i'm in need of some help here, i've tried everything i can think of and the vibration won't go away. it usually happens between 60 - 75 mph. heres a list of mods i've done to my car. i've gotten an alignment, three different kinds of balancings (road force), i even machined my rotors and put new brake pads on.

6 months old tokico d-spec adjustable shocks
6 months old eibach
new spc full camber kit
new whiteline bushings for front lower control arm
new tsw 20" jaramas staggered 20x8.5 20x10
new nexen n3000 tires 245/35/20 285/30/20
new hub rings

please help!!!!!!

can tires cause vibrations even if they are new and been balanced perfectly

 

Ive seen some crappy tires have vibration issues but mostly after they sit for a couple days and flat spot. but even then it goes away after a minute of driving. I hate to say it too but Ive seen more vibration complaints from have a 35 profile tire on a car then anything else. Id say its just the nature of the beast really. but then again I could be wrong.

 

well it vibrates even when i drive for a long time but it sometimes fluctuates how hard the vibration is.

 

do you have spacers?

 

check the driveshaft

 

i don't have spacers

 

Is there dive shaft issues with these cars? Just wondering since u made that comment.

 

my car is in the dearlership so hopefully they can find out whats wrong

 

Generally, when you have vibrations around those speeds, it's due to the tires being out of balance. You said you had them road forced, were they match mounted as well? Road force balancing is really just a way to tell if your tire is a little out of round or has an excessive heavy spot. It's really only half of the equation if done properly, the second half of that would be match mounting, which would be rotating the tire on the wheel so that the assembly as a whole balances out a lot better. Most road force balancing machines that I've come across give suggestions as to how far the tire would need to be rotated to get the best balance. On the flip side also, next time you get a set of tires, you might want to step up a bit, Nexen's aren't exactly the best quality in tires IMO, and I've seen many of them being out of round in the 6 years I've been working with tires. Gl with figuring it out!

 

yeah i didn't get it matched mounted but i will check that out. i got the nexan because i don't race or drive hard on corners and this is a daily driver so i wanted something that will last longer than 15k miles, my last set of tires only lasted 6 months.

 

Exactly what was imbalance per side of tires in grams and exactly how many pounds of radial force imbalance did each tire have?

Without exact numbers impossible to predict over inet!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Nissan has a 7 pound maximum radial force imbalance spec per tire and all tire/wheel combos should require less than 10 grams per side to bring into PERFECT 0/0 gram balance.

 

the dealership was able to get it real close, its still just a bit shaky but a hundred times better

 

did they tell you what they did to get it so close .??

If so tell us . =)

 

The problem with a tire wheel combo that requires much weight to bring into perfect balance is their is obviously something seriously wrong with wheel or tire or some of each.

When a new wheel or tire has problems it never get BETTER only worse so you are back rebalancing every 1,000 miles to keep the vibrations under control.

Nissan has a 7 pound maximum radial force imbalance spec per tire and all tire/wheel combos should require less than 10 grams per side to bring into PERFECT 0/0 gram balance.

 

I dont know if I agree with that 7lb/10g max. I balanced my own tires and with a hunter roadforce machine, I had 2 that were over 20lbs. I even have nexen n3000 tires. they never vibrate unless the car sits for a long time and they flat spot. granted I have the factory 215/55/17 tire size but still, that and the weight shouldnt matter as long as it balances out. I have well over 10g of weight on all my wheels, probably 40-50g of weight. its pretty normal to have that much weight. the only time ive ever seen it be a problem is with 5oz of weights in which case the tire is fahked from a huge heavy spot, or the wheels severely bent. see if they are leaving smart balance on. I know its a feature on hunter machines where it will get it close enough to help save time while working on a car. we had problems with that alot on our large SUVs, they would come back all the time for just being 10g out and we later found out that the stupid feature was enabled. it would just say the wheel is ok instead of 1g or 2g out.