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The Tire Rack's Tire & Wheel Forum
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Old 07-18-2014, 07:27 AM   #1
Antti
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Join Date: Sep 2013
Location: Finland, Europe
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My Ride: E46 325i ///Mpackage
Really harsh ride with 18" bridgestone runflat tyres

Hi, i recently bought e46 325i facelift which has following setup:

Standard shocks
Eibach sportline lowering springs
18" oem wheels 215/40/18 + 245/35/18 Bridgestone potenza runflat wheels

Ride is so harsh that i think my tooth will fell off.. Is that because of lowering or is those runflat tyres causing it?
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Old 07-18-2014, 07:40 AM   #2
Dirtybrd
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My Ride: 02 330ci
Run flats are known to have a horrible ride


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Old 07-18-2014, 07:43 AM   #3
jfoj
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My Ride: '06 330CiC, '03 M5
Most runflats do give a rather harsh ride, but this coupled with lowering springs probably makes the ride far worse.
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Old 07-18-2014, 08:01 AM   #4
Antti
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My Ride: E46 325i ///Mpackage
Okay, so i will throw those to thras can.
I just bought set of original style 68. 17".. next is to order set of tyres. NOT runflat


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Old 07-18-2014, 11:27 AM   #5
Dirtybrd
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Sell them. Run flats have extremely thick and stuff sidewalls, hence to harsh ride. Being a low profile tire just makes it worse.


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Old 07-18-2014, 06:43 PM   #6
isellbrakepads
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My Ride: 2000 BMW 328i
The only runflat you can get right now that doesn't ride like that is the Driveguard from Bridgestone. The actual Potenza line of runflats from Bridgestone will definitely have a harsh ride.
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Old 07-21-2014, 03:18 PM   #7
generalvp
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I currently have Bridgestone Potenza RE050A run-flats and they are stiff as heck. With the added stiffness of the sports suspension, it gets real bumpy most of the times. I'm waiting for them to wear a little bit more before I change them to non-RFs.
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Old 07-21-2014, 03:30 PM   #8
Gary@Tirerack
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The Bridgestone Driveguard is indeed the softest riding run flat tire if you decide that you'd like to stick with a run flat.

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