were included in the test until after he turned his last lap and finalized his notes. When tires A through E became Hankooks, Pirellis, Continentals, Michelins, and Goodyears, this is how they ranked:

Goodyear Eagle F1 Asymmetric 3© Marc Urbano Goodyear Eagle F1 Asymmetric 3 5. Goodyear Eagle F1 Asymmetric 3

Price Per Tire: $180
Service Description: 97Y
Load Range: XL
Tread Depth: 10/32 in
UTQG wear Rating: 300
Tread-life Warranty: none

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At $180 per tire, the Goodyear Eagle F1 Asymmetric 3 carries a price premium that can’t be justified by its performance. Despite costing $27 more than the cheapest tire in our test, the Goodyear was the caboose in every performance metric except for wet braking. In that test, the Goodyear’s 107-foot stop landed it in third place. It also wilts under subjective scrutiny, lacking high lateral firmness, the ability to impart steering feel, and the progressive rise and fall of adhesion as you approach and exceed its ultimate grip. Geswein noted that “excursions beyond the limit kill lap times,” as grip is slow to return once the tire starts to slide.

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Gumshoes : Five Sticky Summer Performance Tires Tested . A congressional-grade independent investigation into five summer performance tires .

Features · Jul 2017. Gumshoes : Five Sticky Summer Performance Tires Tested . A congressional-grade independent investigation into five summer performance tires .

Goodyear Eagle F1 Asymmetric 3© Marc Urbano Goodyear Eagle F1 Asymmetric 3

Even on our road drive, when our butts and ears were tuned to observe ride quality and road noise, we couldn’t help but notice that the Goodyear Eagle F1 Asymmetric 3 was unsettled by midcorner bumps in ways the other tires weren’t. Goodyear’s tire does deliver less ride harshness than both the Hankook and Continental tires, and road noise is nicely managed, but neither of those qualities is what makes a summer perform­ance tire great.

Hankook Ventus V12 Evo2© Marc Urbano Hankook Ventus V12 Evo2 4. Hankook Ventus V12 Evo2

Price Per Tire: $156
Service Description: 97Y
Load Range: XL
Tread Depth: 10/32 in
UTQG wear Rating: 320
Tread-life Warranty: none

This tire possesses the rare and admirable ability to maintain relatively high grip compared with its peak grip even as the tire begins to slide. This is particularly apparent when the front end begins to push into understeer. Where other tires scrub speed and sail off the driving line, the Hankooks hang on longer and with only a slight drift off the intended path. This means the driver is scarcely penalized for sloppy piloting. The Hankook is easy to drive at the limit, with quicker than average recovery when the driver attempts to reel it all in.

Hankook Ventus V12 Evo2© Marc Urbano Hankook Ventus V12 Evo2

In other categories, the Hankook impresses less. The Ventus V12 Evo2 is laterally soft when loaded up in a corner, and steering inputs are imprecise. On wet surfaces, its favorable progressivism dries up. It also emits tones that penetrate the cabin, with a high-pitched zip as it rolls and loud thumps over imperfections.

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Gumshoes : Five Sticky Summer - Performance Tires Tested . – You’ve likely heard the timeless wisdom that tires are the most important component on your car. It’s true.

Gumshoes : Five Sticky Summer Performance Tires Tested . A congressional-grade independent investigation into five summer performance tires .

And while easy to drive, the Hankook’s performances in both dry and wet tests were only marginally better than those of the Goodyear. Its fourth-place position was cemented by this objective performance that placed it in, well, fourth place.

Pirelli P Zero© Marc Urbano Pirelli P Zero 3. Pirelli P Zero

Price Per Tire: $153
Service Description: (97Y)
Load Range: XL
Tread Depth: 9/32 in
UTQG wear Rating: 300
Tread-life Warranty: none

Pirelli’s latest P Zero—reengineered for 2016 and identified by a small PZ4 molded into the sidewall—can be driven fairly quickly, as evidenced by its dry lap time, the second fastest in the test. Doing so, however, requires focus to toe the limit and patience to delay throttle inputs slightly. Without that diligence, it becomes easy to overdrive the tire, at which point grip levels fall off rapidly—but not as detrimentally as with the Goodyear—making graceful and quick recovery difficult.

