ok in feb i bought a 05 350z auto... and i got 20 inch 315 on the back tires well come may i had to get new tires.. due to the inside of the rear tires rubbed and blew out... so now in august this is happening again.. heard this is common.. anyone have the specs for the allignment? not just base ones .. and how much this runs? plz help me ty

 

You say they lasted from february till may. This means nothing in terms of tire life. How FAR did you drive till they wore out?

What are your current alignment settings and what suspension components do you have installed?

Between -1 and -2 degrees of "kambri" is common and would minimize tire wear. Whether your wheels will fit within that spec is another story.

Ive seen 4 wheel alignments go for $80 up to $260.

 

I would consider putting the stock wheels with proper tires back on the car. This way you can drive your Z safely until you can afford wheels that are realistic for the Z.

 

With 20" 315-width tires I'm surprised the engine has enough power to spin the wheels fast enough to rack up enough miles to destroy the tires in so little time.

But seriously, I'm not sure what offset your wheels are, but I'm thinking that with 315mm width you probably have to run some pretty serious negative camber to avoid rubbing the fenders, and if that's the case you probably have adjustable camber arms installed. And if that's the case, buy a skinnier tire (285 width or lower should do just fine), and have a good shop adjust that camber back into factory spec. If you do indeed have adjustable camber arms, the shop will probably charge you a bit more because it's additional "work".

 

Meself, i thunkz ur beyund halpz. To more seriously offer you an answer -> Without the specs on the rims, pictures, or anything of actual value nobody can help you. If you actually want help, you need to provide sufficient information to be helped such any suspension modifications, how far you're dropped, and the offset of the rims...preferrably with decent grammar. I don't think anyone here is psychic, though phreak comes close.


sry110 - I run 315s and I am still on the same pair I was last year and I'm only running -2. Whether or not you rub depends heavily on the offset of the rim.

 

+1

With proper toe settings you should be good.