G'day John
I tend to look at things in my cars quite simply.
If my tyres are worm equally in the middle all the way around I know the
tyres are over inflated. If the wear is equal on the outside of the
tread pattern all the way around the tyres are under inflated.
Providing the toe-in, camber etc is correct the tyre wear should be the
same all round.
What pressure are you using? May be it's because you are using tires
when the Austin manual specifies tyres?
Regards
Patrick Quinn
Sydney, Australia
-----Original Message-----
From: owner-healeys@autox.team.net [mailto:owner-healeys@autox.team.net]
On Behalf Of John Soderling
Sent: Thursday, 21 April 2005 12:29 PM
To: Healey List
Subject: Manual Front Wheel Alignment Question
I have a question regarding wheel alignment specs.
Today I did a manual check of my Healey's front wheel alignment in my
garage.
The wheels/steering were pointing straight forward. My tires tread has
a center grove. Here is the procedure I used.
1.. Using a plumb-bob hung from the tire tread center grove, I marked
points on the garage floor at the front and rear centers of both front
tires. The distance between the front and rear-of-tire measurements was
25.3", my tire diameter.
2.. I then measured the distance between the front-of-tire points
(front
distance) and the rear-of-tire points (rear distance).
3.. I then subtracted the front distance from the rear distance which
turned out to be 5/16".
4.. I repeated steps 1. through 3. after rolling the car about 1/2 the
tire circumference forward to average any tire/wheel untrueness. The
difference was again 5/16".
5.. I also similarly measured distances at the front and rear points
of the wire wheel rim edges and calculated the difference, which turned
out to a toe-in of 3/16". The distance between the front and rear wheel
rim edge points was 16" (as contrast 25.3" distance for the 5/16" toe-in
measurement).
So my question is: when the Workshop Manual says the toe-in should be
1/16", what is the distance they use between the front and rear measured
points?
Tire diameter? Wheel diameter? Other?
Thanks for any help.
Vrooom vrooom,
John
100-Six Erika the Red
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