Steering shudder

Submitted: Saturday, Mar 13, 2004 at 16:20
ThreadID: 11217 Views:1682 Replies:3 FollowUps:1
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We have a 100 series turbo diesel landcruiser - still using the factory tyres but not original. 80,000 kms and have a steering shudder at about 100-110kms per hour. Have had the wheels rebalanced and the alignment checked. Mostly highway driving - a bit off-road but nothing very violent. Any ideas anybody ?


Bob and Joëlle
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Reply By: Member - Noel C (VIC) - Saturday, Mar 13, 2004 at 16:26

Saturday, Mar 13, 2004 at 16:26
Check the brake disc for warping. If you've crossed streams with hot discs and pads the warppng effect can cause considerable shudder.
AnswerID: 50187

Follow Up By: Bob et Joëlle - Saturday, Mar 13, 2004 at 16:41

Saturday, Mar 13, 2004 at 16:41
Thanks Noel

The problem doesn't appear under brakes - only travelling in a nice straight line on the freeway ! Will check it out though.

B &J
FollowupID: 312006

Reply By: Kev - (Cairns,QLD) - Sunday, Mar 14, 2004 at 21:06

Sunday, Mar 14, 2004 at 21:06
Sometimes tyres change to an egg shape instead of being perfectly round when they have done a few km.
This will cause a wobble at speeds. Why this can happen i dont know.

The factory tyres are not thre greatest tyres around & considering they are already at 80,000km id suggest a new set would be on the cards.

If not wanting to renew your tyres try borrowing a set of a mate maybe & see if the problem is still there.

AnswerID: 50326

Reply By: bob - Sunday, Mar 14, 2004 at 21:42

Sunday, Mar 14, 2004 at 21:42
I had an FJ40 years ago. Same problem (but it was at 80kph+). Well known brand of tyres, supposedly balanced, were 6mm out of round when checked with a dial indicator while vehicle was jacked up. Tyre dealer took some convincing but replaced them. Problem fixed!
Anything more than 2-3mm out of round will cause havoc at high speed.
You don't need a dial indicator. Jack up vehicle until wheel just clears ground, spin wheel by hand and observe gap between tyre and ground. $200 tyre - expect perfection!!!
AnswerID: 50330

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