Wasn't sure if this was a question for "discussion" or "technical" but...
what sort of effect will having two different tyres on the rear left and rear right have. Obviously this would not be recommended, but I have this situation on my VW Passat, and my handling feels a bit strange and wondered if this was likely to be the cause? I'm told one is a sportier tyre and one is standard (although they're the same manufacturer)
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Whats the difference between the two tyres,please specify which tyre sizes you have on same axle!
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Steve
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I don't know anything about tyres but one is dunlop sport 200e (and has 200 A and A on the side wall) and the other is Dunlop Sport 07 (and has a width of 205 I think).
If that's not enough info let me know, as I'm trying to read it with a small torch!!
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actually I think the 2nd might be Dunlop Sport 01 (01's in a fancy font!)
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Plenty of bangers run around with a different tyre at each corner,not illegal but undesirable IMO.As the tyres will have different degreees of grip,flex,water removal etc.it could give rise strange things happening on hard cornering or braking.I would try to have the same tyre type on each axle.
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First check is to ensure both tyre sizes are exactly the same - you should have something like 205/70/r15 or whatever. If both of these are the same thats a start.If they are not, then its a worry!
If you have a normal tyre on one side and low profile on the other then it could lead to problems with handling.
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If you have inappropriate tyres fitted to your car, then simply saying "I don't know anything about tyres" will provide you with no defence. If you were to be pulled over by a Police patrol or into a VOSA checkpoint, YOU will be held responsible for the condition of YOUR car. As a licence holder you are duty bound to aquaint yourself with the basics - should this yield cause for concern then further (expert) advice should be sought.
Lecture over. Now some practical help:
'Strange' handling could also be down to worn shocks or bushes, perhaps even some kind of damage. Would probably be worth having this checked out by your dealer too. You don't say if this is a problem that has suddenly occured or has got gradually worse over time. A simple check for the shocks is to bounce each corner - the car should stop within one oscillation. If it does not, then that shock is shot. This is a very basic check and will not necessarily show up poor condition shocks. If your shocks have done 80k or more and you intend keeping the car, consider replacing them.
Have a look here: auto.howstuffworks.com/tire.htm
There's a section on sidewall markings and what they mean. Of special interest is the ability to interpret the size and construction of the tyre.
When you have boned up on this, you should check your vehicles handbook to find out what size tyres your car should have fitted. There may be several different options. Then go and note down what make, model, size and construction type you have fitted to each corner of the car. It is very unlikely the tyres are not of radial construction, so the make, model & size will be the main areas of interest.
Any car will perform best when all four tyres are the same, with similar tread depths all round. At the very least you should have the same size of tyre all round. Legally the tyres can be a different size front to rear, but must be the same on each axle. Your car, however, was designed to have the same size all around. If any of the tyres are different size to the rest, you should consult a dealer or tyre specialist to determine which ones are correct for the car and then replace the wrong one(s).
It is quite acceptable, legally, to have a different make on each corner. However, different makes (and different models of the same make) have different performance characteristics. If the two tyres on the front are both the same, but the tyres on the back are different to the fronts and each other then it is possible that this may upset the handling of the car. this may be especially true in tricky conditions, but is unlikely to be noticeable on the motorway. Since, in certain conditions, the cars stability is almost entirely dependant on the rear tyres then the best advice would be to put the best (same) tyres onto the back from the front. the two different tyres will then wear out quicker on the front and can be replaced sooner. If they are more than half worn and one is a 'normal' tyre and one a more 'sports' version (consult a tyre dealer to find out) then it might be best to bite the bullet and replace them. Replace them with tyres of a similar performance pedigree to those on the front.
If this doesn't help or you're still uneasy, then consult your dealer and consider replacing some or all the tyres according to their advice.
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Model, year and present tyres sizes fitted would be a good starting point. If they are all the same size check tyre pressures and report back with information. Regards Peter
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I'd a 1974 Mini with two different brands of tyre on the rear .
Nominally the same size. After I 'lost' the rear end I compared the tyres - the tread width and overall diameter were considerably different.Think the dodgy one was an India brand IIRC.
Fitted a new tyre to match the Michelin and problem solved.
I have never had noticeable adhesion/handling problems with different brands front/rear though.
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I wasna fu but just had plenty.
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