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05-22-2011, 05:31 PM | #199 | |
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265/35/19s all round is going to increase the grip at the front while reducing steering feel and feedback. You end up going from a relatively neutral balance to one with more oversteer. Street driven cars always need slightly more grip at the rear, even if its only a 1% front to rear difference...you need to be confident that the front end grip you feel with the steering wheel will be matched by the rear grip...which in turn allows you to balance the car in the turn with the throttle. Cars that are too "pointy" are a total PITA for street driving. |
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05-22-2011, 05:46 PM | #200 | |
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My second point is, REGARDLESS of what setup I'm running (and I'm speaking from experience) I can MAKE the car understeer or oversteer depending on how I'm driving. I stand by my point - unless you're driving on the street like you're driving at a racetrack, square or staggered doesn't make much difference. Nothing that some very small driver tweaks can't compensate. |
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05-22-2011, 06:43 PM | #201 |
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Well, I can't report yet on the PSS square setup on the E92 specifically, since my wheels won't be here until next week, and then I have to order tires. But, if switching from the staggered to square setup does not reduce understeer, it will be a first for me. Frankly, I don't find the E92 to have a problematic amount of understeer. I'm making the change more to simplify rotation (and partly just as an experiment).
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05-22-2011, 07:04 PM | #202 | |
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05-22-2011, 11:18 PM | #203 | |
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I personally didn't like the sq setup, just me To each is own right |
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05-23-2011, 07:43 AM | #204 | |
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daytona superspeedway - we hit 160mph twice each lap Here's a fun one - chasing another car - we intentionally pushed the car to get loose on the turns barber motorsports park - cam mounted on the lip - note how well it did on the corkscrew autobahn south - there some good counter-steer action - this is his first time on track, competing for time. 1 out lap, then 3 hotlaps summit point there are a ton more from this week. |
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05-24-2011, 10:12 PM | #205 |
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I completely disagree. The PSS clearly has a much stiffer sidewall than the ps2 and a size able amount more grip in every direction. Albeit I did get the larger 255/275. The PSS is a MUCH better performance tire.
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05-25-2011, 02:55 AM | #206 | |
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My post was to reassure those who like me who wanted to switch to PSSs but still had nearly new front PS2s and were concerned about how the car would handle with a mix of PSSs on the rear and PS2s on the front. |
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05-26-2011, 03:58 AM | #207 |
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It's time for new tires and from what I've heard here the PSS's sound like an excellent option, but I need them ASAP since I got a flat and can't drive anywhere in the meantime...
I have OEM 19"s (220M) which came with Pirelli PZero 245/35/19 and 265/35/19. Stock (non-ZCP) suspension, but I do have spacers: currently 18mm/15mm, but they occasionally rub going over large bumps (especially with passengers), so I've ordered 12mm to put on the rear and move the 15mm to the front. I want the PSS's but it looks like the 265/35/19 size won't be available in the US until mid-June (can't wait that long). It sounds like people are successfully running 255/35/19 and 275/35/19, but what is the tradeoff of 255+275 vs. 245+265? If I do go with 255+275 I'm concerned about how they'll fit with the spacers, especially since the 245/35/19 and 265/35/19 PZeros already rubbed sometimes. If I drop down to 15mm/12mm should I be ok even with the 255/35/19 and 275/35/19 on stock suspension (E93)? Finally, where can I get these tires [in or delivered to SF] quickly? I'm without a car until I get new tires.
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05-26-2011, 01:24 PM | #208 |
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Just installed the Pilot Super Sports today on my OEM 19s 220M wheels using 255/35/19 for fronts and 275/35/19 and rears. Lowered on RD Sport springs and with 15mm front and 12mm rear spacers.
I haven't experienced any rubbing yet, but will give more feedback after I have driven more miles with these new tires. Pretty happy with the new tires, was using the Pilot Sport 2 previously.
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05-26-2011, 01:27 PM | #209 | |
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05-26-2011, 04:08 PM | #210 |
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I installed the Super Sports on the OEM Competition rims 10x19 +25 front and rear.
Sizes I used are 265/30-19 front and 295/30-19 rear. The rear tyre comes very wide - about 305mm, which is the maximum without additional mods. Great tyre |
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05-26-2011, 09:59 PM | #211 |
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I did a PSS demo day at California Speedway in Fontana a couple of days ago. We were driving 328's and ISF's around the infield course and an autocross course was setup in the parking lot. We did direct A/B comparisons against Pirelli, Goodyear & Conti's. The PSS's are astonishing. This tire is a major step forward compared to the PS2. Awesome tire that I would not hesitate to recommend.
A couple of pics from the event.... The wasted tire is a Conti after approx. 100 laps on the autocross course. I'm currently running 255/35/19F and 275/35/19R on ZCP's and love them.
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05-26-2011, 10:09 PM | #212 | |
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05-28-2011, 06:08 AM | #213 |
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05-29-2011, 10:40 AM | #214 | |
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05-30-2011, 06:35 PM | #215 | |
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The tire engineer is saying that certain sizes of the PSS & PS2 were optimized for use as a front or rear tire. Apparently the PSS in the size used was intended as a rear tire & didn't work well on the front while the PS2 is available in a front-optimized tire in the same size. The Roundel writeup on the PSS intro in Dubai mentions this (especially in the part about Alpina & Michelin).
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05-30-2011, 07:07 PM | #216 | |
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Did you get to drive any of the high power cars? .
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Let me get this straight... You are swapping out parts designed by some of the top engineers in the world because some guys sponsored by a company told you it's "better??" But when you ask the same guy about tracking, "oh no, I have a kid now" or "I just detailed my car." or "i just got new tires."
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05-30-2011, 07:51 PM | #217 | |
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06-01-2011, 12:32 PM | #218 | |
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Has anyone run these set ups on a completely stock (stock suspension / no spacers) E90 ZCP: 255/35-19 front and 295/30-19 rear or 265/30-19 front and 295/30-19 rear Is there any rubbing at full compression or at the suspension compression levels you'd see at a track? Please advise. Thanks!
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06-02-2011, 04:41 PM | #219 |
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Checked today at tirerack and still no 265/35/19...still holding out. If I can't wait any longer and need to go for the 275', would any tire installer put non-OEM size tires on?
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06-02-2011, 05:10 PM | #220 |
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Any installer should install any tire on a rim that is within the recommended width range, per that tire's manufacturer. For a 275 width PSS that range is 9" - 11".
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