1991 240sx: passenger front tire hit by semi

Forum for Nissan wheel fitment, tire selection, suspension setup and brake discussions.
vancouverbc
Posts: 3197
Joined: Thu Oct 30, 2003 1:30 am
Car: 1991 240sx

Post

A semi merged into me and slapped my passenger front tire. This happened about 10k miles ago. I just noticed that the inside edge of both my front tires have warn out to point that my tires are destroyed.

The camber is .75 inches on the wheel that got hit and about .5 inches on the opposite tire. Ill measure the toe tomorrow.

the ball joint on the tire that got hit looks like this so i'll replace both lower arms as i can get both for $115

i couldnt see anything else that looked wrong.

How many degrees is .5 inches?

the arm im buying includes the ball joint but i was thinking of burning the current ball joint to get it out easier. does that make sense. thanks



vancouverbc
Posts: 3197
Joined: Thu Oct 30, 2003 1:30 am
Car: 1991 240sx

Post

I was measuring the camber across the length of the stock rim which is around 17 inches.

inverse tan(.75 inches/17inches)=degrees camber

i dont remember what tan is.

the spec is 1.5 degrees and my camber is close to 3.

vancouverbc
Posts: 3197
Joined: Thu Oct 30, 2003 1:30 am
Car: 1991 240sx

Post

http://www.calculator.org/jcalc98.html

you can get inverse tan with the above calculator

1.enter .75/17 inches2shift key3.tan key

so i have a camber of 2.5 degrees.

the rim bulges in the middle so you have to take a 2 inch block on your leveland calculate gap minus the block width.

Or paste this into google search and google will give you the answer:

atan(0.75/17) to degrees
Modified by vancouverbc at 8:34 PM 4/30/2008

vancouverbc
Posts: 3197
Joined: Thu Oct 30, 2003 1:30 am
Car: 1991 240sx

Post

the camber is actually around 2.5 on both my front tires(spec is around 1.5)

tthe front tires are toe-out by 20mm . should be toe-in by a small amount.







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