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      10-20-2011, 03:27 PM   #1
KL
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Aquaplaning with 309 19'' wheels?

Those of you driving with 19-inch wheels, what are your aquaplaning experiences so far with this set-up?

I will pick up my new X3 2.0d with 309s next weekend from my dealer outside Stockholm (approx 600km motorway) so it would be nice to hear your thoughts and experiences on aquaplaning before starting the jouney home :-)
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      10-20-2011, 04:19 PM   #2
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I have the 309 all seasons on my 35i. In six summer months of driving I have not had any experiences of aquaplaning. Your experience may be different if your 309's have the summer performance tires.
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      10-20-2011, 10:07 PM   #3
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I've gone through some decent size puddles at a good speed and haven't noticed anything so far.
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      10-20-2011, 10:27 PM   #4
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I've had 309's with all season tires for 2 weeks. Driven in several storms with no problems.
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      10-21-2011, 12:46 AM   #5
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The dealer is providing me with a complimentary set of all-seasons, as my car was incorrectly delivered back in August with the staggered performance tires. Chicago has been quite rainy the past few days, but I've experienced no trouble.
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      10-21-2011, 04:20 AM   #6
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Thanks! The car will be delivered with standard Continental SC3 SSR performance tires but I hope this should not cause too much problems then.
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      10-21-2011, 05:17 AM   #7
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I have the Continental Summer performance on my staggered 309's. Not my favorite tires, but they've done well so far in some very heavy rain storms. I'd much prefer All Season performance, but haven't been able to find them for the staggered 309s (RFT). Planning to switch out to P SottoZero's in a few weeks. A bit of overkill for the area, but I'd prefer that than being stuck out in one of the few snow storms on Summer tires with 15k mi on them. Hoping there are All Seasons on offer in the Spring!! (P ZeroNero's would be great.)

I did drive through slush and ice last February when it was new. With the Summer tires on I was very cautious which was easy because it was just after a decent snow storm and folks around here drove like we were recovering from an Apocalypse. Got along well. Some slipping on clean, smooth ice, but that was expected. Xdrive performed very well there. Didn't encounter any braking situations or travel in slick snow. That probably wouldn't have been a great situation.
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      10-21-2011, 06:51 AM   #8
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'Hydroplaning" as I've always known it, is a result of two factors: speed and tread depth/design. The size of the wheel/tire combination has nothing to do with it.
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      10-21-2011, 07:14 AM   #9
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Quote:
Originally Posted by LEDZEP View Post
'Hydroplaning" as I've always known it, is a result of two factors: speed and tread depth/design. The size of the wheel/tire combination has nothing to do with it.
Yes, it's hard to imagine it being a problem with any NEW tyre.
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      10-21-2011, 08:02 AM   #10
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Just an fyi - summer performance tires are usually much better than all seasons in the wet...people usually think its the opposite!
http://www.insideline.com/features/t...vs-summer.html
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      10-21-2011, 08:03 AM   #11
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Quote:
Originally Posted by LEDZEP View Post
'Hydroplaning" as I've always known it, is a result of two factors: speed and tread depth/design. The size of the wheel/tire combination has nothing to do with it.
The width of the tyre is one factor as well.
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      10-21-2011, 09:12 AM   #12
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Quote:
Originally Posted by LEDZEP View Post
'Hydroplaning" as I've always known it, is a result of two factors: speed and tread depth/design. The size of the wheel/tire combination has nothing to do with it.
Aqua/aqui (Latin) =water
Hydr/hydra/hydro (Greek) =water

TireRack

The speed at which a tire hydroplanes is a function of water depth, vehicle speed, vehicle weight, tire width, tread depth and tread design. It depends on how much water has to be removed, how much weight is pressing down on the tires and how efficient the tread design is at evacuating water. While deeper water, higher speeds, lighter vehicles, wider tires, less tread depth and less efficient tread designs will cause tires to hydroplane at lower speeds; all tires will be forced to hydroplane at some speed.

See; size does matter!!!

Last edited by Radioactive; 10-21-2011 at 09:49 AM.
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      10-22-2011, 04:35 PM   #13
KL
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Quote:
Originally Posted by LEDZEP View Post
'Hydroplaning" as I've always known it, is a result of two factors: speed and tread depth/design. The size of the wheel/tire combination has nothing to do with it.
The size does matter, at least that is what I have experienced in my previous E91 M-sport where I changed 225/45/17 to 255/35/18 + 225/40/18. Both set-ups with brand new Michelin PS2s from start. The latter was far more unstable during heavy rain.
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