My i10 rear tyres are wearing fast . which part is responsible and needs repairing.

It should be possible to gain a rough idea of the problem from the tyre wear.

Choppy scalloped type wear suggests defective shocks or excessive wheel imbalance.

Wear of both shoulders or edges of a tyre or the centre of the tread indicates incorrect tyre pressures.

If both tyres are displaying a similar wear pattern on the same inside or outside shoulder indicates incorrect toe setting.

If one tyre has a shoulder that is wearing it indicates an incorrect camber angle.

If both tyres are wearing differently the problem is likely to be a combination.

The rear alignment of some cars is adjustable and slight misalignment can be corrected but often rectification comes down to replacing parts or even using a body jack to move mounting points.

I suggest you book your car in for a 4-wheel alignment check.

What car is it? Any adjustments on the rear end? Could a control arm be bent or twisted?

I would be checking out the wheel bearings for the problem. I would also be checking the front suspension for worn ball joints and steering end joints. Tyre wear patterns indicate unbalance-wheel alignment-shock absorbers and front end wear. I refuse to rotate tyres for several reasons Radial tyres when developing a wear pattern will retain that wear pattern even if placed on a trailer--Wear patterns show a fault for that wheel and tells which wheel and what needs to be done to repair it and lastly tyres wear in pairs so if you have a front wheel drive car why replace 4 tyres when the need is to replace only 2 front ones. Saves about 50% of the cost of tyres. The rotation theory came about from cross ply tyres and does not apply to radials except for tyre dealers profits

take the car to a suspension specialist shop and have the rear wheels aligned first
have the suspension checked for worn mounts or bad springs
it is very important that the rear end is aligned before the front end
suspect that the suspension rubbers need replacing as it is over 6 years old
the tyre rotation is a myth perpetrated on drivers to sell tyres
when the tyre construction was cross-ply and not radials yes rotation then on cross-ply tyres could get the wear to even out but with radials once the wear is started then the tyre continually wears in that pattern regardless of which wheel it is on
even if you take that tyre of the car and put it on a trailer , it will still continue to wear in that pattern
tyres are no longer rotated but simply put front to back on the same side other wise the belts flex in a new direction in the tread and fail earlier that expected
besides that fact that tyre rotation will not allow you to monitor for suspension problems or wheel alignment problems and cost you 4 tyres at a time instead of two

your camber (the vertical line down the tyres if look from directly behind it) is out. the tyres at the top are leaning into each other and causing the insides of your tyres to bear the brunt of the roads wear. this type of set up is good for grip while racing but as you see it eats them up quick if your not forever putting sideways force on them. the camber may have gone by taking a speed hump too fast, badly corrugated roads or pot holes at speed. take it into a tyre store and ask them to do a complete wheel and camber alignment to both axles. and ask them to check tyre balances too while your at it. even after a few ks uneven tyre wear quickly becomes out of balance. also go back to the store that sold you those tyres and ask them why they did not pick up this issue with your last set of tyres. because it does not sound like this issue happened Immeadiately after you installed fresh rubber.

out side edge wear usually means positive camber, dont know if rear camber is adjustable on your car. alignment specs arnt going to help you unless you have an aligment rack

Yes there is adjustment. You need to get the alignment checked out. It could be worn bushes and/or damage to the suspension linkages and struts.

your front end is need of a good inspection Re: ball joints & struts & bushes etc.
as all these may be worn & result in premature tyre wear also the tyre pressures may be wrong!
Cheers Rob

hi give me some details on how each tyre is wearing example inside wear on the drivers side rear wearing in the middle but in patchs ect and have you had a accident or hit a kerb gone down a pot hole ect as these are not adjustable yates210456

ok have you checked that the tyre pressure is the same on all four wheels or it could be that the rear axel is not being lubricated properly check the bushing.