Hi Robert:
When you say rotating, do you mean left to right swap, or back to front?
If this vibration came on suddenly then perhaps you hit a pothole or foreign
object and bent a rim. Try swapping with your spare one at a time until you
find the guilty rim. Of course, your rim may be the worst of the lot, but
jacking up one point of the car at a time and spinning the wheel can tell you
something too.
I was driven half mad with similar situation that was only resolved after I
sent the rims off for straightening.
It is surprising how little a bend can cause this highway vibration. One of my
nice newly straightened rims got a bend on the inside edge during tire
installation. Less than an eighth of an inch bend in just the outer edge of
the rim, seemingly not near affecting the tire bead, but the vibration started
to come right back. Fortunately a bit of thumping with a hammer (on the tire
technician if I had really followed my feelings) put things right and the
vibration went away. Now I watch potholes (in Montreal that's a full-time job)
quite carefully.
Cheers,
Mark
________________________________
From: owner-triumphs@autox.team.net on behalf of robertrudolphi@netscape.net
Sent: Mon 05/06/2006 8:57 AM
To: triumphs@autox.team.net
Subject: [TR] TR6 front end vibration
Hello all,
I have started getting a severe vibration that comes through the steering
wheel of my 74 TR6. I get virtually no vibration under 50 MPH but it is really
bad between 60 and 70. I have tried rotating the tires and it does not seem to
make a difference. I have older Vredsetein tires 185/15 that I just had
re-balanced and that made no difference. I have rotated all the tires and that
made no difference. I did inspect all 4 tires and see no evidence of defects,
I used to sell tires so i know what to look for. I guess it is possible to
have numerous internal ply separations on the tires over the winter. Some
things I have been thinking about doing;
Take wheels and tires to Ye old Wheel shop to see if wheels out of round. Only
1/2 hour from my home.
Buy new tires.
Inspect something in the front end to see if that could be issue, but what
should I look at?
Any other suggestions
Thank You
Robert
Robert Rudolphi
1974 TR6
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