Nord14341

I just bought a 2013 GS 350 RWD with Bridgestone Turanza ER 33 tires (235/45R18 94Y). Very happy with the car other than I'm getting some vibration from the tires at higher speeds.....starts at 75 mph. The car also starts to feel choppy at this same speed........75 to 80 mph. Seems like it's the tires since the car is straight as an arrow and the wheels feel very balanced at all other speeds.

I test drove a car with Dunlop tires prior to buying my car and the Dunlops were noticeably worse........I felt vibration and choppiness right away regardless of speed.

Anyone having this same issue? Is it a suspension issue or a tire issue? Anyone try another tire brand or tire type? The Bridgestone Potenza tires on my IS 250 rode perfect at all speeds. I know a lot of people stand by Michelin tires......Primacy or Pilot?

Any help would be appreciated.

Rexus300

iTrader: (1)

I had same issue with bridgestone el400 on my fsport version exactly how you describe it. I switched out to continental all season and my ride is smooth and no choppiness. It's those junk dunlop and Bridgestone. Get nice Michelin or continental tires.

dseag2

I have no vibration issues with my Dunlops on my F-Sport. Must be an issue with the non-F-Sport.

Shadow0039

Agreed. Bridgestone known to hv harder ride. Changed mine to continental csc5 .. better. Tire pressure also play a part.

faifai83

What is your tire pressure cold?

Nord14341

Thanks for the response. I did some checking on-line and other drivers have had issues with Bridgestone Turanza tires also. I don't mind swapping out the tires as long as I get the right tire for the car with some noticeable improvement. Do you know the exact Continental tires you bought?

Nord14341

I checked the tire pressure several times. Adjusted to 34 lbs. cold on all 4 tires. The display shows all 4 at exactly that pressure.........they move up to 36 or 37 warm. The ride smooths out when the tires are warm, but I still feel a little vibration and choppiness......the car does not feel planted to the road?

Nord14341

Thanks for the response. Sounds like Continental might be my tire.

Rexus300

iTrader: (1)

I have the continental contiprocontact tires. They are nice and smooth tires but give up some of the handling feel that you get with the Bridgestones. If I were you, I would take a look at the Continental DWS tires and look at the reviews on tirerack.com. Many lexus owners are happy with the continentals. They are softer tires but good ride, traction, and longevity.

Vasili

I have Dunlops on my Luxury GS (non-F sport) but no choppiness.

So far, sounds like a tire thing, not a non-F-Sport issue.

Rexus300

iTrader: (1)

Continental DWS in size 245/40/19
or
Michelin Pilot Sport A/S in size 245/40/19
or
Continental Contipro Contact in size 235/45/19
or
Pirelli P Zero Nero A/S in Size 245/40/19

rjm

I have Dunlops on my 2013 GS 350 RWD non-Sport and they are fine at all speeds up to 90 mph. No vibration or choppiness at all. I would get the tires dynamically balanced and see if that solves the problem.

Rexus300

iTrader: (1)

Not dynamically balance. Its road force balancing on the hunter road force machines that are far superior than the older simple dynamic balancers. Lexus dealers have them.

Nord14341

Thanks to all who responded to my question once again. I'll talk to the dealership about road force balancing. Also thanks for the exact tire brands/models.

I had the same issue tonight......the car just starts to "dance" on the road at higher speeds.......especially bad when the road is older and a little bumpy......the car loses it's composure and I just don't feel confident at speeds over 75. I'm on the same highway for the past 15 years and never had an issue with IS 250, BMW 3 series, VW SUV, Mazda, etc. Hopefully I can get is resolved....car is perfect for me otherwise.

Rexus300

iTrader: (1)

Don't worry it happened to me too. I also had this issue with a BMW 5 series at that speed too. Get it road forced balance first. However those Bridgestones have firm sidewalls and they are rated poorly on tirerack.com. The car feels 90% smoother now with the new tires then it did with the Bridgestones. So its a big difference