Strange problem with new Hankooks...

stevefoster · 04-07-2014, 10:37 AM

Just replaced the DWS tires (which replaced the Bridgestone runflats) on my 335is with these top-rated Hankook Ventus S2 noble 1 tires. At low speeds only, like 20 or 30mph, the car feels like it's bouncing along the typical lousy roads here in NJ. On perfectly smooth surfaces it's smooth. And at high speeds there's no problem. But at low speeds it's as if the tires and the suspension don't like each other. Had tires road- force balanced. Never experienced this sensation before on any of my 7 previous BMWs, or on my previous 335i. Any ideas?

SteveF

Nitrous Garage · 04-07-2014, 11:09 AM

Double check the tire pressure. They may be inflated too much.

stevefoster · 04-07-2014, 01:55 PM

Thanks, but I tried that. Already down to 32 front 35 rear. How low can I go?

Steve

FCobra94 · 04-07-2014, 02:24 PM

Quote:

Originally Posted by stevefoster

But at low speeds it's as if the tires and the suspension don't like each other.

What does that mean? You're gonna have to be more specific...

stevefoster · 04-07-2014, 03:08 PM

by that I mean that the car feels jumpy, like it's bouncing far more than it should for the road conditions and speed. Actually, it feels pretty much like an out-of-round tire feels, but the faster you go the smoother the ride. And that's not how an out-of-round tire should act. Right?

Steve

mlifxs · 04-07-2014, 03:08 PM

Quote:

Originally Posted by FCobra94

What does that mean? You're gonna have to be more specific...

lol you don't understand?

FCobra94 · 04-07-2014, 03:21 PM

Quote:

Originally Posted by mlifxs

lol you don't understand?

Oh, tires and suspension don't like each other...I know where this is going lol

mlifxs · 04-07-2014, 03:25 PM

Quote:

Originally Posted by FCobra94

Oh, tires and suspension don't like each other...I know where this is going lol

yeah nice! was just having fun. I'm sure sure sure I've written vague stuff like that too. your reaction was what I was thinking..

04-07-2014, 10:37 AM	#1
stevefoster Private Drives: '11 335i coupe SG/Blk Join Date: Aug 2010 Location: Central NJ Posts: 81 iTrader: (0)	Strange problem with new Hankooks... Just replaced the DWS tires (which replaced the Bridgestone runflats) on my 335is with these top-rated Hankook Ventus S2 noble 1 tires. At low speeds only, like 20 or 30mph, the car feels like it's bouncing along the typical lousy roads here in NJ. On perfectly smooth surfaces it's smooth. And at high speeds there's no problem. But at low speeds it's as if the tires and the suspension don't like each other. Had tires road- force balanced. Never experienced this sensation before on any of my 7 previous BMWs, or on my previous 335i. Any ideas? SteveF
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04-07-2014, 11:09 AM	#2
Nitrous Garage BimmerPost Supporting Vendor Drives: E82 135i / E92 328i / E60 550i Join Date: Oct 2013 Location: Pomona, California Posts: 1,639 iTrader: (0)	Double check the tire pressure. They may be inflated too much. __________________ Eric @ Nitrous Garage BMW WHEELS \| SERVICES \| BLOG \| FACEBOOK email: forums@nitrousgarage.com \| phone: (626) 945-9966 \| web: www.nitrousgarage.com Hours: Monday - Wednesday 8am - 2pm / Thursday - Friday 8am - 5pm
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04-07-2014, 01:55 PM	#3
stevefoster Private Drives: '11 335i coupe SG/Blk Join Date: Aug 2010 Location: Central NJ Posts: 81 iTrader: (0)	Thanks, but I tried that. Already down to 32 front 35 rear. How low can I go? Steve
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04-07-2014, 03:08 PM	#5
stevefoster Private Drives: '11 335i coupe SG/Blk Join Date: Aug 2010 Location: Central NJ Posts: 81 iTrader: (0)	by that I mean that the car feels jumpy, like it's bouncing far more than it should for the road conditions and speed. Actually, it feels pretty much like an out-of-round tire feels, but the faster you go the smoother the ride. And that's not how an out-of-round tire should act. Right? Steve
	0