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Post by fingers on Sept 11, 2007 9:40:51 GMT
Hi all
I have a slight vibration at all speeds which gets slightly worse under acceleration although idling down hill will still do it. The car has 20+ year old tyres on as it, but these look fine and hold the correct pressure. Although the steering vibrates with the car I get the feeling it's coming from the prop shaft area.
Would this be logical and what suggestions should I try first. It's just passed it's MOT so wasn't going to change the tyres until next year.
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Post by Warwick (Ozcoupe) on Sept 11, 2007 13:11:17 GMT
If the tyres are more than 20 years old then I assume it has not been driven alot or they would have worn out by now. I also assume that it has therefore spent quite a bit of time idle.
The older a tyre gets, the harder it gets (up to a point) and a tyre that's been sitting under load will develop a flat spot. That's one of the reasons people used to put cars up on blocks for storage. It takes the weight off the springs and the tyres.
So your tyres may look sound from an MOT point of view but be out of round or out of balance or both.
If you can borrow a good set of wheels and tyres (even just a pair) for a trip around the block, that would confirm or eliminate tyres as a problem. If they really are safe enough to use for another year, but they haven't been balanced for a long time, that might be a worthwhile exercise anyway.
A dodgy uni-joint in the tailshaft could give vibration too. Check also to see if you can associate the frequency with road speed.
Warwick.
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Post by Phil Nottingham on Sept 11, 2007 15:49:19 GMT
If the tyres are 20 years old they must be well past it, uni joint is also a suspect
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Post by fingers on Sept 13, 2007 12:43:14 GMT
Thanks guys, I'll change the tyres first, Having look at all the past history i've decide on Cooper lifeliner classic II.
I emailed Sintons who say the pattern has changed to Lifeliner GLS @ £69.68 inc VAT & delivery. I then went onto the Black circle web site and they do both tyres ! Classic for £86.15 fitted and the GLS for £92.83
My dilema is the classic is 205/70/R15S and GLS is 205/70/R15T. Which is the correct one ?
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Deleted
Deleted Member
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Post by Deleted on Sept 13, 2007 15:30:53 GMT
185/15 is the correct one isn't it?
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Post by Phil Nottingham on Sept 13, 2007 15:39:51 GMT
Quite right but on teh assumption that 205/70's are being fitted the T rating has a higher speed rating than the S so if the car is going to be driven at high legal speeds a lot then this is the one to go for - I would. If its only occasional use in the dry at low speeds then S rating is adequate. Both are approved, its just horses for courses
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Post by fingers on Sept 13, 2007 19:24:55 GMT
Thanks,
The S rating it is then !
Who drives at high speed (legal) in these's things anyway !
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Deleted
Deleted Member
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Post by Deleted on Sept 13, 2007 19:40:11 GMT
Brave people
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theroveringmember
Rover Fanatic
P5B Saloon - P4 110 - P6B x2 - 2200TC - 2000TC (S1) 2000SC........How Many Is Too Many?
Posts: 446
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Post by theroveringmember on Sept 14, 2007 4:24:33 GMT
Anyone with one, I would have thought. They're more than capable of it. Just hold the steering wheel tighter.
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Post by Welsh Warlock on Sept 15, 2007 0:22:41 GMT
I had a really bad vibration from the car after changing the engine for a recon unit.
I changed the gearbox and the gearbox mount (it has separated the rubber from the steel) and the vibration has gone.
I would check the propshaft joints (had one go on me a while ago and used a repair kit to good effect) and while under the car check to see that the gearbox mounting hasn't separated.
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