Toddy

iTrader: (5)

I just replaced my Pirelli P6 Four seasons with Yokohama YK580 all season. The tires seemed to be an upgrade at first but now that I have put a couple hundred miles the car seems to be a little squirrely in the turns at highway speeds. I did not notice this with the Pirellis. My suspension is definately worn out and in need of replacing but the car did not seem this loose before. I'll be upgrading the suspension soon but I have 30 days to return the tires if I do not like them. Any thoughts?

TLtrigirl

iTrader: (1)

tire pressure? alignment?

Toddy

iTrader: (5)

TIre pressure is at 45 and just got an alignment

TLtrigirl

iTrader: (1)

45 psi?! that's a little high isn't it? what size tires are you running? i'm not sure about the yokohama's (not familiar with their ride quality). have you tried playing with the tire pressure? say getting it below 40. OEM is 32 psi for AT. and 35/32 for MT. i run my conti's at +3 psi at all corners. that might be your problem with the squirrely feel. you have a smaller patch of rubber on the road with really high PSI.

Toddy

iTrader: (5)

I've always ran 42 psi on the pirellis. They are 235/45/17 and the max pressure is 50psi. I haven't adjust the pressures since the tire shop installed the tires.

The car fights me when I go into a turn especially on the highway at 75 which annoys me the most.

TheDingo

45psi at cold temp or hot? If you're putting them at 45psi when cold, they're surely warming up to near 50psi. This is probably overkill and you should take some pressure out of the tire.

Is it possible that you're pushing the car harder than you normally would to get a feel for the new tires? Some drivers do this and then are surprised when the car acts in a different way.

Elaborate a bit further on the car "getting loose". I'm assuming that the ass end is trying to come around on you? Getting excessive oversteer or understeer?

If you're getting excessive oversteer or understeer, this could be a direct result of the psi in your tires that you are driving on. Personally, I would sort the air pressure in the tire first before you consider changing parts.

Toddy

iTrader: (5)

cold temp since they did it when they installed them. I don't think I am driving the car any harder than usual. I commute 67 miles round trip to work. I have noticed some excessive understeer on sharper turns at lower speeds, but on the highway the car is wobbly and even the slightest increase in turn when I turn the wheel more has become exaggerated making me feel like the back end isn't following the front end. I know I need new shocks since they are original with 150k.

Ill try dropping the pressure down tonite 35/32 (M/T) and see if that helps on my commute over the next few days.

Luger

Toddy,

I went from Yoke W4s to the contis and I had the same issue with the wandering feeling. I adjusted the pressure as Tl girl suggested and after about 2 weeks the tires felt better. They will not corner like your previous tires but it does feel better as they break in and you get used to them esp. in higher speed conering manuevers.

csmeance

Your tire pressure is WAY to high! Stick with 35PSI cold and you'll notice a HUGE improvement in ride quality and as well handling. With a tire at a higher pressure, less of the tire is making contact with the road and it'll be more prone to skid and cause understeer. As well with less road contact the tire won't be gripping effectively causing that squirrel feeling your getting!

Just remember MAX PSI is meant not for keeping air in the tire while driving, it's for shops while mounting tires or for extreme conditions such as heavy towing or when the tire is being pushed past or near MAX WEIGHT CAPACITY!

Toddy

iTrader: (5)

Sweet. Ill make the adjustments tonitewhen i get home from work.

vietxquangstah

iTrader: (7)

45 psi wow... when you open your driver side door, on the side of the door it even tells you the recommended tire pressure. usually its 32-35 depending if its summer or winter.

when I go to discount tire to buy tires they even print on the receipt what PSI they aired the tires to. and its always:

front - 32 psi
rear - 32 psi

over 40 psi is way too much, let alone 45. i would imagine ride would feel a little bumpy or sensitive.

lower your psi to about ~35 all around and i bet you might even gain 1-3MPG driving back and forth from work!

Toddy

iTrader: (5)

Just got back from a trip. I check my pressures before I left. The fronts were set at 37 and the rears at 42. Dropped them down to what you guys suggested and I definately notice a difference in ride quality. The squirreliness definately went away but these tires do have a softer sidewall than the Pirellis did. I cannot take the turns as tight as I could before. But you gotta compromise and these are definately better than the Pirellis.

TLtrigirl

iTrader: (1)

you have a 6MT. your psi should be at 35/32 (fr/rr). you can play with it by 1-3 psi to see how you like it. i have 18's on my car with the DWS 235/40/18. like i said before i'm +2-3 psi at each corner. for the stock size 17's you may want to keep it at specs or +1 or 2. it'll help firm up the tires without the squirrels.

Toddy

iTrader: (5)

Ya Im at 35/32 cold now. Next I need to play with the suspension to get rid of the body roll.

TLtrigirl

iTrader: (1)

new suspension will help...RSB will help a lot (there is a group buy going on with this one).