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Did I imagine this?

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Old 11 September 2009, 02:29 PM
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Nielsen
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Default Did I imagine this?

Hi, I'm new to this site.
I have an 03 WRX.
Today whilst out driving, I was going uphill at around 40 mph, dry road, good tyres, I thought the back end stepped out and was convinced I had a puncture so I stopped and found I didn't.
Hasn't done it since but I drove home cautiouslly.
Old 11 September 2009, 03:03 PM
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whats tyres you running?

I drove one with a recently with a new'ish set of "dodgy" falkens and it was literally like having a flat tyre, the rear was all over the place when on throttle. Got the Geo and everything checked, all fine so we were all scratching our heads, changed to some Contis...problem solved! Well weird...
Old 11 September 2009, 03:31 PM
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Nielsen
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Got Good Year Eagle F1s all round, though had a brand new one fitted to offside rear this week.
Old 11 September 2009, 03:39 PM
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It might have been the road surface. There's a bit of road near me that I use every day opposite a gypsy camp which has some almost invisible ripples. I wonder if they have been caused by an HGV going over the road when the blacktop was a bit soft.

The car definately "shimmies" as I guess it follows the ruts, frightened the pants off me the first time !! It was terrible on my 19" wheels but feels a lot better on my 18" rims shod with Toyo's

Just a thought..

Shaun
Old 11 September 2009, 04:08 PM
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Nielsen
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Thanks Shaun.
It was near a new housing development, so a worn road surface be the culprit.
I did hear chippings flying up moments earlier.
Old 11 September 2009, 04:24 PM
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Midlife......
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http://homepage.ntlworld.com/robert....tramlining.pdf

Is the technical term tramlining ?

Shaun
Old 11 September 2009, 04:32 PM
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Nielsen
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Could be..sheds a whole new light on things..

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Old 11 September 2009, 04:57 PM
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You changed one tyre on a 4wd car?????
Were they all recently changed?
General consensus is that they should all be changed at the same time to keep the circumferences all the same.
Old 11 September 2009, 05:09 PM
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Mark'sWRX
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Tyres on the same axle should be changed together. A difference of 2mm is ok between front and rear.

If you changed one side, what is the other side like? If it less than 6mm, I'd get it changed (you can always keep it as a spare) otherwise the diff will struggle to run the wheels at slightly different speeds and could explain your problem.

I changed all 4 tyres when I had a puncture in 1 when half worn. Real expensive pain in the a$$. Kept the other 3 as spares (just in case).
Old 11 September 2009, 06:01 PM
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Nielsen
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Thanks guys.
Yes changed only one due to a puncture, the other rear has considerably less tread so I'll get it sorted asap.And cheers Spender, that makes good sense, bang goes £270 on monday lol, but I'll feel happier and safer.
Old 11 September 2009, 07:00 PM
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£270 for a tyre ??

Shaun
Old 11 September 2009, 07:28 PM
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Nielsen
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no £90..may as well get the other 3 changed..a bit less if I haggle..
Old 11 September 2009, 08:01 PM
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Shaun
Old 12 September 2009, 08:35 AM
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How many miles have you done on the new one? When I had F1's on my old wheels I seem to remember experiencing something similar the first time I really pushed the brake down, it didn't do it again though. I thought they were great tyres. Try doing a few more miles down different roads to see if it still happens before getting the cash out.
Old 12 September 2009, 09:12 AM
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Nielsen
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The new one's done around 100 miles,there's considerablly less tread on the other 3, but they're legal.
Old 12 September 2009, 10:43 AM
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£200 will get you a large Toyo R888.....

dunx

P.S. New tyres come with a layer of release compound from the moulding process, but I would only expect that to be an issue in the wet for the first 50 or so miles.
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