Had the rears replace today, thinking that the fronts just needed to be rebalanced to get rid of a bid of vibration. Was horrified to find out that the innermost inch of tread on both front tyres has worn away to almost nothing, leaving the rest of the tread looking like new. Any ideas what could have caused this?

Is the car lowered, bigger wheels, sagging springs?

The camber on the front is not adjustable but Harve is doing a correction kit ;)

She has not been lowered and only has the standard alloys. I suppose that sagging springs could be an issue, but how do you tell. They look OK to me.

Worn upper links can cause this too I think.

 

Does anyone know how to check the ride height?

If it is one both fronts, I would say definately get a 4 wheel test down at a proper 4 wheel alignment centre. If it is just the front left, this is normal. I have the same problem. Harve's kit sorts this problem out. Or, if you are rich, you could go for the rose jointed luvely jubly jobies.

yup, sounds like the usual "too much negative camber" problem!

 

as suggested, get a 4 wheel alignment done, if it is out of spec, you will need a camber correction kit or after market adjustable upper arms

Same On Mine[1990 Jap Tt]-o/s/f Tyres Foooked On Inner Edge,took It To Work Today And Done An Opto,trouble Is Our Machine Only Has Uk Specs,so Set Front And Rear Toe But Front Camber Showing

Neg 8 Degrees!!-this Is Defo The Problem,and No Mines Not Lowered

Putting It Down To 14 Year Old Springs! ;)

8 degrees?!?!?!?!? you sure?? :eek: :eek: :eek:

8 degrees?!?!?!?!? you sure?? :eek: :eek: :eek:

YEP BUT REMEMBER GOT NO SPECS FOR MY CAR-GONNA FIND OUT THE JAP SPECS AND COMPARE ;)

8 degrees is impossible without something serious wrong. The wheel would look like its falling off. You need to check for worn top link bushes or bottom ball joint. You would feel the play when its jacked up on the top link bushes. New NISMO bushes cost about £160 for a full set of 8 from Middlehurst. Plus a 4 wheel alignment done with worn bushes present would be useless. You can crudely decide how much sag your springs have by seeing how many fingers each side between the top of the tyre and the wheel arch. On mine there is an inch or more clearance to the wheel arch top so 2 or 3 fingers worth. New top link bushes fitted recently and new tyres wearing fine so far.

 

Lowered or well sagged springs might leave the top of the tyre level with the wheel arch top.

8 degrees is impossible without something serious wrong. The wheel would look like its falling off. You need to check for worn top link bushes or bottom ball joint. You would feel the play when its jacked up on the top link bushes. New NISMO bushes cost about £160 for a full set of 8 from Middlehurst. Plus a 4 wheel alignment done with worn bushes present would be useless. You can crudely decide how much sag your springs have by seeing how many fingers each side between the top of the tyre and the wheel arch. On mine there is an inch or more clearance to the wheel arch top so 2 or 3 fingers worth. New top link bushes fitted recently and new tyres wearing fine so far.

 

Lowered or well sagged springs might leave the top of the tyre level with the wheel arch top.

WILLIEO,I DON'T BELEIVE 8DEGREES EITHER-U COULD TELL THAT BY LOOKING AT THE WHEELS,IV'E GOT ABOUT AN INCH AND A QUARTER BETWEEN TYRE AND WING.THE MANS COMING TO CALIBRATE THE MACHINE,SO WILL DO ANOTHER CHECK AFTER THAT :)

its not set to mm is it. some machines also readout in mm

 

-8mm camber would be far more realistic!!

its not set to mm is it. some machines also readout in mm

 

-8mm camber would be far more realistic!!

DON'T MATTER ON THIS MACHINE IT GIVES BOTH-MAN CAME TODAY-SAID IT WAS FOOOOKED!!,ASKED IF WE'D BEEN PLAYING FOOTBALL WITH THE SENSORS-CHEEKY SOD! :smw: