His baseline times were just north of 33.5 seconds, which is typical for the series. According to David, the BFGoodrich driver will have to look farther ahead and make even earlier inputs–two abilities that are not always typical of novice and intermediate drivers. Out of all these tires, its much more friendly to constant track time. This tire also showed the most evidence of wear at the end of the dry test, with most tread corners broken off. The wet half had us gushing. The P Zero struggled with understeer, and post-limit grip recovery was noticeably worse than with most of the other tires. Tire Rack’s product-information specialist, Woody Rogers, loaned us two test cars (E92 BMW 328i coupes). It all depends on what the end goal is. We also conducted five-mile public-road tests to take sound-level measurements and evaluate the tires’ subtle differences in ride quality. (512) 667-6250 Each leg of the test had to be completed before the day’s weather conditions changed, meaning we were constantly racing against the clock. It also tied the Yoko for best dry skidpad. One (1) set of gen one and two (2) sets of DZII SS (all are staggered 235/40x17 & 255/40x17 tires on 7.5" & 9.0" stock wheels for both '99s, and the '01 has 8.0" & 9.5" SSR Comps). David, however, was slightly faster on the BFGoodrich than the Bridgestone, likely due to his extensive experience with the BFGs. The tread surface also became hot enough to burn our hand. This is the time when tire makers release their latest summer tires–especially the 200-treadwear, extreme-performance summer tires that have become so popular for autocross and track participants. The P Zero’s cellar position surprised us. Maybe there's a chance you could land near the top in a less than competitive event with one of those. “Excellent wet performance!” declared Geswein. By a lot. Our test schedule limited the cool-down time between each test, however, so our drivers delivered lap times that were progressively slower on that tire only. Our next round of testing using our E Street Miata had the potential to answer a couple new questions. Geswein thought the steering precision and lateral firmness were only slightly improved over the reference tire’s. Questions were asked: Will the new Dunlop degrade the racing even further by offering too much grip? To establish optimal inflation and look for trends, we ran each tire around the skidpad at a variety of pressures using our STS Miata. The one (1) set of first gen tires should probably be swapped out soon, more due to age than wear, so I will stick with Dunlop, only the DZIIIs this time. Braking distance was the average of five stops from 50 mph. Once again, we partnered with Tire Rack and used its South Bend, Indiana, shop and test track as our base of operations. Bracketing the test with the ZII Star Spec again showed that Tom was finding more speed as he became familiar with the car, dropping his average lap time on that tire by a half-second. At $166 apiece, the S-04 gains a few precious points in pricing, but second overall? The softer E Street Miata required a complete recalibration of inputs here. In those cases, optimal wheel sizing and suspension settings help distribute the tire loads across the tread face, keeping the Dunlop in its optimal heat range. I have oem AP2 V1 wheels and tires as well. IMO GRM is doing a great job of testing tires intended for the specific purposes most relevant to its readers. We collected a lot of data, and there are a lot of ways to slice it. The Pole Position’s lap time, in a three-way tie for fifth place, trailed that of the Hankook by nearly a full second. FINAL THOUGHTS: The battle between BFGoodrich and Bridgestone remains unsettled, since each driver went faster on the tire that best matched his driving style. The ZIII is now superseding the ZII Star Spec in our market, though, so a new spec tire was needed. No other tire got within two feet of its dry-stopping distance—a large gap considering that the spread from best to worst is less than seven feet. (817) 926-8863 Plus, it picked up discarded rubber. What about a "Budget Tire Test" with the Ohtsu 8000, it's the reincarnation of the Falken 512 we loved for cheap when you tested it. All rights reserved. These tires tend to be built in batches and sell out quickly. One key contender that kept popping up was the Falken Azenis RT-615K+, so we devised a test to evaluate the options. Spencer Geswein contributed his tire knowledge and driving ability, as well as his objectivity. Ohtsu 8000 - is not in the same class. On the dry course, the Goodyear showed less braking control than we felt it had in the wet. With R1R in front and RS-3 in back, I ended up with a car that you couldn't turn-in properly at corner entry and that had massive oversteer coming out of them. Extreme-performance tires go a step further: They offer the best dry-road performance available for the street. They had better, for $199 apiece. This tire is no great inspirer of driving confidence. On this day David served as primary test driver, while Kim collected both subjective and objective test data. This tire is also one of two in the test that come with a warning label regarding low-temperature storage and use. I should look to see if the DZIIIs come in a 195/65 x 15 for my Healey, currently running on some aged out Hankooks! Nice informative test! Those should benefit late-model Corvettes and Porsches plus a variety of newer pony cars. Story and Photography by Andy Hollis. For an extra $44 a set, however, the Michelin Pilot Super Sport does everything the S-04 Pole Position can do, and more. Each of these known quantities delivered the results we expected: Both turned very similar lap times and were fairly agnostic to pressure from a grip standpoint. Long conveniently has a shop at Harris Hill Raceway in addition to his two main stores north of Austin, Texas. Some 50 cars have been built, with most race weekends attracting at least 35 entries. Having the most lateral grip in the wet, at 0.86 g, helped close the lap-time gap with the Conti, too, but the Michelin got there with less finesse and feedback. The Yokohama finished just ahead of the bottom markers, with lap times at the slow end and midpack grip. (By definition, a slip angle produces a longitudinal braking force on the tire.). The price of a RE71R in a 205/50-15 has gone up 10% in the past 3 years. Geswein insisted on doing the test blind, and we followed suit. Dunlop’s top-hole extreme-performance tire was a mega performer in all categories of our 2009 tire test, where it walked away the clear winner. He said he found more overall grip but a noticeable rolling resistance when cornering, accompanied by a heavy steering feel.