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YOUR RESEARCHSuspension issue ???
Leading reported evidence
Check tomorrow
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Leading evidence: 'Check tomorrow' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check drop links, tie rods and control arms as well' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
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They were only used for autocross, but developed a similar wear pattern because of the lack of negative camber on the fronts.
Check drop links, tie rods and control arms as well
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Suggestion · Original poster
Gonna put it in the air and check the drop links, tie rods and control arms as well for wear
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Suggestion · Original poster
I need to figure out if I need to replace some parts, and if so, which parts need replacing
Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.
17 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Rennlist: 1 discussions
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I noticed that my car has a slight drift to the right on the freeway. I would not call it necessarily pulling, but it does not track straight.
I have tried it on several different roads and in different lanes to eliminate any road banking or crowning.
I recently had a alignment done and the castor is slightly different,7.9 vs 8.0
Camber is matched on each side and no toe in the front and a touch in the back. Camber is -.5 in the front and -1.6 in the back
There is also a vibration in the front and steering wheel on most roads starting around 80 mph
On smooth asphalt it is less pronounced, but still there.
I swapped out a different front wheels/tires and it still drifts to the right and still had a vibration starting around 80 mph
Any ideas how to correct the drift?
The right front tire looks like some odd wear
These tires have only 1800 miles on them. Of course, that included 1 AX and 2 track days (~180 track miles)
the right side of the tire is the outside
That center tread wear is just bizarre...I have no idea how it could wear like that, but it looks like the outboard side of the tire is worn more than the inside...it's hard to believe there's any negative camber on that wheel...
Iit is a DD and they are street tires, Direzza Star Spec
Kind of, weekend before last was 2 track days.
It has as much neg camber as it can get with stock suspension, -.5 deg on the front
In any case, I am getting the alignment checked.
I need to figure out if I need to replace some parts, and if so, which parts need replacing
My fronts on the Miata used to get like that. I did an alignment that took out some of the understeer and softened the rear sway one spot and I have much more regular wear across the tread on the front. Not sure how much push your are getting but that might be the wear culprit.
Jay,
I had the same issue this year with the Dunlop Direzza Star Spec ZII's.
They were only used for autocross, but developed a similar wear pattern because of the lack of negative camber on the fronts.
When you drop some tire pressure for AX, this center pattern tends to wear out like that.
Do you have another set of wheels/tires to put on the car? My best guess is that your tires are shot and the center portion is catching on portions of the road and pulling to the right. Our AX season tended to have a bunch of left handed turns that promoted scrubbing in the second half of the year. My right front wore out much quicker than my left front, just based on track setup.
You actually have plenty of tread left, but that center portion is going to cause the strange feeling on the road/highway.
I found some success in swapping the tire mounts left/right. Have a tire shop swap the mounting on the wheels. The tread evened out nicely and I made it through the whole season.
Those look like you just got off of the track today. If your alignment is good, I'm guessing you'll have to drive on them for a little bit to get the wear back even.
-Jason
LOL Maybe 250 miles since leaving the track.
I'm having the alignment checked tomorrow
Gonna put it in the air and check the drop links, tie rods and control arms as well for wear
The drifting to the right started before I went to the track and also had it aligned before i went to the track
