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View Poll Results: Which PSS size for the OEM 19" wheel | |||
255/35R19 - 275/35R19 (F8X specific) | 75 | 17.05% | |
255/35R19 - 275/35R19 (Generic) | 26 | 5.91% | |
265/35R19 - 285/35R19 | 108 | 24.55% | |
275/30R19 - 295/30R19 | 62 | 14.09% | |
275/35R19 - 295/35R19 (F8X-F1X specific) | 169 | 38.41% | |
Voters: 440. You may not vote on this poll |
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06-02-2015, 08:29 PM | #89 | ||
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9.5 inch wheel would stick out on the 255 right? I definitely don't want wheel spin.
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06-02-2015, 08:48 PM | #90 | |
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I am not saying that other sizes won't work on the car, just that it will upset the DSC calibration. You won't get wheel spin, DSC will only THINK it sees wheel spin and cut power .
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06-02-2015, 08:49 PM | #91 | ||
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06-02-2015, 08:55 PM | #92 | |
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That is the equivalent of running a square setup. My track setup is also square and I cannot really use MDM with it because it keeps kicking in all the time. If you don't push the car too hard, it will not matter. But if you do get on it, I believe you will get frustrated. Have you considered 275/30R19 in front with 295 or 305/30R19 in the rear? That would work.
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06-02-2015, 11:13 PM | #93 |
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Very useful thread chaps!
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06-03-2015, 05:14 AM | #94 | ||
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06-03-2015, 03:40 PM | #95 | |
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Just a friendly FYI, 275/30 is in backorder and has been for a while. I was told by Tirerack that it could be another 2-3 months. I think I'm OK with waiting, but push comes to shove, I might just have to go with another brand completely.
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06-03-2015, 06:19 PM | #96 |
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Better grip, better responsiveness and hold up WAY better at the track to heat. They are a better performance tire than the PSS. However, the sacrifice is a slightly (and I mean slight) increase in noise and harshness. They also weigh more than PSS.
For a street only tire, I would stick with PSS as you get a great blend of performance and comfort. For a street tire with moderate track use, the RE-11 or AD-08R is notably better than the PSS which, IMO only, are not suited for track time after you get past a beginner level.
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06-04-2015, 01:19 AM | #97 | ||
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06-04-2015, 10:05 PM | #98 | |
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06-05-2015, 12:49 PM | #99 |
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So you are saying 275 and 295 is best? 265 and 295 wouldn't work? If you look at the different in height, 255 goes with 295 and 265 with 305. 275 is pretty ridiculous for the front tires..
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06-05-2015, 02:57 PM | #100 |
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Just found out about a non-negligible drawback to the 275-295/35R19 setup: aquaplaning .
I just drove back home from work in a heavy downpour, and the car aquaplaned much more than it used to on the stock 255-275/35R19 setup. I expected a little more floating, but not that much. The car now gets skittish running through relatively mild puddles. The car is still plenty drivable, it is not dangerous or anything. It is just not as good as it used to when driving through standing water.
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06-05-2015, 03:04 PM | #101 | |
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06-05-2015, 03:11 PM | #102 |
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It is a rather big drawback for me, because my street MPSS are also my wet track setup .
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06-05-2015, 04:07 PM | #103 | |
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06-05-2015, 09:30 PM | #104 |
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What I'm saying is that you need to keep the stagger respectable. A 40mm difference between front/back will result in the rear tires overpowering the fronts during extreme driving, i.e. understeer that's fairly significant which you absolutely do not want. Personally a 30mm difference would raise my eyebrows but if you're worried about looks over performance, it'll work.
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06-06-2015, 10:05 AM | #105 | |
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255/35 275/35 sucks and won't work 265/35 and 295/30 I wanted but then the height is different and will cause DSC issues. 265/35 and 305/30 is too big of a staggered difference and will hurt performance 275/35 and 295/30 is way too big on the front and I don't even know if it would be flush with a 9.5 wheel. Not sure what to do again...
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06-06-2015, 10:39 AM | #106 | |
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This is the problem with modding wheels... often compromises need to be made in some way.
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06-06-2015, 10:42 AM | #107 | ||
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You're saying 265/35 and 305/30? My only concern besides too much stag is if it would rub.
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06-06-2015, 10:48 AM | #108 | |
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If the offsets of the wheels are right for a 305, it shouldn't rub. Also, I really don't think the 305 rear makes that much of a difference relative to understeer outside of a track. If you are getting excess understeer because of 20mm extra front/rear stagger then you are going WAY, WAY, WAAAYYYY too fast on the street. I would bet you wouldn't even notice on a track unless you were a fairly advanced driver. The biggest consideration, IMO, the height ratio front/rear relative to DSC. Therefore, given everything you are trying to balance, I would go 265/35 and 305/30.
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06-06-2015, 11:14 AM | #109 | ||
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06-06-2015, 11:30 AM | #110 | |
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I'd love other (CanAutM3 ) views on this but that would be my view.
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