09-18-2013, 11:45 AM | #1 |
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Track times, 328i, Mustang V6 Subaru BRZ
Featured on BIMMERPOST.com So Randy took out these cars to the streets of willow and they changed tires from stock to most aggressive tire. Here are the results: Mustang V6 on all seasons 1:33.1 328i on stock 18 summers 1:33.1 Most aggressive tire Mustang V6 1:30 328i 1:30.7 (there was a typo here before, I have corrected it) Subaru 1:31.1 I have some thoughts on this as this new information relates to VIR by Car and Driver
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09-18-2013, 11:53 AM | #2 |
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Related topic if anyone wants to pick it up:
At VIR C&D used the stock run flats on the 335i and they recorded a time of 3:13.2. The Mustang V6 ran a 3:12.5. I can almost bet the Mustang V6 was wearing some good rubber at VIR. Here we see the 328i knock off 3 seconds from its time just by switching tires. It seems to me the F30's performance is underrated in every test we have seen given this handicap by the run flat tires. Are S4s on run flats? Streets of Willow times for reference http://fastestlaps.com/tracks/willow...of_willow.html Looks like Randy owns Street of Willow too! Last edited by 300hp; 09-18-2013 at 12:38 PM.. |
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09-18-2013, 12:36 PM | #3 |
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When testing, I believe in isolating the variables. The fact that the wheels were changed with the tire changes can skew the results due to decreases/increases in unsprung weight.
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09-18-2013, 12:51 PM | #4 |
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It would've been most interesting to see them use the exact same tires for their upgrades to compare apples to apples. It's a bit more of a PR stunt when you have different manufacturers and different compounds against each other.
Nevertheless, a good indication of the benefits you'd see out of stickier rubber. Would've been fun to see a full R-comp that was shaved and properly warmed up for good measure.
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09-18-2013, 12:53 PM | #5 | |
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Was hoping to see the Michelin PSS on the 328.
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09-18-2013, 12:56 PM | #6 |
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You're missing the point. They aren't comparing the cars.
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09-18-2013, 01:01 PM | #7 |
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I think they were aiming for the best time and used the best tires on hand to achieve this. You cant ask for much given you have a guy who literally owns Streets of Willow and Mazda Laguna Seca doing the driving. The 328i is not going to lap faster than the Mustang V6 in the best case scenario for both cars. A 1:30.7 time is not bad though. The Stang V6 has a record of 1:29.09 at SOW
http://fastestlaps.com/tracks/willow...of_willow.html
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09-18-2013, 01:01 PM | #8 |
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09-18-2013, 01:05 PM | #9 | |
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Sorry Drob, just to be clear, my unsaid point would have been something like ....if S4 has good stock tires and 335i has run flats then if 335i wore better tires then it will beat the S4 finally.... that's the one that dead on arrival.
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09-18-2013, 01:12 PM | #10 |
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it's okay guys, only the person who owns F30 will know the truth!
and those driving a no-line f30 complain abt the performance? i'd say to them -- GET A M-PACKAGE. |
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09-18-2013, 01:19 PM | #11 |
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I lost some respect for Randy with the comment about "the runflats must be a better tire". You don't think the chassis and suspension could be why it had more grip or maybe the fact that the mustang doesn't have IRS? Silly racecar drivers. lol
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09-18-2013, 01:30 PM | #12 | |
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09-18-2013, 01:32 PM | #13 | ||
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What does you car run in the 1/4 now. Probably low 12s right
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09-18-2013, 01:36 PM | #14 | |
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If the only change was the tire and the mustang had more improvement with the swap, then yes the tires on the BMW were better to start with. Seems logical. That and it's fun to see a 'muscle car' with a solid rear axle besting other 'sporty cars' costing almost 50% more when they're just supposed to be good in a straight line. I'm running Mich PSS on my car with lighter and wider wheels and the grip is noticeable. I haven't taken it out to an auto-x yet, but my summer run flats did a pretty good job previously so I'm anxious to see how these perform. To note, my gas mileage went down noticably with the wider/stickier tires. It looks like about 1.5mpg is where it's settling in at from my stock wheels/tires. |
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09-18-2013, 01:38 PM | #15 |
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Absolutely no way, only thing I've done straight line performance wise is an intake and exhaust modification largely for sound Will hopefully do a performance ECU tune/pulley swap once I've finished all these cosmetic upgrades
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09-18-2013, 01:40 PM | #16 | |
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09-18-2013, 01:44 PM | #17 |
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So did the Mustang V6 have "performance package with brembos", more aggressive axle ratio and 255 square tires or was it the base version with smaller brakes, fuel econ axle ratio?
Pretty brutal for the F30 that a "secretary special" V6 stang that costs much less was able to match it on at the track and a low power low price momentum car was able to hang as well. Maybe BMW CCA track days are so expensive to keep all of the "crazy" Mustang 5.0 and base Corvette drivers away |
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09-18-2013, 01:45 PM | #18 | |
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I am going for MPE next, 5hp if the speculation is true and I am starting to love the exhaust notes
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09-18-2013, 01:56 PM | #19 |
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These comparos are always interesting, but I don't get too worked up when the F30 comes up short of our high expectations. Even the M Sport comes spec'ed to be equal parts luxury and sport... which is why even though I haven't even taken delivery of my 335i yet (any friggin' day now... ) I have already gotten PPK/MPE, OE camber knuckles, Apex ARC-8 9" wheels... and an appointment for an LSD install. Once Dinan releases their Shockware tune, I think I'll have the car that BMW "meant" to offer us enthusasts from the start.
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09-18-2013, 01:59 PM | #20 | |
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The BMW did come with the summer tires while the Mustang rocked the All Seasons, so I'd like to think the BMW tires were better. Regardless, the whole point was that better tires = better track times and there's no debating that. |
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09-18-2013, 02:00 PM | #21 | |
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I found that paint chips were killing me inside every day, so I did a full front xpel clear bra. Then I wanted to swap out the grill and do a nice high quality tint. Next was suspension pieces to make the car handle flat as a rock and then springs to reduce the wheel gap. New wheels will complete the look wrapped in PSS...plus all the little things like painting brakes, replacing bulbs with leds and getting the right detailing tools. I'm next gonna wrap the amber side reflectors in vinyl wrap, which will require taking the lights apart Suffice it to say that most people I work with and friends think I'm a moron for messing with this beautiful new car (which I probably am haha). The exhaust was probably the best upgrade I've done pound for pound, but the 3.0T has a much weaker engine note than the N55, but you'll be grinning every day you start her up. It has nothing to do with the performance...if that's what you want, go for some headers/downpipes |
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09-18-2013, 02:02 PM | #22 | |
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It's pretty well known that BMW has been putting much better RF tires on their newer cars than when they first started this. But this is just info I've read here + there, no lap times to back it up! |
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