Asymmetric(al) is the spelling, for what it's worth.

Asymmetric (sometimes called non-directional) tyres usually have 'Outside' and 'Inside' stamped on the wall of the tyre.

This tells the tyre fitter which way the tyre must be fitted onto the wheel.

Once fitted correctly onto the wheel, that tyre/wheel can be legally fitted to any corner of the car.

 

Although most asymmetric tyres are non-directional, some are both asymmetric AND directional which will limit there fitment to a single side of a vehicle. The manufacturer will have two moulds to create tyres that are a mirror image of each other.

 

The Yokohama Advan Neova AD05/AD06 I mentioned earlier are a good example as per this picture:

Edited 23 June, 20169 yr by langers2k

I did indeed edit it because it did not link, i just wondered what you were on about with the 'did you mean this'

I meant was this what you were linking to, nothing more nothing less.

They are only dependent on the way they are mounted on the rim.

 

Incorrect fitting of both asymmetric and directional tyres is a reason for MOT failure.

Some high performance cars are fitted with directional and asymmetric tyres. These must be fitted the right way round on the wheel and on the correct side of the vehicle.

http://www.theaa.com/motoring_advice/safety/directional-and-asymmetric-tyres.html

 

Jim

This is some of the e-mail responses from black circles;

Thank you for your enquiry,

I can confirm, The LHD fitment is designed to compensate for road camber in left hand drive counties/vehicles and should only be fitted to left hand drive vehicle as this tyre may cause handling issues on a right hand drive vehicle.

I would only recommend to fit the RHD fitment for use on UK roads.

 

As previously advised, the LHD fitment is only designed for LHD vehicle and if used ok UK roads on a RHD vehicle there can be tyre wear issues and also tram lining issues which will cause the vehicle to handle incorrectly. As we supply tyres for all makes and model of vehicles we supply tyres for both right hand drive and left hand drive vehicles.

 

I am providing technical information which has been provided by Goodyear/Dunlop and if you wish to confirm the information I have given I would recommend speaking to Goodyear/Dunlop directly on 08453 453 453 option 3 to speak to their Technical team who will be more than happy to help.

Blackcircles.com is here to provide information to help our customer make the right choices for their vehicles, we check all our order for compatibility and fitment to ensure there is no issue occurred int he future, I apologise you feel you have been miss lead by the information I have given.

 

Thank you all for your helpful opinions.

It would be so very helpful and informative if you could say what tyres these are.

Brand / Type / Model & Size would be good.

 

cheers.

Yes, tyres specially manufactured for either RHD or LHD applications on certain cars do exist. The differences are in the construction of the tyre's carcass, not in the tread pattern. They are specified to assist straight line running when the car is driven on cambered roads (hence the different types for RHD and LHD cars).

 

Most tyres supplied to car manufacturers for original equipment (OE) fitment are made to specifications which meet the requirements for a particular model of car, and tyre manufacturers are involved in the testing and development stage of a new car model to ensure these requirements are satisfied. On some cars the correct tyre fitment is considered to be particularly important and tyres manufactured to the OE specification have an identifying mark to aid selection of tyres for replacement fit (the vehicle owner's handbook will usually refer to this). Application specific tyres have been around for many years (50+) and have become progressively more complex as the demands of car manufacturers become more rigorous.

 

I believe that RHD/LHD OE tyres were originally specified for a Japanese car model but this feature is likely to become more widespread in the future. 

Edited 24 June, 20169 yr by jefalad

Although most asymmetric tyres are non-directional, some are both asymmetric AND directional which will limit there fitment to a single side of a vehicle. The manufacturer will have two moulds to create tyres that are a mirror image of each other.

 

The Yokohama Advan Neova AD05/AD06 I mentioned earlier are a good example as per this picture:

tyres.JPG

Please see attachment.. 

Edited 24 June, 20169 yr by giandougl

Please see attachment.. 

 

Yes, that covers:

- Symmetric directional tyres

- Symmetric non-directional tyres

- Asymmetric non-directional tyres

 

It doesn't cover asymmetric directional tyres which can only be fitted to the left or right of a vehicle.

https://www.linkedin.com/pulse/symmetric-asymmetric-directional-tyreshow-do-i-choose-hessamaldin

Yes, that covers:

- Symmetric directional tyres

- Symmetric non-directional tyres

- Asymmetric non-directional tyres

 

It doesn't cover asymmetric directional tyres which can only be fitted to the left or right of a vehicle..

Just googled and found the 4th. type of tyre you quoted, where would I be be if not for Google and yourself..LOL

Edited 25 June, 20169 yr by giandougl