Front tyre wear -inside edges

[wrenlea]

I know this is not the first post on this topic but I have read them all and still cannot fathom the differences of these figures..

 

Hence I would very much appreciate some help as to whether there is anything I can do to stop ruining my tyres after some 5000 miles.

 

I have a JZA80 TT which has now eaten three sets of front tyres

 

Last year I had everything checked and adjusted and thought that was it......

However each front tyre has now virtually no tread for an inch plus all the way round the inner edge. (235 40 17) (AGAIN) the rest of the tyre has 3 or 4 mm's of tread

 

I have dug out the report from last years service and it is as follows:-

 

Caster left was 3degrees o9' adjusted to 3degrees 08'

Caster Right was 3degrees 29' adjusted to 3degrees 21'

 

Camber Left was -0degrees 12' adjusted to -0degrees 01'

Camber Right was -0degrees 37' adjusted to -0degrees 32'

 

Toe Left was 0degrees 14' adjusted to 0degrees 01'

Right was 0degrees 28' adjusted to -0degrees 01'

 

The rear tyres have worn fine and these were adjusted to

 

Camber Left -1degree 13'

Right -2degrees 18'

 

Toe Left 0degrees 07'

Right 0degrees 12'

 

Thrust angle was 0degrees adjusted to -0degrees 02'

 

From the quoted spec these all seem within tolerance but if someone can point me to an answer I will be eternally grateful.

I have avoided speed bumps at anything but a crawl and have not kerbed it so hopefully nothing should have changed much?

 

Peter

[Tricky-Ricky]

I had similar wear from to much toe in.

[supra_surj]

Call tony at wheels in motion or go to http://www.wheels-inmotion.co.uk he's the don daddy on geometry mate.

[wrenlea]

thanks for the replies

My toe in looks pretty much in the middle (or was)

I will certainly look at the wheels inmotion site tonight

Watford is not far from me as luck would have it.

 

Peter

[r1george]

Hi,

Do you reverse the car into parking bays/spaces alot??

 

My TT has the same wear and the tyre company I use said on cars with power steering the inside edges of the front tyre wear rapidly because you tend to hold the steering on full lock when reversing into parking bays and it drags/scuffs the inside edge of the tyre causing excess wear.

Is it true? I don't know but it sound reasonable.

 

Carl:)

[wrenlea]

Interesting

I cannot see how very slow movement could cause such wear.

HOWEVER where I park at work is a real pain and I am forever having to manoeuvre in tight spaces due to defective and/or unauthorised parking by others.

I try to move the car while steering to protect the steering mechanisms but I have not thought of this wearing the tyres.

 

Hmm an expense claim comes to mind.......

 

Peter

[mattanna]

as you ar ein London take it to Tony Bones at wheels in motion, he is in Watford, he will get your alignment spot on, no one better, your car seems badly toed in

check http://www.wheels-inmotion.co.uk here is a previous thread, had mine done last week, difference is amazing, i had inside front wear badly, car was set up like a drift car, only thing is it wasn't supposed to be, that is also why i lost it recently!!

http://www.mkivsupra.net/vbb/showthread.php?t=110275&highlight=wheel+alignment sorry seen Surj beat me to it!!

[supra_surj]

[wrenlea]

I thought I would post an update after I followed the advice to contact Tony, at Wheels in Motion.

 

First of all he gave me LOADS of advice on settings and then assumed I was going to get the car set up somewhere else! Very impressive.

 

Having ruined several tyres I was cetainly going to get him to do the work.

 

Went to where he is now, near Hemel Hempstead (although he is moving soon) in June and he spent an hour sorting out my car which he reckoned, despite my report from a year ago, was ALL WRONG . I had just bought two new front tyres and depressingly he pointed out the rns tyre had nearly gone on the near edge as it was so out of alignment.

 

So back from Wheels in motion and I had to buy two new rear tyres as well

 

Then got the car BPU'd at Whifbitz (brilliant) and have since driven over 4,100 miles......... ( @ 2,000 of which would have certainly " exercised" the tyres)

 

So, the result......... (just had the free check/fine tune)

 

Front tyres (8.5 mm's of tread when new) now have 7.3 mm's

Rear tyres (8.5 mm's of tread when new) now have around 6 mm's of tread

All totally even wear.

 

Thus if you are having problems with wheel alignment, Tony is THE guy to go to.

It seems to be more of an art than technical with him and the results speak for themselves.

 

Marks out of 10.... 11