Even a driver of Geswein’s caliber can’t make the P Zero more than a midpack performer in the wet, as the Pirelli’s grip takes a big hit when the water flows. The P Zero used 109 feet of pavement to stop from 50 mph in the wet, 14 feet more than the best-in-test Continental. The Pirelli also tied the Goodyear for the lowest lateral grip in the wet at 0.75 g.

Pirelli P Zero© Marc Urbano Pirelli P Zero

But it does offer commendable compliance on the road, and at $153 apiece, it’s the cheapest tire here. When we look at the test results, though, there’s a clear dividing line separating the top tier from the rest of the class. The Pirelli is on the wrong side of it.

Continental ExtremeContact Sport© Marc Urbano Continental ExtremeContact Sport 2. Continental ExtremeContact Sport

Price Per Tire: $164
Service Description: 97Y
Load Range: XL
Tread Depth: 10/32 in
UTQG wear Rating: 340
Tread-life Warranty: 30,000 miles

Senna at Donington. Hunt in Japan. ExtremeContact Sport in South Bend. Okay, the Continental can’t make you a wet-weather hero, but it is the choice tire when both rain and pilot are driving hard. The Continental swept all three wet tests with big margins and showed the smallest performance drop-off between dry and wet tests. Chief among its waterproof virtues, the Continental maintains relatively high grip when the tire starts to slide, unlike the Pirellis and Goodyears.

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The ExtremeContact Sport locked in second place with a solid performance in the dry, although not exactly threatening the Michelin. It delivers sharp steering precision that makes it feel alert and responsive when driven casually, but that quality fades when pushed past the limit in the dry.

Continental ExtremeContact Sport© Marc Urbano Continental ExtremeContact Sport

Our ears registered louder thwacks compared with the competitors over the same cracks and expansion joints on-road—similar to the almost metallic clank of a bouncing basketball. But that’s a small price to pay for exceptional wet grip and impressive dry performance. Plus, Continental asks only $164 for the ExtremeContact Sport, $34 less than our winner.

Michelin Pilot Sport 4 S© Marc Urbano Michelin Pilot Sport 4 S 1. Michelin Pilot Sport 4 S

Price Per Tire: $198
Service Description: (97Y)
Load Range: XL
Tread Depth: 9.5/32 in
UTQG wear Rating: 300
Tread-life Warranty: 30,000 miles

The Pilot Sport 4 S bundled the test’s highest lateral grip and shortest stopping distance into the only sub-30-second lap time. That betters the next-fastest tire, Pirelli’s P Zero, by 0.5 second.

In driving, speed usually grows as confidence grows, and this Michelin exemplifies that idea. The Pilot Sport 4 S assures the driver with its tenacious grip, stellar lateral stiffness, and progressive at-the-limit behavior. It is easy and rewarding to drive aggressively, and it allows the driver to return to full throttle earlier than any other tire in this test.

Michelin Pilot Sport 4 S© Marc Urbano Michelin Pilot Sport 4 S

Out in the real world, the Michelin demonstrated a subtle tendency to follow grooves in the road. Otherwise, the Pilot Sport 4 S is as docile in traffic as it is around a racetrack, never hammering down imperfections nor singing on the smooth stuff.

As with the Pilot Super Sport, Michelin is likely to be faced with so many automakers eager to fit the 4 S to their sports cars that it will turn customers away. Fortunately, you don’t need Michelin’s approval to fit your car with Pilot Sport 4 S tires.

2017 Porsche Macan Turbo with Performance Package First Test: More Is Better .
How much performance does the Performance Package actually add?For a 4,500-pound crossover, those are some seriously impressive numbers. And the experience behind the wheel is just as commendable as it looks on paper. "The Macan is the type of car you can get in and just drive for hours—it's equally at home at the track as it is on the highway, and, somewhat surprisingly, off-road," noted features editor Christian Seabaugh.

Source: http://us.pressfrom.com/autos/ownership/-88914-gumshoes-five-sticky-summer-performance-tires-tested/

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