My coupe is lowered on H-tech 350z springs with 15mm ichiba wheel spacers on the front and 20mm ones on the back. I now have oversteer during low speed cornering. Does anyone else have this problem?

I searched the forums and there are numerous threads on adjustable sway bars. Would adding these help balance out the handling?

 

you can add the swaybar and set the front/rear med/med and see if
that helps. should.

 

Why such wide wheel spacers? That offset is pretty big.

 

The spacers fill out the wheel wells without any rubbing. I didn't want to spend the extra cash for a new set of wheels.

 

Swaybars should help a lot. I'm no expert, but you may also want to check out your alignment. Theoretically, spacers are not suppose to change the alignment. However, when I had my 15 mm spacers in the front, it did make my camber a little bit more negative for some reason. It could be that your front got more negative camber than the rear from the spacers. I guess it wouldn't hurt to take it to an alignment shop to find out your angles (usually they do that for free) before you get the aftermarket sways.

 

spacers DO affect alignment. Any time you move your wheels further away from the axis of rotation of the suspension, the torque applied by the wheels changes thus changing the force required to balance that by the springs. This will cause a slight change in ride height and camber, the camber being the only thing that will probably be noticeable

 

That would make sense then. The front wheel was +35, added a 15 mm spacer and ended up at +20 on an 8.5" wide wheel. The camber increased as much as 0.25 degrees on both sides, which in turn must have made for more oversteer.

 

The problem with spacers that big is that you increase your track width and your scrub radius. Basically you're not getting nearly enough tire towards the inside of your wheel well as you should. The right solution would be a wider wheel and tire with the proper offset.

And stiffer rear sways tend to increase oversteer if I'm not mistaken. Be careful if you are going to go that route. Make sure to stiffen your front more than your rear.

 

Sway bars would definitely help to balance out your car although there are many other factors. Keeping it simply, I would run a softer rate in the rear compared to the fronts. You could also add just a tad of negative camber in the rear would help.

 

I'm taking off the front spacers and adding some stillen swars bars on tuesday. Worst comes to worst, there will be two sets of spacers for sale in the marketplace.